ASTM B232/B232M-24

Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)

ABSTRACT
This specification covers concentric-lay-stranded aluminum conductors, coated-steel reinforced (ACSR), made from round aluminum 1350-H19 wires and round, coated steel core wire for use as overhead electrical conductors. ACSR covered by this specification has nine types of coated steel core wire which are designated by abbreviations as follows: ACSR/GA-ACSR, ACSR/GB-ACSR, ACSR/GC-ACSR, ACSR/MA-ACSR, ACSR/MB-ACSR, ACSR/MC-ACSR, ACSR/HS-ACSR, ACSR/MS-ACSR, and ACSR/AZ-ACSR. Before stranding, the aluminum wire and steel core wire shall meet the requirements prescribed. ACSR may be constructed using steel core wire with any one of nine types of protective coatings. The acceptable core wires are galvanized steel core wires, coating Classes A, B, or C ; high-strength galvanizes steel core wire; Zn-5Al-MM coated steel core wire; coating Classes A, B, or C ; aluminized steel core wire in accordance with the prescribed specifications. Tests for mechanical and electrical properties of zinc-coated, Zn-5Al-MM coated or aluminum coated steel wires shall be made before stranding. All aluminum wires composing the conductors shall be capable of meeting the bending property requirements after stranding.
SCOPE
1.1 This specification covers concentric-lay-stranded conductors made from round aluminum 1350-H19 (extra hard) wires and round, coated steel core wire(s) for use as overhead electrical conductors (Explanatory Note 1 and Explanatory Note 2).  
1.2 ACSR covered by this specification has nine types of coated steel core wire which are designated by abbreviations as follows (Explanatory Note 2):  
1.2.1 ACSR/GA or ACSR/GA2—ACSR using Class A zinc-coated steel wire,  
1.2.2 ACSR/GC or ACSR/GC2—ACSR using Class C zinc-coated steel wire,  
1.2.3 ACSR/MA or ACSR/MA2—ACSR using Class A Zn-5A1-MM coated steel wire,  
1.2.4 ACSR/HS or ACSR/GA3—ACSR using Class A zinc-coated high-strength steel wires,  
1.2.5 ACSR/MS or ACSR/MA3—ACSR using Class A Zn-5A1-MM coated high-strength steel wires,  
1.2.6 ACSR/GA4—ACSR using Class A zinc-coated extra-high-strength steel wires,  
1.2.7 ACSR/MA4—ACSR using Class A Zn-5A1-MM coated extra-high-strength steel wires,  
1.2.8 ACSR/GA5—ACSR using Class A zinc-coated ultra-high-strength steel wires,  
1.2.9 ACSR/MA5—ACSR using Class A Zn-5Al-MM coated ultra-high-strength steel wires.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Mar-2024
• ICS: 29.060.20 - Cables
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.07 - Conductors of Light Metals

Relations

• Replaces: ASTM B232/B232M-22 - Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)
• Effective Date: 01-Apr-2024
• Refers: ASTM B500/B500M-24 - Standard Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical Conductors
• Effective Date: 01-Apr-2024
• Refers: ASTM B500/B500M-22 - Standard Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical Conductors
• Effective Date: 01-May-2022
• Referred By: ASTM B1006-17(2023) - Standard Specification for Electrical Overhead Conductor Code Word Names
• Effective Date: 01-Apr-2024
• Referred By: ASTM B779-22 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Steel-Reinforced (ACSR/TW)
• Effective Date: 01-Apr-2024
• Referred By: ASTM B857-22 - Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW)
• Effective Date: 01-Apr-2024
• Referred By: ASTM B401-22 - Standard Specification for Compact Round Concentric-Lay-Stranded Aluminum Conductors, Steel-Reinforced (ACSR/COMP)
• Effective Date: 01-Apr-2024
• Referred By: ASTM B911/B911M-22 - Standard Specification for ACSR Twisted Pair Conductor (ACSR/TP)
• Effective Date: 01-Apr-2024
• Referred By: ASTM B701/B701M-22e1 - Standard Specification for Concentric-Lay-Stranded Self-Damping Aluminum Conductors, Steel Reinforced (ACSR/SD)
• Effective Date: 01-Apr-2024

Overview

ASTM B232/B232M-24 is the internationally recognized standard specification for concentric-lay-stranded aluminum conductors, coated-steel reinforced (ACSR). Issued by ASTM, this standard details the requirements for conductors made from round aluminum 1350-H19 wires and round, coated steel core wires, primarily used as overhead electrical conductors. The specification covers various types of steel core wires with different protective coatings, ranging from galvanized to zinc-aluminum-mischmetal alloy, designed to offer optimal strength and corrosion resistance in open-air installations.

Key Topics

• Conductor Types: The standard specifies nine ACSR types based on coatings and steel core properties, including Classes A and C zinc-coated, high-strength, extra-high-strength, and ultra-high-strength cores with different protective finishes.
• Material Requirements: All aluminum wires must meet ASTM B230/B230M requirements, and steel cores must comply with related ASTM specifications such as B498/B498M, B802/B802M, B957/B957M, and others.
• Design and Construction:
  • Detailed requirements for stranding, number, and diameter of wires.
  • Lay length and lay direction, typically right-hand unless otherwise specified.
  • No joints permitted in finished steel wires.
• Mechanical and Electrical Testing:
  • Tests for mechanical strength and resistivity of wires conducted before stranding.
  • All aluminum wires must retain specified bending properties after stranding.
  • Rated strength calculation based on aggregate values and standard factors for each composition.
• Packaging and Marking: Guidelines for packaging, reel sizes, single-length reels, and protection against shipment damage.

Applications

ASTM B232/B232M-24 ACSR conductors are widely used in:

• Overhead Power Transmission and Distribution: Favored for their high tensile strength, conductivity, and weather resistance, ACSR conductors are essential in long-span installations and demanding environmental conditions.
• Utilities and Infrastructure Projects: Electric utilities use ACSR conductors for new lines and maintenance, leveraging their strength-to-weight ratio.
• Ground Wires and Long-Span Construction: Designs with high mechanical strength are used as overhead ground wires, especially where long unsupported spans are required.
• Cross-Border and High-Voltage Installations: Due to adherence to international principles, the standard supports global projects and cross-compatibility in international infrastructure.

Related Standards

Several other standards are referenced in ASTM B232/B232M-24 for material and testing consistency:

• ASTM B230/B230M - Aluminum 1350–H19 Wire for Electrical Purposes
• ASTM B263/B263M - Cross-sectional area determination
• ASTM B498/B498M - Zinc-Coated (Galvanized) Steel Core Wire
• ASTM B606/B606M - High-Strength Galvanized Steel Core Wire
• ASTM B802/B802M - Zn-5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire
• ASTM B957/B957M - Extra/Ultra-High-Strength Galvanized Steel Core Wire
• ASTM B958/B958M - Extra/Ultra-High-Strength Zn-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire
• ANSI H35.1/ANSI H35.1M - Alloy and Temper Designations for Aluminum
• NIST Handbook 100 - Copper Wire Tables

Practical Value

ASTM B232/B232M-24 ensures that ACSR conductors provide reliable mechanical strength, electrical performance, and corrosion resistance, supporting the growing demands of modern power delivery systems. This standard is essential for specifying, purchasing, and installing overhead power line conductors that meet both national and international quality expectations.

Keywords: ASTM B232/B232M-24, ACSR, overhead electrical conductors, aluminum conductors, steel reinforced, concentric-lay-stranded, galvanized steel core, transmission lines, utility standards, ASTM standards.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: B232/B232M − 24
Standard Specification for
Concentric-Lay-Stranded Aluminum Conductors, Coated-
Steel Reinforced (ACSR)
This standard is issued under the fixed designation B232/B232M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.1 This specification covers concentric-lay-stranded con-
mine the applicability of regulatory limitations prior to use.
ductors made from round aluminum 1350-H19 (extra hard)
1.5 This international standard was developed in accor-
wires and round, coated steel core wire(s) for use as overhead
dance with internationally recognized principles on standard-
electrical conductors (Explanatory Note 1 and Explanatory
ization established in the Decision on Principles for the
Note 2).
Development of International Standards, Guides and Recom-
1.2 ACSR covered by this specification has nine types of
mendations issued by the World Trade Organization Technical
coated steel core wire which are designated by abbreviations as
Barriers to Trade (TBT) Committee.
follows (Explanatory Note 2):
1.2.1 ACSR/GA or ACSR/GA2—ACSR using Class A zinc-
2. Referenced Documents
coated steel wire,
2.1 The following documents of the issue in effect on date
1.2.2 ACSR/GC or ACSR/GC2—ACSR using Class C zinc-
of material purchase form a part of this specification to the
coated steel wire,
extent referenced herein:
1.2.3 ACSR/MA or ACSR/MA2—ACSR using Class A Zn-
2.2 ASTM Standards:
5A1-MM coated steel wire,
B230/B230M Specification for Aluminum 1350–H19 Wire
1.2.4 ACSR/HS or ACSR/GA3—ACSR using Class A zinc-
for Electrical Purposes
coated high-strength steel wires,
B263/B263M Test Method for Determination of Cross-
1.2.5 ACSR/MS or ACSR/MA3—ACSR using Class A Zn-
Sectional Area of Stranded Conductors
5A1-MM coated high-strength steel wires,
B354 Terminology Relating to Uninsulated Metallic Electri-
1.2.6 ACSR/GA4—ACSR using Class A zinc-coated extra-
cal Conductors
high-strength steel wires,
B498/B498M Specification for Zinc-Coated (Galvanized)
1.2.7 ACSR/MA4—ACSR using Class A Zn-5A1-MM
Steel Core Wire for Use in Overhead Electrical Conduc-
coated extra-high-strength steel wires,
tors
1.2.8 ACSR/GA5—ACSR using Class A zinc-coated ultra-
B500/B500M Specification for Metallic Coated or Alumi-
high-strength steel wires,
num Clad Stranded Steel Core for Use in Overhead
1.2.9 ACSR/MA5—ACSR using Class A Zn-5Al-MM coated
Electrical Conductors
ultra-high-strength steel wires.
B606/B606M Specification for High-Strength Zinc-Coated
1.3 The values stated in either SI units or inch-pound units
(Galvanized) Steel Core Wire for Use in Overhead Elec-
are to be regarded separately as standard. The values stated in
trical Conductors
each system may not be exact equivalents; therefore, each
B802/B802M Specification for Zinc–5 % Aluminum-
system shall be used independently of the other. Combining
Mischmetal Alloy-Coated Steel Core Wire for Use in
values from the two systems may result in non-conformance
Overhead Electrical Conductors
with the standard.
B803/B803M Specification for High-Strength Zinc–5 %
1.4 This standard does not purport to address all of the
Aluminum-Mischmetal Alloy-Coated Steel Core Wire for
safety concerns, if any, associated with its use. It is the
Use in Overhead Electrical Conductors
B957/B957M Specification for Extra-High-Strength and
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
Conductors of Light Metals. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2024. Published March 2024. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1948. Last previous edition approved in 2022 as B232/B232M – 22. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/B0232_B0232M-24. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B232/B232M − 24
Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core 3.2.10 ACSR/MA5—reinforced with ultra-high-strength Zn-
Wire for Use in Overhead Electrical Conductors 5A1-MM coated steel core wire in accordance with Specifica-
B958/B958M Specification for Extra-High-Strength and tion B958/B958M.
Ultra-High-Strength Class A Zinc–5% Aluminum-
3.2.11 ACSR/GA5—reinforced with ultra-high-strength gal-
Mischmetal Alloy-Coated Steel Core Wire for Use in
vanized steel core wire in accordance with Specification
Overhead Electrical Conductors
B957/B957M.
E29 Practice for Using Significant Digits in Test Data to
4. Classification
Determine Conformance with Specifications
E527 Practice for Numbering Metals and Alloys in the
4.1 For the purpose of this specification conductors are
Unified Numbering System (UNS)
classified as follows (Explanatory Notes 1 and 2):
2.3 ANSI Documents: 4.1.1 Class AA—For bare conductors usually used in over-
head lines. These conductors are divided into two types as
ANSI H35.1 American National Standard Alloy and Temper
Designation Systems for Aluminum follows:
4.1.1.1 Conductors used for regular over-head line
ANSI H35.1M American National Standard for Alloy and
Temper Designations Systems for Aluminum [Metric] construction, and
4.1.1.2 Conductors having a high ratio of mechanical
2.4 NIST Document:
strength to current-carrying capacity used for overhead ground
NBS Handbook 100—Copper Wire Tables
wires and for extra-long span construction. These are denoted
2.5 Aluminum Association Document:
under the Class column in Table 1 and Table 2 as “(HS)” for
Publication 50, Code Words for Overhead Aluminum Elec-
High Strength.
trical Conductors
4.1.2 Class A—For conductors to be covered with weather-
resistant materials.
3. Terminology
5. Ordering Information
3.1 Definitions:
3.1.1 galvanized, adj—zinc coated. 5.1 Orders for material under this specification shall include
the following information:
3.2 Abbreviations:
5.1.1 Quantity of each size, stranding, and class,
3.2.1 Zn-5A1-MM—zinc-5 % aluminum-mischmetal alloy.
5.1.2 Conductor size, circular-mil area or AWG (Section 9
3.2.2 ACSR—aluminum conductor, steel reinforced.
and Table 1),
3.2.3 ACSR/GA or ACSR/GA2—reinforced with galvanized
5.1.3 Number of wires, aluminum and steel (see Tables 1-5),
steel core wire, coating Class A in accordance with Specifica-
5.1.4 Type of steel core wire and type and area density (if
tion B498/B498M.
applicable) of coating (see 6.2),
5.1.5 Direction of lay of outer layer of aluminum wires if
3.2.4 ACSR/GC or ACSR/GC2—reinforced with galvanized
other than right-hand (see 8.3),
steel core wire, coating Class C in accordance with Specifica-
5.1.6 Special tension test, if desired (see 15.3),
tion B498/B498M.
5.1.7 Place of inspection (Section 16),
3.2.5 ACSR/HS or ACSR/GA3—reinforced with high-
5.1.8 Package size and type (see 17.1),
strength galvanized steel core wire in accordance with Speci-
5.1.9 Heavy wood lagging, if required (see 17.3), and
fication B606/B606M.
5.1.10 Special package marking, if required (see 17.4).
3.2.6 ACSR/MA or ACSR/MA2—reinforced with Zn-
6. Requirement for Wires
5A1-MM coated steel core wire, coating Class A in accordance
with Specification B802/B802M.
6.1 Before stranding, the aluminum wire used shall meet the
3.2.7 ACSR/MS or ACSR/MA3—reinforced with high- requirements of Specification B230/B230M.
strength Zn-5A1-MM coated steel core wire in accordance
6.2 Before stranding, the steel core wire used shall meet the
with Specification B803/B803M.
requirements of Specification B498/B498M, B606/B606M,
3.2.8 ACSR//MA4—reinforced with extra-high-strength Zn-
B802/B802M, B803/B803M, B957/B957M, or B958/B958M,
5A1-MM coated steel core wire in accordance with Specifica-
whichever is applicable.
tion B958/B958M.
7. Joints
3.2.9 ACSR/GA4—reinforced with extra-high-strength gal-
7.1 Electric-butt welds, cold-pressure welds, and electric-
vanized steel core wire in accordance with Specification
butt, cold-upset welds in the finished individual aluminum
B957/B957M.
wires composing the conductor may be made during the
stranding process. No weld shall occur within 50 ft [15 m] of
a weld in the same wire or in any other wire of the completed
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
conductor (Explanatory Note 3).
4th Floor, New York, NY 10036, http://www.ansi.org.
Available from National Institute of Standards and Technology (NIST), 100
7.2 There shall be no joints of any kind made in the finished
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
zinc-coated or zinc-5% aluminum-mischmetal alloy coated
Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,
Arlington, VA 22209, http://www.aluminum.org. steel wires.
B232/B232M − 24
TABLE 1 Construction Requirements of Aluminum Conductors, Steel Reinforced (ACSR)
Stranding
Stranding Nominal
Size
Code Design Aluminum Wires Steel Wires O.D. of Mass,
Class
A
Words Aluminum/ Conductors, lb/1000 ft
Diameter, Diameter,
cmil AWG Number Layers Number Layers
Steel in.
in. in.
2 312 000 . . . Thrasher AA 76/19 76 0.1744 4 19 0.0814 2 1.802 2523
2 167 000 . . . Kiwi AA 72/7 72 0.1735 4 7 0.1157 1 1.735 2301
2 156 000 . . . Bluebird AA 84/19 84 0.1602 4 19 0.0961 2 1.762 2508
1 780 000 . . . Chukar AA 84/19 84 0.1456 4 19 0.0874 2 1.602 2072
1 590 000 . . . Falcon AA 54/19 54 0.1716 3 19 0.1030 2 1.545 2042
1 590 000 . . . Lapwing AA 45/7 45 0.1880 3 7 0.1253 1 1.504 1790
1 510 500 . . . Parrot AA 54/19 54 0.1672 3 19 0.1003 2 1.505 1938
1 510 500 . . . Nuthatch AA 45/7 45 0.1832 3 7 0.1221 1 1.466 1700
1 431 000 . . . Plover AA 54/19 54 0.1628 3 19 0.0977 2 1.465 1838
1 431 000 . . . Bobolink AA 45/7 45 0.1783 3 7 0.1189 1 1.427 1611
1 351 500 . . . Martin AA 54/19 54 0.1582 3 19 0.0949 2 1.424 1735
1 351 500 . . . Dipper AA 45/7 45 0.1733 3 7 0.1155 1 1.386 1521
1 272 000 . . . Pheasant AA 54/19 54 0.1535 3 19 0.0921 2 1.382 1634
1 272 000 . . . Bittern AA 45/7 45 0.1681 3 7 0.1121 1 1.345 1432
1 272 000 . . . Skylark AA 36/1 36 0.1880 3 1 0.1880 0 1.316 1286
1 192 500 . . . Grackle AA 54/19 54 0.1486 3 19 0.0892 2 1.338 1531
1 192 500 . . . Bunting AA 45/7 45 0.1628 3 7 0.1085 1 1.302 1342
1 113 000 . . . Finch AA 54/19 54 0.1436 3 19 0.0862 2 1.293 1430
1 113 000 . . . Bluejay AA 45/7 45 0.1573 3 7 0.1049 1 1.259 1254
1 033 500 . . . Curlew AA 54/7 54 0.1383 3 7 0.1383 1 1.245 1329
1 033 500 . . . Ortolan AA 45/7 45 0.1515 3 7 0.1010 1 1.212 1163
1 033 500 . . . Tanager AA 36/1 36 0.1694 3 1 0.1694 0 1.186 1044
954 000 . . . Cardinal AA 54/7 54 0.1329 3 7 0.1329 1 1.196 1227.1
954 000 . . . Rail AA 45/7 45 0.1456 3 7 0.0971 1 1.165 1074
954 000 . . . Catbird AA 36/1 36 0.1628 3 1 0.1628 0 1.140 964
900 000 . . . Canary AA 54/7 54 0.1291 3 7 0.1291 1 1.162 1158
900 000 . . . Ruddy AA 45/7 45 0.1414 3 7 0.0943 1 1.131 1013
795 000 . . . Mallard AA 30/19 30 0.1628 2 19 0.0977 2 1.140 1233.9
795 000 . . . Condor AA 54/7 54 0.1213 3 7 0.1213 1 1.092 1022
795 000 . . . Tern AA 45/7 45 0.1329 3 7 0.0886 1 1.063 895
795 000 . . . Drake AA 26/7 26 0.1749 2 7 0.1360 1 1.108 1093
795 000 . . . Cuckoo AA 24/7 24 0.1820 2 7 0.1213 1 1.092 1023
795 000 . . . Coot AA 36/1 36 0.1486 3 1 0.1486 0 1.040 803.6
715 500 . . . Redwing AA 30/19 30 0.1544 2 19 0.0926 2 1.081 1109.3
715 500 . . . Starling AA 26/7 26 0.1659 2 7 0.1290 1 1.051 983.7
715 500 . . . Stilt AA 24/7 24 0.1727 2 7 0.1151 1 1.036 921
666 600 . . . Gannet AA 26/7 26 0.1601 2 7 0.1245 1 1.014 916.2
666 600 . . . Flamingo AA 24/7 24 0.1667 2 7 0.1111 1 1.000 857.9
636 000 . . . Egret AA 30/19 30 0.1456 2 19 0.0874 2 1.019 987.2
636 000 . . . Scoter AA 30/7 30 0.1456 2 7 0.1456 1 1.019 995.1
636 000 . . . Grosbeak AA 26/7 26 0.1564 2 7 0.1216 1 0.990 874.2
636 000 . . . Rook AA 24/7 24 0.1628 2 7 0.1085 1 0.977 818.2
636 000 . . . Swift AA 36/1 36 0.1329 3 1 0.1329 0 0.930 642.8
636 000 . . . Kingbird AA 18/1 18 0.1880 2 1 0.1880 0 0.940 689.9
605 000 . . . Teal AA 30/19 30 0.1420 2 19 0.0852 2 0.994 938.6
605 000 . . . Wood Duck AA 30/7 30 0.1420 2 7 0.1420 1 0.994 946.5
605 000 . . . Squab AA 26/7 26 0.1525 2 7 0.1186 1 0.966 831.3
605 000 . . . Peacock AA 24/7 24 0.1588 2 7 0.1059 1 0.953 778.8
556 500 . . . Eagle AA 30/7 30 0.1362 2 7 0.1362 1 0.953 870.7
556 500 . . . Dove AA 26/7 26 0.1463 2 7 0.1138 1 0.927 765.2
556 500 . . . Parakeet AA 24/7 24 0.1523 2 7 0.1015 1 0.914 716.1
556 500 . . . Osprey AA 18/1 18 0.1758 2 1 0.1758 0 0.879 603.3
477 000 . . . Hen AA 30/7 30 0.1261 2 7 0.1261 1 0.883 746.4
477 000 . . . Hawk AA 26/7 26 0.1354 2 7 0.1053 1 0.858 655.3
477 000 . . . Flicker AA 24/7 24 0.1410 2 7 0.0940 1 0.846 613.9
477 000 . . . Pelican AA 18/1 18 0.1628 2 1 0.1628 0 0.814 517.3
397 500 . . . Lark AA 30/7 30 0.1151 2 7 0.1151 1 0.806 621.8
397 500 . . . Ibis AA 26/7 26 0.1236 2 7 0.0961 1 0.783 546.0
397 500 . . . Brant AA 24/7 24 0.1287 2 7 0.0858 1 0.772 511.4
397 500 . . . Chickadee AA 18/1 18 0.1486 2 1 0.1486 0 0.743 431.0
336 400 . . . Oriole AA 30/7 30 0.1059 2 7 0.1059 1 0.741 526.4
336 400 . . . Linnet AA 26/7 26 0.1137 2 7 0.0884 1 0.720 462.0
336 400 . . . Merlin AA 18/1 18 0.1367 2 1 0.1367 0 0.684 364.8
300 000 . . . Ostrich AA 26/7 26 0.1074 2 7 0.0835 1 0.680 412.2
266 800 . . . Partridge AA 26/7 26 0.1013 2 7 0.0788 1 0.642 366.9
266 800 . . . Waxwing AA 18/1 18 0.1217 2 1 0.1217 0 0.609 289.1
211 600 0000 Penguin AA, A 6/1 6 0.1878 1 1 0.1878 0 0.563 290.8
211 300 . . . Cochin AA (HS) 12/7 12 0.1327 1 7 0.1327 1 0.664 526.8
203 200 . . . Brahma AA (HS) 16/19 16 0.1127 1 19 0.0977 2 0.714 674.6
190 800 . . . Dorking AA (HS) 12/7 12 0.1261 1 7 0.1261 1 0.631 475.7
176 900 . . . Dotterel AA (HS) 12/7 12 0.1214 1 7 0.1214 1 0.607 440.9
B232/B232M − 24
TABLE 1 Continued
Stranding
Stranding Nominal
Size
Code Design Aluminum Wires Steel Wires O.D. of Mass,
Class
A
Words Aluminum/ Conductors, lb/1000 ft
Diameter, Diameter,
cmil AWG Number Layers Number Layers
Steel in.
in. in.
167 800 000 Pigeon AA, A 6/1 6 0.1672 1 1 0.1672 0 0.502 230.5
159 000 . . . Guinea AA (HS) 12/7 12 0.1151 1 7 0.1151 1 0.576 396.3
134 600 . . . Leghorn AA (HS) 12/7 12 0.1059 1 7 0.1059 1 0.530 335.5
133 100 00 Quail AA, A 6/1 6 0.1489 1 1 0.1489 0 0.447 182.8
110 800 . . . Minorca AA (HS) 12/7 12 0.0961 1 7 0.0961 1 0.481 276.3
105 600 0 Raven AA, A 6/1 6 0.1327 1 1 0.1327 0 0.398 145.2
101 800 . . . Petrel AA (HS) 12/7 12 0.0921 1 7 0.0921 1 0.461 253.8
83 690 1 Robin AA, A 6/1 6 0.1181 1 1 0.1181 0 0.354 115.0
80 000 . . . Grouse AA (HS) 8/1 8 0.1000 1 1 0.1670 0 0.367 148.8
66 360 2 Sparate AA, A 7/1 7 0.0974 1 1 0.1299 0 0.325 106.63
66 360 2 Sparrow AA, A 6/1 6 0.1052 1 1 0.1052 0 0.316 91.2
41 740 4 Swanate AA, A 7/1 7 0.0772 1 1 0.1029 0 0.257 66.95
41 740 4 Swan AA, A 6/1 6 0.0834 1 1 0.0834 0 0.250 57.35
33 090 5 . . . A 6/1 6 0.0743 1 1 0.0743 0 0.223 45.51
26 240 6 Turkey AA, A 6/1 6 0.0661 1 1 0.0661 0 0.198 36.02
A
Code words shown are provided here for information only. These code names apply to Class AA Bare Aluminum Conductors, Steel Reinforced (ACSR) as shown above.
They do not apply to Class A products shown in the above table.
Conversion factors:
1 cmil = 5.067 E – 4 mm
1 in. = 25.4 mm
1 lb/1000ft = 1.4882 kg/km
1 ft = 0.3048 m
1 kip = 1000 lbf = 4.448 kN
8. Lay 9.1.7 Ultra-high-strength galvanized steel core wire coating
Class A in accordance with Specification B957/B957M; or
8.1 The length of lay of the various layers of aluminum
9.1.8 Ultra-high-strength Zn-5Al-MM coated steel core
wires in a conductor shall conform to Table 5 (see Explanatory
wire, coating Class A in accordance with Specification B958/
Note 4).
B958M.
8.2 The length of lay of the various layers of steel wire shall
9.2 The number and diameter of aluminum and steel wires
conform to the requirements of B500/B500M.
and the area of cross section of aluminum wires shall conform
8.3 The direction of lay of the outside layer of aluminum
to the requirements prescribed in Tables 1-5.
wires shall be right hand unless otherwise specified in the
purchaser order. The direction of lay of the aluminum and steel 9.3 Where compressed stranding is required in order to
wires shall be reversed in successive layers.
insulate the conductor properly, one or more aluminum layers
of any stranded conductor consisting of 7 wires or more may be
8.4 In a conductor having multiple layers of aluminum
slightly compressed. The nominal diameter of the compressed
wires, the length of lay of any aluminum layer shall not be less
conductor is 3 % below the nominal diameter of noncom-
than the length of lay of the aluminum layer immediately
pressed conductor and the area of cross section after compress-
beneath it.
ing is in accordance with Section 13.
9. Construction
9.4 For “HS” (High Strength) type conductors as denoted in
9.1 ACSR may be constructed using steel core wire with any
Table 1 and Table 2, unless specified by the customer, the
one of two types of protective coatings. The acceptable core
default strength of steel shall be regular strength Type GA2 to
wires are:
Specification B498/B498M or MA2 to Specification B802/
9.1.1 Galvanized steel core wires, with coating Classes A or
B802M.
C in accordance with Specification B498/B498M;
9.5 All steel wires shall lie naturally in their position in the
9.1.2 High-strength galvanized steel core wire, coating
stranded core, and where the core is cut, the wire ends shall
Class A in accordance with Specification B606/B606M;
remain in position or be readily replaced by hand and then
9.1.3 Zn-5A1-MM coated steel core wire, coating Class A,
remain approximately in position. This requirement also ap-
in accordance with Specification B802/B802M;
plies to the outer layer of aluminum wires of a conductor.
9.1.4 High-strength Zn-5A1-MM coated steel core wire,
coating Class A in accordance with Specification B803/
9.6 The stranded steel core shall be free from waviness and
B803M; kinks.
9.1.5 Extra-high-strength galvanized steel core wire coating
9.7 Before stranding, aluminum and steel wires shall have
Class A in accordance with Specification B957/B957M;
approximately uniform temperatures.
9.1.6 Extra-high-strength Zn-5Al-MM coated steel core
wire, coating Class A in accordance with Specification B958/ 9.8 The diameter of the finished conductor shall be not less
B958M; than 99 % nor more than 101 % of that shown in Table 1 and
B232/B232M − 24
TABLE 2 Construction Requirements—Aluminum Conductors, Steel Reinforced (ACSR)
Stranding Nominal
Outside
Size, Stranding Aluminum Wires Steel Wires Mass,
Class Diameter of
mm Design kg/km
Diameter, Diameter, Conductors,
Number Layers Number Layers
mm mm
mm
1250 AA 84/19 84 4.35 4 19 2.61 2 47.85 4274
1250 AA 76/19 76 4.58 4 19 2.14 2 47.34 4023
1250 AA 72/7 72 4.70 4 7 3.13 1 46.99 3901
1120 AA 84/19 84 4.12 4 19 2.47 2 45.31 3833
1120 AA 76/19 76 4.33 4 19 2.02 2 44.74 3595
1120 AA 72/7 72 4.45 4 7 2.97 1 44.51 3499
1000 AA 84/19 84 3.89 4 19 2.33 2 42.77 3416
1000 AA 72/7 72 4.21 4 7 2.81 1 42.11 3132
900 AA 84/19 84 3.69 4 19 2.21 2 40.57 3073
900 AA 72/7 72 3.99 4 7 2.66 1 39.9 2812
800 AA 54/19 54 4.34 3 19 2.60 2 39.04 3015
800 AA 45/7 45 4.76 3 7 3.17 1 38.07 2652
710 AA 54/19 54 4.09 3 19 2.45 2 36.79 2678
710 AA 45/7 45 4.48 3 7 2.99 1 35.85 2351
630 AA 54/19 54 3.85 3 19 2.31 2 34.65 2375
630 AA 45/7 45 4.22 3 7 2.81 1 33.75 2084
560 AA 54/19 54 3.63 3 19 2.18 2 32.68 2112
560 AA 45/7 45 3.98 3 7 2.65 1 31.83 1854
500 AA 54/7 54 3.43 3 7 3.43 1 30.87 1889
500 AA 45/7 45 3.76 3 7 2.51 1 30.09 1656
450 AA 54/7 54 3.26 3 7 3.26 1 29.34 1706
450 AA 45/7 45 3.57 3 7 2.38 1 28.56 1492
400 AA 30/19 30 4.12 2 19 2.47 2 28.83 1824
400 AA 26/7 26 4.43 2 7 3.45 1 28.07 1622
400 AA 24/7 24 4.61 2 7 3.07 1 27.65 1515
355 AA 30/19 30 3.88 2 19 2.33 2 27.17 1620
355 AA 26/7 26 4.17 2 7 3.24 1 26.4 1435
355 AA 24/7 24 4.34 2 7 2.89 1 26.03 1343
315 AA 30/19 30 3.66 2 19 2.20 2 25.64 1443
315 AA 26/7 26 3.93 2 7 3.06 1 24.9 1277
315 AA 24/7 24 4.09 2 7 2.73 1 24.55 1194
315 AA 18/1 18 4.72 2 1 4.72 0 23.6 1014
280 AA 30/7 30 3.45 2 7 3.45 1 24.15 1291
280 AA 26/7 26 3.70 2 7 2.88 1 23.44 1131
280 AA 24/7 24 3.85 2 7 2.57 1 23.11 1058
280 AA 18/1 18 4.45 2 1 4.45 0 22.25 901.0
250 AA 30/7 30 3.26 2 7 3.26 1 22.82 1152
250 AA 26/7 26 3.50 2 7 2.72 1 22.16 1011
250 AA 24/7 24 3.64 2 7 2.43 1 21.85 946.0
250 AA 18/1 18 4.21 2 1 4.21 0 21.05 806.4
224 AA 30/7 30 3.08 2 7 3.08 1 21.56 1029
224 AA 26/7 26 3.31 2 7 2.57 1 20.95 904.0
224 AA 24/7 24 3.45 2 7 2.30 1 20.7 849.2
224 AA 18/1 18 3.98 2 1 3.98 0 19.9 720.7
200 AA 30/7 30 2.91 2 7 2.91 1 20.37 918.2
200 AA 26/7 26 3.13 2 7 2.43 1 19.81 808.3
200 AA 24/7 24 3.26 2 7 2.17 1 19.55 757.6
200 AA 18/1 18 3.76 2 1 3.76 0 18.8 643.2
180 AA 30/7 30 2.76 2 7 2.76 1 19.32 826.0
180 AA 26/7 26 2.97 2 7 2.31 1 18.81 728.6
180 AA 24/7 24 3.09 2 7 2.06 1 18.54 681.2
180 AA 18/1 18 3.57 2 1 3.57 0 17.85 579.9
160 AA 30/7 30 2.61 2 7 2.61 1 18.27 738.6
160 AA 26/7 26 2.80 2 7 2.18 1 17.74 648.0
160 AA 24/7 24 2.91 2 7 1.94 1 17.46 604.2
160 AA 18/1 18 3.36 2 1 3.36 0 16.8 513.7
140 AA 26/7 26 2.62 2 7 2.04 1 16.6 567.4
140 AA 24/7 24 2.73 2 7 1.82 1 16.38 531.8
B232/B232M − 24
TABLE 2 Continued
Nominal
Stranding
Outside
Size, Stranding Aluminum Wires Steel Wires Mass,
Class Diameter of
mm Design kg/km
Diameter, Diameter,
Conductors,
Number Layers Number Layers
mm mm mm
140 AA 18/1 18 3.15 2 1 3.15 0 15.75 451.5
125 AA 26/7 26 2.47 2 7 1.92 1 15.64 503.7
125 AA 24/7 24 2.58 2 7 1.72 1 15.48 474.9
125 AA 18/1 18 2.97 2 1 2.97 0 14.85 401.3
100 AA (HS) 16/19 16 2.82 1 19 2.44 2 17.84 972.4
100 AA (HS) 12/7 12 3.26 1 7 3.26 1 16.3 734.1
100 AA, A 6/1 6 4.61 1 1 4.61 0 13.83 404.8
90 AA (HS) 12/7 12 3.09 1 7 3.09 1 15.45 659.5
80 AA (HS) 12/7 12 2.91 1 7 2.91 1 14.55 584.9
80 AA, A 6/1 6 4.12 1 1 4.12 0 12.36 323.3
71 AA (HS) 12/7 12 2.74 1 7 2.74 1 13.7 518.6
63 AA (HS) 12/7 12 2.59 1 7 2.59 1 12.95 463.4
63 AA, A 6/1 6 3.66 1 1 3.66 0 10.98 255.2
56 AA (HS) 12/7 12 2.44 1 7 2.44 1 12.2 411.2
50 AA (HS) 12/7 12 2.30 1 7 2.30 1 11.5 365.4
50 AA, A 6/1 6 3.26 1 1 3.26 0 9.78 202.4
40 AA (HS) 8/1 8 2.52 1 1 4.20 0 9.24 217.9
40 AA, A 6/1 6 2.91 1 1 2.91 0 8.73 161.3
31.5 AA, A 7/1 7 2.39 1 1 3.19 0 7.97 148.4
31.5 AA, A 6/1 6 2.59 1 1 2.59 0 7.77 127.8
25 AA, A 7/1 7 2.13 1 1 2.84 0 7.1 117.8
25 AA, A 6/1 6 2.30 1 1 2.30 0 6.9 100.8
20 AA, A 7/1 7 1.91 1 1 2.55 0 6.37 94.80
20 AA, A 6/1 6 2.06 1 1 2.06 0 6.18 80.83
16 AA, A 6/1 6 1.84 1 1 1.84 0 5.52 64.49
12.5 AA, A 6/1 6 1.63 1 1 1.63 0 4.89 50.61
Table 2 when measured with a diameter tape between the 11. Density
closing die(s) and the capstan of the strander.
11.1 For the purpose of calculating mass per unit length,
cross sections, etc., the density of aluminum 1350 shall be
10. Rated Strength of Conductor
taken from Specification B230/B230M.
10.1 The rated strength of a completed conductor shall be
11.2 For the purpose of calculating mass per unit length,
taken as the aggregate strength of the aluminum and steel
cross sections, etc., the density of galvanized or Zn-5A1-MM
components, calculated as follows. The strength contribution
coated steel wire shall be taken from the applicable ASTM wire
of the aluminum wires shall be taken as the percentage,
specification: B498/B498M, B606/B606M, B802/B802M,
indicated in Table 6, of the sum of the strengths of the
B803/B803M, B957/B957M, or B958/B958M.
1350-H19 wires, calculated from their specified nominal wire
diameter and the appropriate specified minimum average
12. Mass Per Unit Length and Electrical Resistance
tensile strength given in Specification B230/B230M. The
12.1 The mass per unit length and electrical resistance of a
strength contribution of the steel core wires shall be taken as
unit length of stranded conductor are a function of the length of
the percentage, according to the number of layers of steel
lay. The approximate mass and electrical resistance may be
wires, indicated in Table 6, of the sum of the strengths of the
determined using the standard increments shown in Table 6.
steel wires, calculated from their specified nominal wire
When greater accuracy is desired, the increment based on the
diameter and the appropriate specified minimum stress at 1 %
specific lay of the conductor may be calculated (Explanatory
extension given in Specification B498/B498M, B606/B606M,
Note 5).
B802/B802M, B803/B803M, B957/B957M, or B958/B958M,
12.2 In the calculation of the electrical resistance of a
whichever is applicable.
conductor, the zinc-coated or Zn-5A1-MM coated steel core
10.2 Rated strength and breaking strength values shall be
wires may be included.
rounded to three significant figures, in the final value only, in
accordance with the rounding method of Practice E29.
13. Variation in Area
10.3 Rated strength of various constructions are given in 13.1 The area of cross section of the aluminum wires of a
Table 3 or Table 4. conductor shall be not less than 98 % of the area specified.
B232/B232M − 24
A
TABLE 3 Rated Strength Aluminum Conductors, Steel Reinforced (ACSR)
Size
Stranding Design
ACSR/GA2 ACSR/GA3 ACSR/GA4 ACSR/GA5,
Class
ACSR/GC2
Aluminum/Steel
cmil AWG ACSR/MA2, ACSR/MA3, ACSR/MA4, ACSR/MA5,
kips
kips kips kips kips
2 312 000 . . . AA 76/19 56.7 54.8 58.5 59.9 60.4
2 167 000 . . . AA 72/7 49.8 48.4 51.3 52.3 52.7
2 156 000 . . . AA 84/19 60.3 57.7 62.8 64.8 65.4
1 780 000 . . . AA 84/19 51.0 48.9 53.1 54.7 55.2
1 590 000 . . . AA 54/19 54.5 51.6 57.5 59.7 60.4
1 590 000 . . . AA 45/7 42.2 40.5 43.9 45.1 45.5
1 510 000 . . . AA 54/19 51.7 48.9 54.5 56.6 57.3
1 510 000 . . . AA 45/7 40.1 38.5 41.6 42.8 43.2
1 431 000 . . . AA 54/19 49.1 46.4 51.7 53.7 54.4
1 431 000 . . . AA 45/7 38.3 36.9 39.8 41.0 41.3
1 351 000 . . . AA 54/19 46.3 43.8 48.8 50.7 51.3
1 351 000 . . . AA 45/7 36.2 34.8 37.6 38.7 39
1 272 000 . . . AA 54/19 43.6 41.2 46.0 47.7 48.3
1 272 000 . . . AA 45/7 34.1 32.8 35.4 36.4 36.7
1 272 000 . . . AA 36/1 26.4 26.0 27.0 27.4 27.6
1 192 500 . . . AA 54/19 41.9 39.7 44.1 45.7 46.3
1 192 500 . . . AA 45/7 32.0 30.7 33.2 34.1 34.4
1 113 000 . . . AA 54/19 39.1 37.0 41.2 42.7 43.2
1 113 000 . . . AA 45/7 29.8 28.7 31.0 31.9 32.2
1 033 500 . . . AA 54/7 36.6 34.6 38.6 40.2 40.7
1 033 500 . . . AA 45/7 27.7 26.6 28.8 29.6 29.8
1 033 500 . . . AA 36/1 21.4 21.1 21.9 22.3 22.4
954 000 . . . AA 54/7 33.8 32.0 35.7 37.1 37.6
954 000 . . . AA 45/7 25.9 24.9 26.9 27.7 27.9
954 000 . . . AA 36/1 19.8 19.5 20.3 20.6 20.7
900 000 . . . AA 54/7 31.9 30.2 33.7 35.0 35.4
900 000 . . . AA 45/7 24.4 23.5 25.4 26.1 26.3
795 000 . . . AA 30/19 38.4 35.8 41.1 43.1 43.7
795 000 . . . AA 54/7 28.2 26.6 29.7 30.9 31.3
795 000 . . . AA 45/7 22.1 21.2 22.9 23.5 23.7
795 000 . . . AA 26/7 31.5 29.6 33.5 34.9 35.4
795 000 . . . AA 24/7 27.9 26.4 29.5 30.6 31.0
795 000 . . . AA 36/1 16.8 16.5 17.2 17.4 17.5
715 500 . . . AA 30/19 34.6 32.2 36.9 38.7 39.3
715 500 . . . AA 26/7 28.4 26.6 30.1 31.4 31.9
715 500 . . . AA 24/7 25.5 24.1 26.9 27.9 28.3
666 600 . . . AA 26/7 26.4 24.8 28.0 29.3 29.7
666 600 . . . AA 24/7 23.7 22.4 25.0 26.0 26.3
636 000 . . . AA 30/19 31.5 29.4 33.6 35.2 35.8
636 000 . . . AA 30/7 30.4 28.7 33.2 34.9 35.4
636 000 . . . AA 26/7 25.2 23.6 26.8 27.9 28.3
636 000 . . . AA 24/7 22.6 21.4 23.9 24.8 25.1
636 000 . . . AA 36/1 13.8 13.5 14.0 14.2 14.3
636 000 . . . AA 18/1 15.7 15.3 16.3 16.7 16.9
605 000 . . . AA 30/19 30.0 28.0 32.0 33.5 34.0
605 000 . . . AA 30/7 28.9 27.3 31.6 33.2 33.7
605 000 . . . AA 26/7 24.3 22.8 25.8 26.9 27.3
605 000 . . . AA 24/7 21.6 20.4 22.7 23.6 23.9
556 500 . . . AA 30/7 27.8 25.8 29.7 31.2 31.7
556 500 . . . AA 26/7 22.6 21.2 24.0 25.0 25.3
556 500 . . . AA 24/7 19.8 18.7 20.9 21.7 22.0
556 500 . . . AA 18/1 13.7 13.4 14.3 14.6 14.8
477 000 . . . AA 30/7 23.8 22.1 25.5 26.8 27.2
477 000 . . . AA 26/7 19.5 18.4 20.7 21.6 21.9
477 000 . . . AA 24/7 17.2 16.2 18.1 18.8 19.0
477 000 . . . AA 18/1 11.8 11.5 12.3 12.6 12.7
397 500 . . . AA 30/7 20.3 18.9 21.7 22.8 23.1
397 500 . . . AA 26/7 16.3 15.3 17.2 18.0 18.2
397 500 . . . AA 24/7 14.6 13.9 15.4 16.0 16.2
397 500 . . . AA 18/1 9.94 9.7 10.4 10.6 10.7
336 400 . . . AA 30/7 17.3 16.2 18.5 19.4 19.7
336 400 . . . AA 26/7 14.1 13.3 14.9 15.5 15.7
336 400 . . . AA 18/1 8.68 8.4 8.96 9.17 9.24
300 000 . . . AA 26/7 12.7 12.0 13.4 14.0 14.2
266 800 . . . AA 26/7 11.3 10.6 11.9 12.4 12.6
266 800 . . . AA 18/1 6.88 6.7 7.1 7.27 7.32
211 600 0000 AA, A 6/1 8.35 7.95 9.01 9.41 9.55
211 300 . . . AA (HS) 12/7 20.7 18.9 22.6 24.0 24.4
203 200 . . . AA (HS) 16/19 28.4 25.8 31.1 33.1 33.7
190 800 . . . AA (HS) 12/7 18.7 17.0 20.4 21.6 22.1
176 900 . . . AA (HS) 12/7 17.3 15.8 18.9 20.1 20.4
167 800 000 AA, A 6/1 6.62 6.30 7.15 7.46 7.57
B232/B232M − 24
TABLE 3 Continued
Size
Stranding Design
ACSR/GA2 ACSR/GA3 ACSR/GA4 ACSR/GA5,
Class
ACSR/GC2
Aluminum/Steel
cmil AWG ACSR/MA2, ACSR/MA3, ACSR/MA4, ACSR/MA5,
kips
kips kips kips kips
159 000 . . . AA (HS) 12/7 16.0 14.6 17.4 18.4 18.8
134 600 . . . AA (HS) 12/7 13.6 12.4 14.8 15.7 16.0
133 100 00 AA, A 6/1 5.30 5.05 5.72 5.97 6.05
110 800 . . . AA (HS) 12/7 11.3 10.3 12.2 13.0 13.2
105 600 0 AA, A 6/1 4.38 4.12 4.65 4.85 4.91
101 800 . . . AA (HS) 12/7 10.4 9.46 11.2 11.9 12.1
83 690 1 AA, A 6/1 3.55 3.34 3.76 3.92 3.98
80 000 . . . AA (HS) 8/1 5.20 4.89 5.73 6.04 6.15
66 360 2 AA, A 7/1 3.64 3.39 3.90 4.09 4.15
66 360 2 AA, A 6/1 2.85 2.68 3.01 3.14 3.18
41 740 4 AA, A 7/1 2.36 2.20 2.52 2.64 2.68
41 740 4 AA, A 6/1 1.86 1.76 1.97 2.05 2.07
33 090 5 A 6/1 1.49 1.41 1.57 1.64 1.66
26 240 6 AA, A 6/1 1.19 1.12 1.26 1.30 1.32
A
1 kip = 1000 lbf = 4.448 kN.
Unless otherwise specified by the purchaser, the manufacturer 15.4 Tests for demonstration of rated strength of the com-
may have the option of determining the cross-sectional area by pleted conductor are not required by this specification but may
either of the following methods, except that in case of question be made if agreed upon between the manufacturer and the
regarding area compliance, the method of 13.1.2 shall be used: purchaser at the time of placing an order. If tested, the breaking
13.1.1 The area of cross section may be determined by
strength of the completed conductor shall be not less than the
calculations from diameter meas
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B232/B232M − 22 B232/B232M − 24
Standard Specification for
Concentric-Lay-Stranded Aluminum Conductors, Coated-
Steel Reinforced (ACSR)
This standard is issued under the fixed designation B232/B232M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers concentric-lay-stranded conductors made from round aluminum 1350-H19 (extra hard) wires and
round, coated steel core wire(s) for use as overhead electrical conductors (Explanatory Note 1 and Explanatory Note 2).
1.2 ACSR covered by this specification has nine types of coated steel core wire which are designated by abbreviations as follows
(Explanatory Note 2):
1.2.1 ACSR/GA or ACSR/GA2—ACSR using Class A zinc-coated steel wire,
1.2.2 ACSR/GC or ACSR/GC2—ACSR using Class C zinc-coated steel wire,
1.2.3 ACSR/MA or ACSR/MA2—ACSR using Class A Zn-5A1-MM coated steel wire,
1.2.4 ACSR/HS or ACSR/GA3—ACSR using Class A zinc-coated high-strength steel wires,
1.2.5 ACSR/MS or ACSR/MA3—ACSR using Class A Zn-5A1-MM coated high-strength steel wires,
1.2.6 ACSR/GA4—ACSR using Class A zinc-coated extra-high-strength steel wires,
1.2.7 ACSR/MA4—ACSR using Class A Zn-5A1-MM coated extra-high-strength steel wires,
1.2.8 ACSR/GA5—ACSR using Class A zinc-coated ultra-high-strength steel wires,
1.2.9 ACSR/MA5—ACSR using Class A Zn-5Al-MM coated ultra-high-strength steel wires.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductors
of Light Metals.
Current edition approved Dec. 1, 2022April 1, 2024. Published January 2023March 2024. Originally approved in 1948. Last previous edition approved in 20172022 as
B232/B232M – 17.B232/B232M – 22. DOI: 10.1520/B0232_B0232M-22.10.1520/B0232_B0232M-24.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B232/B232M − 24
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein:
2.2 ASTM Standards:
B230/B230M Specification for Aluminum 1350–H19 Wire for Electrical Purposes
B263/B263M Test Method for Determination of Cross-Sectional Area of Stranded Conductors
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
B498/B498M Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
B500/B500M Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical
Conductors
B606/B606M Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical
Conductors
B802/B802M Specification for Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical
Conductors
B803/B803M Specification for High-Strength Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in
Overhead Electrical Conductors
B957/B957M Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Use
in Overhead Electrical Conductors
B958/B958M Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc–5% Aluminum-Mischmetal Alloy-
Coated Steel Core Wire for Use in Overhead Electrical Conductors
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.3 ANSI Documents:
ANSI H35.1 American National Standard Alloy and Temper Designation Systems for Aluminum
ANSI H35.1M American National Standard for Alloy and Temper Designations Systems for Aluminum [Metric]
2.4 NIST Document:
NBS Handbook 100—Copper Wire Tables
2.5 Aluminum Association Document:
Publication 50, Code Words for Overhead Aluminum Electrical Conductors
3. Terminology
3.1 Definitions:
3.1.1 galvanized—zinc coated.
3.1 Definitions:
3.1.1 galvanized, adj—zinc coated.
3.2 Abbreviations:
3.2.1 Zn-5A1-MM—zinc-5 % aluminum-mischmetal alloy.
3.2.2 ACSR—aluminum conductor, steel reinforced.
3.2.3 ACSR/GA or ACSR/GA2—reinforced with galvanized steel core wire, coating Class A in accordance with Specification
B498/B498M.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600, Arlington, VA 22209, http://www.aluminum.org.
B232/B232M − 24
3.2.4 ACSR/GC or ACSR/GC2—reinforced with galvanized steel core wire, coating Class C in accordance with Specification
B498/B498M.
3.2.5 ACSR/HS or ACSR/GA3—reinforced with high-strength galvanized steel core wire in accordance with Specification
B606/B606M.
3.2.6 ACSR/MA or ACSR/MA2—reinforced with Zn-5A1-MM coated steel core wire, coating Class A in accordance with
Specification B802/B802M.
3.2.7 ACSR/MS or ACSR/MA3—reinforced with high-strength Zn-5A1-MM coated steel core wire in accordance with
Specification B803/B803M.
3.2.8 ACSR//MA4—reinforced with extra-high-strength Zn-5A1-MM coated steel core wire in accordance with Specification
B958/B958M.
3.2.9 ACSR/GA4—reinforced with extra-high-strength galvanized steel core wire in accordance with Specification B957/B957M.
3.2.10 ACSR/MA5—reinforced with ultra-high-strength Zn-5A1-MM coated steel core wire in accordance with Specification
B958/B958M.
3.2.11 ACSR/GA5—reinforced with ultra-high-strength galvanized steel core wire in accordance with Specification B957/B957M.
4. Classification
4.1 For the purpose of this specification conductors are classified as follows (Explanatory Notes 1 and 2):
4.1.1 Class AA—For bare conductors usually used in overhead lines. These conductors are divided into two types as follows:
4.1.1.1 Conductors used for regular over-head line construction, and
4.1.1.2 Conductors having a high ratio of mechanical strength to current-carrying capacity used for overhead ground wires and
for extra-long span construction. These are denoted under the Class column in Table 1 and Table 2 as “(HS)” for High Strength.
4.1.2 Class A—For conductors to be covered with weather-resistant materials.
5. Ordering Information
5.1 Orders for material under this specification shall include the following information:
5.1.1 Quantity of each size, stranding, and class,
5.1.2 Conductor size, circular-mil area or AWG (Section 9 and Table 1),
5.1.3 Number of wires, aluminum and steel (see Tables 1-5),
5.1.4 Type of steel core wire and type and area density (if applicable) of coating (see 6.2),
5.1.5 Direction of lay of outer layer of aluminum wires if other than right-hand (see 8.3),
5.1.6 Special tension test, if desired (see 15.3),
5.1.7 Place of inspection (Section 16),
5.1.8 Package size and type (see 17.1),
5.1.9 Heavy wood lagging, if required (see 17.3), and
B232/B232M − 24
TABLE 1 Construction Requirements of Aluminum Conductors, Steel Reinforced (ACSR)
Stranding
Stranding Nominal
Size
Code Design Aluminum Wires Steel Wires O.D. of Mass,
Class
A
Words Aluminum/ Conductors, lb/1000 ft
Diameter, Diameter,
cmil AWG Number Layers Number Layers
Steel in.
in. in.
2 312 000 . . . Thrasher AA 76/19 76 0.1744 4 19 0.0814 2 1.802 2523
2 167 000 . . . Kiwi AA 72/7 72 0.1735 4 7 0.1157 1 1.735 2301
2 156 000 . . . Bluebird AA 84/19 84 0.1602 4 19 0.0961 2 1.762 2508
1 780 000 . . . Chukar AA 84/19 84 0.1456 4 19 0.0874 2 1.602 2072
1 590 000 . . . Falcon AA 54/19 54 0.1716 3 19 0.1030 2 1.545 2042
1 590 000 . . . Lapwing AA 45/7 45 0.1880 3 7 0.1253 1 1.504 1790
1 510 500 . . . Parrot AA 54/19 54 0.1672 3 19 0.1003 2 1.505 1938
1 510 500 . . . Nuthatch AA 45/7 45 0.1832 3 7 0.1221 1 1.466 1700
1 431 000 . . . Plover AA 54/19 54 0.1628 3 19 0.0977 2 1.465 1838
1 431 000 . . . Bobolink AA 45/7 45 0.1783 3 7 0.1189 1 1.427 1611
1 351 500 . . . Martin AA 54/19 54 0.1582 3 19 0.0949 2 1.424 1735
1 351 500 . . . Dipper AA 45/7 45 0.1733 3 7 0.1155 1 1.386 1521
1 272 000 . . . Pheasant AA 54/19 54 0.1535 3 19 0.0921 2 1.382 1634
1 272 000 . . . Bittern AA 45/7 45 0.1681 3 7 0.1121 1 1.345 1432
1 272 000 . . . Skylark AA 36/1 36 0.1880 3 1 0.1880 0 1.316 1286
1 192 500 . . . Grackle AA 54/19 54 0.1486 3 19 0.0892 2 1.338 1531
1 192 500 . . . Bunting AA 45/7 45 0.1628 3 7 0.1085 1 1.302 1342
1 113 000 . . . Finch AA 54/19 54 0.1436 3 19 0.0862 2 1.293 1430
1 113 000 . . . Bluejay AA 45/7 45 0.1573 3 7 0.1049 1 1.259 1254
1 033 500 . . . Curlew AA 54/7 54 0.1383 3 7 0.1383 1 1.245 1329
1 033 500 . . . Ortolan AA 45/7 45 0.1515 3 7 0.1010 1 1.212 1163
1 033 500 . . . Tanager AA 36/1 36 0.1694 3 1 0.1694 0 1.186 1044
954 000 . . . Cardinal AA 54/7 54 0.1329 3 7 0.1329 1 1.196 1227.1
954 000 . . . Rail AA 45/7 45 0.1456 3 7 0.0971 1 1.165 1074
954 000 . . . Catbird AA 36/1 36 0.1628 3 1 0.1628 0 1.140 964
900 000 . . . Canary AA 54/7 54 0.1291 3 7 0.1291 1 1.162 1158
900 000 . . . Ruddy AA 45/7 45 0.1414 3 7 0.0943 1 1.131 1013
795 000 . . . Mallard AA 30/19 30 0.1628 2 19 0.0977 2 1.140 1233.9
795 000 . . . Condor AA 54/7 54 0.1213 3 7 0.1213 1 1.092 1022
795 000 . . . Tern AA 45/7 45 0.1329 3 7 0.0886 1 1.063 895
795 000 . . . Drake AA 26/7 26 0.1749 2 7 0.1360 1 1.108 1093
795 000 . . . Cuckoo AA 24/7 24 0.1820 2 7 0.1213 1 1.092 1023
795 000 . . . Coot AA 36/1 36 0.1486 3 1 0.1486 0 1.040 803.6
715 500 . . . Redwing AA 30/19 30 0.1544 2 19 0.0926 2 1.081 1109.3
715 500 . . . Starling AA 26/7 26 0.1659 2 7 0.1290 1 1.051 983.7
715 500 . . . Stilt AA 24/7 24 0.1727 2 7 0.1151 1 1.036 921
666 600 . . . Gannet AA 26/7 26 0.1601 2 7 0.1245 1 1.014 916.2
666 600 . . . Flamingo AA 24/7 24 0.1667 2 7 0.1111 1 1.000 857.9
636 000 . . . Egret AA 30/19 30 0.1456 2 19 0.0874 2 1.019 987.2
636 000 . . . Scoter AA 30/7 30 0.1456 2 7 0.1456 1 1.019 995.1
636 000 . . . Grosbeak AA 26/7 26 0.1564 2 7 0.1216 1 0.990 874.2
636 000 . . . Rook AA 24/7 24 0.1628 2 7 0.1085 1 0.977 818.2
636 000 . . . Swift AA 36/1 36 0.1329 3 1 0.1329 0 0.930 642.8
636 000 . . . Kingbird AA 18/1 18 0.1880 2 1 0.1880 0 0.940 689.9
605 000 . . . Teal AA 30/19 30 0.1420 2 19 0.0852 2 0.994 938.6
605 000 . . . Wood Duck AA 30/7 30 0.1420 2 7 0.1420 1 0.994 946.5
605 000 . . . Squab AA 26/7 26 0.1525 2 7 0.1186 1 0.966 831.3
605 000 . . . Peacock AA 24/7 24 0.1588 2 7 0.1059 1 0.953 778.8
556 500 . . . Eagle AA 30/7 30 0.1362 2 7 0.1362 1 0.953 870.7
556 500 . . . Dove AA 26/7 26 0.1463 2 7 0.1138 1 0.927 765.2
556 500 . . . Parakeet AA 24/7 24 0.1523 2 7 0.1015 1 0.914 716.1
556 500 . . . Osprey AA 18/1 18 0.1758 2 1 0.1758 0 0.879 603.3
477 000 . . . Hen AA 30/7 30 0.1261 2 7 0.1261 1 0.883 746.4
477 000 . . . Hawk AA 26/7 26 0.1354 2 7 0.1053 1 0.858 655.3
477 000 . . . Flicker AA 24/7 24 0.1410 2 7 0.0940 1 0.846 613.9
477 000 . . . Pelican AA 18/1 18 0.1628 2 1 0.1628 0 0.814 517.3
397 500 . . . Lark AA 30/7 30 0.1151 2 7 0.1151 1 0.806 621.8
397 500 . . . Ibis AA 26/7 26 0.1236 2 7 0.0961 1 0.783 546.0
397 500 . . . Brant AA 24/7 24 0.1287 2 7 0.0858 1 0.772 511.4
397 500 . . . Chickadee AA 18/1 18 0.1486 2 1 0.1486 0 0.743 431.0
336 400 . . . Oriole AA 30/7 30 0.1059 2 7 0.1059 1 0.741 526.4
336 400 . . . Linnet AA 26/7 26 0.1137 2 7 0.0884 1 0.720 462.0
336 400 . . . Merlin AA 18/1 18 0.1367 2 1 0.1367 0 0.684 364.8
300 000 . . . Ostrich AA 26/7 26 0.1074 2 7 0.0835 1 0.680 412.2
266 800 . . . Partridge AA 26/7 26 0.1013 2 7 0.0788 1 0.642 366.9
266 800 . . . Waxwing AA 18/1 18 0.1217 2 1 0.1217 0 0.609 289.1
211 600 0000 Penguin AA, A 6/1 6 0.1878 1 1 0.1878 0 0.563 290.8
211 300 . . . Cochin AA (HS) 12/7 12 0.1327 1 7 0.1327 1 0.664 526.8
203 200 . . . Brahma AA (HS) 16/19 16 0.1127 1 19 0.0977 2 0.714 674.6
190 800 . . . Dorking AA (HS) 12/7 12 0.1261 1 7 0.1261 1 0.631 475.7
176 900 . . . Dotterel AA (HS) 12/7 12 0.1214 1 7 0.1214 1 0.607 440.9
B232/B232M − 24
TABLE 1 Continued
Stranding
Stranding Nominal
Size
Code Design Aluminum Wires Steel Wires O.D. of Mass,
Class
A
Words Aluminum/ Conductors, lb/1000 ft
Diameter, Diameter,
cmil AWG Number Layers Number Layers
Steel in.
in. in.
167 800 000 Pigeon AA, A 6/1 6 0.1672 1 1 0.1672 0 0.502 230.5
159 000 . . . Guinea AA (HS) 12/7 12 0.1151 1 7 0.1151 1 0.576 396.3
134 600 . . . Leghorn AA (HS) 12/7 12 0.1059 1 7 0.1059 1 0.530 335.5
133 100 00 Quail AA, A 6/1 6 0.1489 1 1 0.1489 0 0.447 182.8
110 800 . . . Minorca AA (HS) 12/7 12 0.0961 1 7 0.0961 1 0.481 276.3
105 600 0 Raven AA, A 6/1 6 0.1327 1 1 0.1327 0 0.398 145.2
101 800 . . . Petrel AA (HS) 12/7 12 0.0921 1 7 0.0921 1 0.461 253.8
83 690 1 Robin AA, A 6/1 6 0.1181 1 1 0.1181 0 0.354 115.0
80 000 . . . Grouse AA (HS) 8/1 8 0.1000 1 1 0.1670 0 0.367 148.8
66 360 2 Sparate AA, A 7/1 7 0.0974 1 1 0.1299 0 0.325 106.63
66 360 2 Sparrow AA, A 6/1 6 0.1052 1 1 0.1052 0 0.316 91.2
41 740 4 Swanate AA, A 7/1 7 0.0772 1 1 0.1029 0 0.257 66.95
41 740 4 Swan AA, A 6/1 6 0.0834 1 1 0.0834 0 0.250 57.35
33 090 5 . . . A 6/1 6 0.0743 1 1 0.0743 0 0.223 45.51
26 240 6 Turkey AA, A 6/1 6 0.0661 1 1 0.0661 0 0.198 36.02
A
Code words shown are provided here for information only. These code names apply to Class AA Bare Aluminum Conductors, Steel Reinforced (ACSR) as shown above.
They do not apply to Class A products shown in the above table.
Conversion factors:
1 cmil = 5.067 E – 4 mm
1 in. = 25.4 mm
1 lb/1000ft = 1.4882 kg/km
1 ft = 0.3048 m
1 kip = 1000 lbf = 4.448 kN
5.1.10 Special package marking, if required (see 17.4).
6. Requirement for Wires
6.1 Before stranding, the aluminum wire used shall meet the requirements of Specification B230/B230M.
6.2 Before stranding, the steel core wire used shall meet the requirements of Specification B498/B498M, B606/B606M,
B802/B802M, B803/B803M, B957/B957M, or B958/B958M, whichever is applicable.
7. Joints
7.1 Electric-butt welds, cold-pressure welds, and electric-butt, cold-upset welds in the finished individual aluminum wires
composing the conductor may be made during the stranding process. No weld shall occur within 50 ft [15 m] of a weld in the same
wire or in any other wire of the completed conductor (Explanatory Note 3).
7.2 There shall be no joints of any kind made in the finished zinc-coated or zinc-5% aluminum-mischmetal alloy coated steel
wires.
8. Lay
8.1 The length of lay of the various layers of aluminum wires in a conductor shall conform to Table 5 (see Explanatory Note 4).
8.2 The length of lay of the various layers of steel wire shall conform to the requirements of B500/B500M.
8.3 The direction of lay of the outside layer of aluminum wires shall be right hand unless otherwise specified in the purchaser
order. The direction of lay of the aluminum and steel wires shall be reversed in successive layers.
8.4 In a conductor having multiple layers of aluminum wires, the length of lay of any aluminum layer shall not be less than the
length of lay of the aluminum layer immediately beneath it.
B232/B232M − 24
TABLE 2 Construction Requirements—Aluminum Conductors, Steel Reinforced (ACSR)
Stranding Nominal
Outside
Size, Stranding Aluminum Wires Steel Wires Mass,
Class Diameter of
mm Design kg/km
Diameter, Diameter, Conductors,
Number Layers Number Layers
mm mm
mm
1250 AA 84/19 84 4.35 4 19 2.61 2 47.85 4274
1250 AA 76/19 76 4.58 4 19 2.14 2 47.34 4023
1250 AA 72/7 72 4.70 4 7 3.13 1 46.99 3901
1120 AA 84/19 84 4.12 4 19 2.47 2 45.31 3833
1120 AA 76/19 76 4.33 4 19 2.02 2 44.74 3595
1120 AA 72/7 72 4.45 4 7 2.97 1 44.51 3499
1000 AA 84/19 84 3.89 4 19 2.33 2 42.77 3416
1000 AA 72/7 72 4.21 4 7 2.81 1 42.11 3132
900 AA 84/19 84 3.69 4 19 2.21 2 40.57 3073
900 AA 72/7 72 3.99 4 7 2.66 1 39.9 2812
800 AA 54/19 54 4.34 3 19 2.60 2 39.04 3015
800 AA 45/7 45 4.76 3 7 3.17 1 38.07 2652
710 AA 54/19 54 4.09 3 19 2.45 2 36.79 2678
710 AA 45/7 45 4.48 3 7 2.99 1 35.85 2351
630 AA 54/19 54 3.85 3 19 2.31 2 34.65 2375
630 AA 45/7 45 4.22 3 7 2.81 1 33.75 2084
560 AA 54/19 54 3.63 3 19 2.18 2 32.68 2112
560 AA 45/7 45 3.98 3 7 2.65 1 31.83 1854
500 AA 54/7 54 3.43 3 7 3.43 1 30.87 1889
500 AA 45/7 45 3.76 3 7 2.51 1 30.09 1656
450 AA 54/7 54 3.26 3 7 3.26 1 29.34 1706
450 AA 45/7 45 3.57 3 7 2.38 1 28.56 1492
400 AA 30/19 30 4.12 2 19 2.47 2 28.83 1824
400 AA 26/7 26 4.43 2 7 3.45 1 28.07 1622
400 AA 24/7 24 4.61 2 7 3.07 1 27.65 1515
355 AA 30/19 30 3.88 2 19 2.33 2 27.17 1620
355 AA 26/7 26 4.17 2 7 3.24 1 26.4 1435
355 AA 24/7 24 4.34 2 7 2.89 1 26.03 1343
315 AA 30/19 30 3.66 2 19 2.20 2 25.64 1443
315 AA 26/7 26 3.93 2 7 3.06 1 24.9 1277
315 AA 24/7 24 4.09 2 7 2.73 1 24.55 1194
315 AA 18/1 18 4.72 2 1 4.72 0 23.6 1014
280 AA 30/7 30 3.45 2 7 3.45 1 24.15 1291
280 AA 26/7 26 3.70 2 7 2.88 1 23.44 1131
280 AA 24/7 24 3.85 2 7 2.57 1 23.11 1058
280 AA 18/1 18 4.45 2 1 4.45 0 22.25 901.0
250 AA 30/7 30 3.26 2 7 3.26 1 22.82 1152
250 AA 26/7 26 3.50 2 7 2.72 1 22.16 1011
250 AA 24/7 24 3.64 2 7 2.43 1 21.85 946.0
250 AA 18/1 18 4.21 2 1 4.21 0 21.05 806.4
224 AA 30/7 30 3.08 2 7 3.08 1 21.56 1029
224 AA 26/7 26 3.31 2 7 2.57 1 20.95 904.0
224 AA 24/7 24 3.45 2 7 2.30 1 20.7 849.2
224 AA 18/1 18 3.98 2 1 3.98 0 19.9 720.7
200 AA 30/7 30 2.91 2 7 2.91 1 20.37 918.2
200 AA 26/7 26 3.13 2 7 2.43 1 19.81 808.3
200 AA 24/7 24 3.26 2 7 2.17 1 19.55 757.6
200 AA 18/1 18 3.76 2 1 3.76 0 18.8 643.2
180 AA 30/7 30 2.76 2 7 2.76 1 19.32 826.0
180 AA 26/7 26 2.97 2 7 2.31 1 18.81 728.6
180 AA 24/7 24 3.09 2 7 2.06 1 18.54 681.2
180 AA 18/1 18 3.57 2 1 3.57 0 17.85 579.9
160 AA 30/7 30 2.61 2 7 2.61 1 18.27 738.6
160 AA 26/7 26 2.80 2 7 2.18 1 17.74 648.0
160 AA 24/7 24 2.91 2 7 1.94 1 17.46 604.2
160 AA 18/1 18 3.36 2 1 3.36 0 16.8 513.7
140 AA 26/7 26 2.62 2 7 2.04 1 16.6 567.4
140 AA 24/7 24 2.73 2 7 1.82 1 16.38 531.8
B232/B232M − 24
TABLE 2 Continued
Stranding Nominal
Outside
Size, Stranding Aluminum Wires Steel Wires Mass,
Class Diameter of
mm Design kg/km
Diameter, Diameter, Conductors,
Number Layers Number Layers
mm mm mm
140 AA 18/1 18 3.15 2 1 3.15 0 15.75 451.5
125 AA 26/7 26 2.47 2 7 1.92 1 15.64 503.7
125 AA 24/7 24 2.58 2 7 1.72 1 15.48 474.9
125 AA 18/1 18 2.97 2 1 2.97 0 14.85 401.3
100 AA (HS) 16/19 16 2.82 1 19 2.44 2 17.84 972.4
100 AA (HS) 12/7 12 3.26 1 7 3.26 1 16.3 734.1
100 AA, A 6/1 6 4.61 1 1 4.61 0 13.83 404.8
90 AA (HS) 12/7 12 3.09 1 7 3.09 1 15.45 659.5
80 AA (HS) 12/7 12 2.91 1 7 2.91 1 14.55 584.9
80 AA, A 6/1 6 4.12 1 1 4.12 0 12.36 323.3
71 AA (HS) 12/7 12 2.74 1 7 2.74 1 13.7 518.6
63 AA (HS) 12/7 12 2.59 1 7 2.59 1 12.95 463.4
63 AA, A 6/1 6 3.66 1 1 3.66 0 10.98 255.2
56 AA (HS) 12/7 12 2.44 1 7 2.44 1 12.2 411.2
50 AA (HS) 12/7 12 2.30 1 7 2.30 1 11.5 365.4
50 AA, A 6/1 6 3.26 1 1 3.26 0 9.78 202.4
40 AA (HS) 8/1 8 2.52 1 1 4.20 0 9.24 217.9
40 AA, A 6/1 6 2.91 1 1 2.91 0 8.73 161.3
31.5 AA, A 7/1 7 2.39 1 1 3.19 0 7.97 148.4
31.5 AA, A 6/1 6 2.59 1 1 2.59 0 7.77 127.8
25 AA, A 7/1 7 2.13 1 1 2.84 0 7.1 117.8
25 AA, A 6/1 6 2.30 1 1 2.30 0 6.9 100.8
20 AA, A 7/1 7 1.91 1 1 2.55 0 6.37 94.80
20 AA, A 6/1 6 2.06 1 1 2.06 0 6.18 80.83
16 AA, A 6/1 6 1.84 1 1 1.84 0 5.52 64.49
12.5 AA, A 6/1 6 1.63 1 1 1.63 0 4.89 50.61
9. Construction
9.1 ACSR may be constructed using steel core wire with any one of two types of protective coatings. The acceptable core wires
are:
9.1.1 Galvanized steel core wires, with coating Classes A or C in accordance with Specification B498/B498M;
9.1.2 High-strength galvanized steel core wire, coating Class A in accordance with Specification B606/B606M;
9.1.3 Zn-5A1-MM coated steel core wire, coating Class A, in accordance with Specification B802/B802M;
9.1.4 High-strength Zn-5A1-MM coated steel core wire, coating Class A in accordance with Specification B803/B803M;
9.1.5 Extra-high-strength galvanized steel core wire coating Class A in accordance with Specification B957/B957M;
9.1.6 Extra-high-strength Zn-5Al-MM coated steel core wire, coating Class A in accordance with Specification B958/B958M;
9.1.7 Ultra-high-strength galvanized steel core wire coating Class A in accordance with Specification B957/B957M; or
9.1.8 Ultra-high-strength Zn-5Al-MM coated steel core wire, coating Class A in accordance with Specification B958/B958M.
9.2 The number and diameter of aluminum and steel wires and the area of cross section of aluminum wires shall conform to the
requirements prescribed in Tables 1-5.
9.3 Where compressed stranding is required in order to insulate the conductor properly, one or more aluminum layers of any
stranded conductor consisting of 7 wires or more may be slightly compressed. The nominal diameter of the compressed conductor
is 3 % below the nominal diameter of noncompressed conductor and the area of cross section after compressing is in accordance
with Section 13.
B232/B232M − 24
A
TABLE 3 Rated Strength Aluminum Conductors, Steel Reinforced (ACSR)
Size
Stranding Design
ACSR/GA2 ACSR/GA3 ACSR/GA4 ACSR/GA5,
Class
ACSR/GC2
Aluminum/Steel
cmil AWG ACSR/MA2, ACSR/MA3, ACSR/MA4, ACSR/MA5,
kips
kips kips kips kips
2 312 000 . . . AA 76/19 56.7 54.8 58.5 59.9 60.4
2 167 000 . . . AA 72/7 49.8 48.4 51.3 52.3 52.7
2 156 000 . . . AA 84/19 60.3 57.7 62.8 64.8 65.4
1 780 000 . . . AA 84/19 51.0 48.9 53.1 54.7 55.2
1 590 000 . . . AA 54/19 54.5 51.6 57.5 59.7 60.4
1 590 000 . . . AA 45/7 42.2 40.5 43.9 45.1 45.5
1 510 000 . . . AA 54/19 51.7 48.9 54.5 56.6 57.3
1 510 000 . . . AA 45/7 40.1 38.5 41.6 42.8 43.2
1 431 000 . . . AA 54/19 49.1 46.4 51.7 53.7 54.4
1 431 000 . . . AA 45/7 38.3 36.9 39.8 41.0 41.3
1 351 000 . . . AA 54/19 46.3 43.8 48.8 50.7 51.3
1 351 000 . . . AA 45/7 36.2 34.8 37.6 38.7 39
1 272 000 . . . AA 54/19 43.6 41.2 46.0 47.7 48.3
1 272 000 . . . AA 45/7 34.1 32.8 35.4 36.4 36.7
1 272 000 . . . AA 36/1 26.4 26.0 27.0 27.4 27.6
1 192 500 . . . AA 54/19 41.9 39.7 44.1 45.7 46.3
1 192 500 . . . AA 45/7 32.0 30.7 33.2 34.1 34.4
1 113 000 . . . AA 54/19 39.1 37.0 41.2 42.7 43.2
1 113 000 . . . AA 45/7 29.8 28.7 31.0 31.9 32.2
1 033 500 . . . AA 54/7 36.6 34.6 38.6 40.2 40.7
1 033 500 . . . AA 45/7 27.7 26.6 28.8 29.6 29.8
1 033 500 . . . AA 36/1 21.4 21.1 21.9 22.3 22.4
954 000 . . . AA 54/7 33.8 32.0 35.7 37.1 37.6
954 000 . . . AA 45/7 25.9 24.9 26.9 27.7 27.9
954 000 . . . AA 36/1 19.8 19.5 20.3 20.6 20.7
900 000 . . . AA 54/7 31.9 30.2 33.7 35.0 35.4
900 000 . . . AA 45/7 24.4 23.5 25.4 26.1 26.3
795 000 . . . AA 30/19 38.4 35.8 41.1 43.1 43.7
795 000 . . . AA 54/7 28.2 26.6 29.7 30.9 31.3
795 000 . . . AA 45/7 22.1 21.2 22.9 23.5 23.7
795 000 . . . AA 26/7 31.5 29.6 33.5 34.9 35.4
795 000 . . . AA 24/7 27.9 26.4 29.5 30.6 31.0
795 000 . . . AA 36/1 16.8 16.5 17.2 17.4 17.5
715 500 . . . AA 30/19 34.6 32.2 36.9 38.7 39.3
715 500 . . . AA 26/7 28.4 26.6 30.1 31.4 31.9
715 500 . . . AA 24/7 25.5 24.1 26.9 27.9 28.3
666 600 . . . AA 26/7 26.4 24.8 28.0 29.3 29.7
666 600 . . . AA 24/7 23.7 22.4 25.0 26.0 26.3
636 000 . . . AA 30/19 31.5 29.4 33.6 35.2 35.8
636 000 . . . AA 30/7 30.4 28.7 33.2 34.9 35.4
636 000 . . . AA 26/7 25.2 23.6 26.8 27.9 28.3
636 000 . . . AA 24/7 22.6 21.4 23.9 24.8 25.1
636 000 . . . AA 36/1 13.8 13.5 14.0 14.2 14.3
636 000 . . . AA 18/1 15.7 15.3 16.3 16.7 16.9
605 000 . . . AA 30/19 30.0 28.0 32.0 33.5 34.0
605 000 . . . AA 30/7 28.9 27.3 31.6 33.2 33.7
605 000 . . . AA 26/7 24.3 22.8 25.8 26.9 27.3
605 000 . . . AA 24/7 21.6 20.4 22.7 23.6 23.9
556 500 . . . AA 30/7 27.8 25.8 29.7 31.2 31.7
556 500 . . . AA 26/7 22.6 21.2 24.0 25.0 25.3
556 500 . . . AA 24/7 19.8 18.7 20.9 21.7 22.0
556 500 . . . AA 18/1 13.7 13.4 14.3 14.6 14.8
477 000 . . . AA 30/7 23.8 22.1 25.5 26.8 27.2
477 000 . . . AA 26/7 19.5 18.4 20.7 21.6 21.9
477 000 . . . AA 24/7 17.2 16.2 18.1 18.8 19.0
477 000 . . . AA 18/1 11.8 11.5 12.3 12.6 12.7
397 500 . . . AA 30/7 20.3 18.9 21.7 22.8 23.1
397 500 . . . AA 26/7 16.3 15.3 17.2 18.0 18.2
397 500 . . . AA 24/7 14.6 13.9 15.4 16.0 16.2
397 500 . . . AA 18/1 9.94 9.7 10.4 10.6 10.7
336 400 . . . AA 30/7 17.3 16.2 18.5 19.4 19.7
336 400 . . . AA 26/7 14.1 13.3 14.9 15.5 15.7
336 400 . . . AA 18/1 8.68 8.4 8.96 9.17 9.24
300 000 . . . AA 26/7 12.7 12.0 13.4 14.0 14.2
266 800 . . . AA 26/7 11.3 10.6 11.9 12.4 12.6
266 800 . . . AA 18/1 6.88 6.7 7.1 7.27 7.32
211 600 0000 AA, A 6/1 8.35 7.95 9.01 9.41 9.55
211 300 . . . AA (HS) 12/7 20.7 18.9 22.6 24.0 24.4
203 200 . . . AA (HS) 16/19 28.4 25.8 31.1 33.1 33.7
190 800 . . . AA (HS) 12/7 18.7 17.0 20.4 21.6 22.1
176 900 . . . AA (HS) 12/7 17.3 15.8 18.9 20.1 20.4
167 800 000 AA, A 6/1 6.62 6.30 7.15 7.46 7.57
B232/B232M − 24
TABLE 3 Continued
Size
Stranding Design
ACSR/GA2 ACSR/GA3 ACSR/GA4 ACSR/GA5,
Class
ACSR/GC2
Aluminum/Steel
cmil AWG ACSR/MA2, ACSR/MA3, ACSR/MA4, ACSR/MA5,
kips
kips kips kips kips
159 000 . . . AA (HS) 12/7 16.0 14.6 17.4 18.4 18.8
134 600 . . . AA (HS) 12/7 13.6 12.4 14.8 15.7 16.0
133 100 00 AA, A 6/1 5.30 5.05 5.72 5.97 6.05
110 800 . . . AA (HS) 12/7 11.3 10.3 12.2 13.0 13.2
105 600 0 AA, A 6/1 4.38 4.12 4.65 4.85 4.91
101 800 . . . AA (HS) 12/7 10.4 9.46 11.2 11.9 12.1
83 690 1 AA, A 6/1 3.55 3.34 3.76 3.92 3.98
80 000 . . . AA (HS) 8/1 5.20 4.89 5.73 6.04 6.15
66 360 2 AA, A 7/1 3.64 3.39 3.90 4.09 4.15
66 360 2 AA, A 6/1 2.85 2.68 3.01 3.14 3.18
41 740 4 AA, A 7/1 2.36 2.20 2.52 2.64 2.68
41 740 4 AA, A 6/1 1.86 1.76 1.97 2.05 2.07
33 090 5 A 6/1 1.49 1.41 1.57 1.64 1.66
26 240 6 AA, A 6/1 1.19 1.12 1.26 1.30 1.32
A
1 kip = 1000 lbf = 4.448 kN.
9.4 For “HS” (High Strength) type conductors as denoted in Table 1 and Table 2, unless specified by the customer, the default
strength of steel shall be regular strength Type GA2 to Specification B498/B498M or MA2 to Specification B802/B802M.
9.5 All steel wires shall lie naturally in their position in the stranded core, and where the core is cut, the wire ends shall remain
in position or be readily replaced by hand and then remain approximately in position. This requirement also applies to the outer
layer of aluminum wires of a conductor.
9.6 The stranded steel core shall be free from waviness and kinks.
9.7 Before stranding, aluminum and steel wires shall have approximately uniform temperatures.
9.8 The diameter of the finished conductor shall be not less than 99 % nor more than 101 % of that shown in Table 1 and Table
2 when measured with a diameter tape between the closing die(s) and the capstan of the strander.
10. Rated Strength of Conductor
10.1 The rated strength of a completed conductor shall be taken as the aggregate strength of the aluminum and steel components,
calculated as follows. The strength contribution of the aluminum wires shall be taken as the percentage, indicated in Table 6, of
the sum of the strengths of the 1350-H19 wires, calculated from their specified nominal wire diameter and the appropriate specified
minimum average tensile strength given in Specification B230/B230M. The strength contribution of the steel core wires shall be
taken as the percentage, according to the number of layers of steel wires, indicated in Table 6, of the sum of the strengths of the
steel wires, calculated from their specified nominal wire diameter and the appropriate specified minimum stress at 1 % extension
given in Specification B498/B498M, B606/B606M, B802/B802M, or B803/B803M, B957/B957M, or B958/B958M, whichever
is applicable.
10.2 Rated strength and breaking strength values shall be rounded to three significant figures, in the final value only, in accordance
with the rounding method of Practice E29.
10.3 Rated strength of various constructions are given in Table 3 or Table 4.
11. Density
11.1 For the purpose of calculating mass per unit length, cross sections, etc., the density of aluminum 1350 shall be taken from
Specification B230/B230M.
B232/B232M − 24
A
TABLE 4 Rated Strength—Aluminum Conductor, Steel Reinforced (ACSR)
Rated Strength (by type of steel core wire)
Size, Class Stranding ACSR/GA2 ACSR/GC2 ACSR/GA3 ACSR/GA4 ACSR/GA5
mm Design ACSR/MA2, kN ACSR/MA3, ACSR/MA4 ACSR/MA5,
kN kN kN kN
1250 AA 84/19 306 293 319 329 332
1250 AA 76/19 269 260 278 284 286
1250 AA 72/7 250 242 257 262 264
1120 AA 84/19 275 263 286 295 298
1120 AA 76/19 240 232 248 254 256
1120 AA 72/7 226 219 232 237 238
1000 AA 84/19 245 234 254 262 265
1000 AA 72/7 202 196 208 212 213
900 AA 84/19 226 217 236 243 245
900 AA 72/7 181 176 186 190 192
800 AA 54/19 240 227 252 262 265
800 AA 45/7 186 179 193 199 201
710 AA 54/19 213 201 224 233 236
710 AA 45/7 167 160 173 178 180
630 AA 54/19 189 179 199 207 209
630 AA 45/7 148 142 153 158 159
560 AA 54/19 173 164 182 189 191
560 AA 45/7 132 126 136 140 142
500 AA 54/7 154 145 163 169 171
500 AA 45/7 118 113 122 125 127
450 AA 54/7 139 131 147 153 155
450 AA 45/7 108 104 112 115 116
400 AA 30/19 170 158 181 190 193
400 AA 26/7 139 131 148 154 157
400 AA 24/7 123 116 130 135 137
355 AA 30/19 151 140 161 169 171
355 AA 26/7 123 115 131 136 138
355 AA 24/7 111 105 117 121 123
315 AA 30/19 138 128 147 154 156
315 AA 26/7 110 103 117 122 123
315 AA 24/7 98.7 93.2 104 108 109
315 AA 18/1 68.0 66.3 70.8 72.7 73.2
280 AA 30/7 122 113 131 137 140
280 AA 26/7 100 94.1 106 111 112
280 AA 24/7 87.5 82.6 92.0 95.7 96.9
280 AA 18/1 60.4 58.9 63.0 64.6 65.1
250 AA 30/
...