ASTM B856-22

Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS)

ABSTRACT
This specification covers round wire concentric-lay-stranded aluminium conductors, steel supported (ACSS) for use as ovehead electrical conductors. Tests for mechanical and electrical properties of aluminum wires shall be made after stranding. The electrical resistivity shall meet the minimum resistivity specified for the wire after stranding.
SCOPE
1.1 This specification covers round wire concentric-lay-stranded aluminum conductors, steel supported (ACSS) for use as overhead electrical conductors (see Explanatory Note 1).  
1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. For conductor sizes designated by AWG or kcmil sizes, the requirements in SI units are numerically converted from the corresponding requirements in inch-pound units. For conductor sizes designation by AWG or kcmil, the requirements in SI units have been numerically converted from corresponding values stated or derived in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or derived in SI units.  
1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.  
1.3 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: 30-Nov-2022
• ICS: 29.060.10 - Wires
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.07 - Conductors of Light Metals

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:B856 −22
Standard Specification for
Concentric-Lay-Stranded Aluminum Conductors, Coated
1
Steel Supported (ACSS)
This standard is issued under the fixed designation B856; 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 B263/B263M Test Method for Determination of Cross-
Sectional Area of Stranded Conductors
1.1 This specification covers round wire concentric-lay-
B354 Terminology Relating to Uninsulated Metallic Electri-
stranded aluminum conductors, steel supported (ACSS) for use
cal Conductors
as overhead electrical conductors (see Explanatory Note 1).
B498/B498M Specification for Zinc-Coated (Galvanized)
1.2 The values stated in inch-pound or SI units are to be
Steel Core Wire for Use in Overhead Electrical Conduc-
regarded separately as standard. Each system shall be used
tors
independently of the other. Combining values from the two
B500/B500M Specification for Metallic Coated or Alumi-
systems may result in nonconformance with the specification.
num Clad Stranded Steel Core for Use in Overhead
For conductor sizes designated by AWG or kcmil sizes, the
Electrical Conductors
requirements in SI units are numerically converted from the
B502/B502M Specification for Aluminum-Clad Steel Core
correspondingrequirementsininch-poundunits.Forconductor
Wire for Use in Overhead Electrical Aluminum Conduc-
sizes designation by AWG or kcmil, the requirements in SI
tors
units have been numerically converted from corresponding
B606/B606M Specification for High-Strength Zinc-Coated
values stated or derived in inch-pound units. For conductor
(Galvanized) Steel Core Wire for Aluminum and
sizesdesignatedbySIunitsonly,therequirementsarestatedor
Aluminum-Alloy Conductors, Steel Reinforced
derived in SI units.
B609/B609M Specification for Aluminum 1350 Round
1.2.1 For density, resistivity and temperature, the values
Wire, Annealed and Intermediate Tempers, for Electrical
stated in SI units are to be regarded as standard.
Purposes
1.3 This international standard was developed in accor-
B802/B802M Specification for Zinc–5 % Aluminum-
dance with internationally recognized principles on standard- Mischmetal Alloy-Coated Steel Core Wire for Aluminum
ization established in the Decision on Principles for the
Conductors, Steel Reinforced (ACSR)
Development of International Standards, Guides and Recom- B803/B803M Specification for High-Strength Zinc–5 %
mendations issued by the World Trade Organization Technical
Aluminum-Mischmetal Alloy-Coated Steel Core Wire for
Barriers to Trade (TBT) Committee. Use in Overhead Electrical Conductors
B857 Specification for Shaped Wire Compact Concentric-
2. Referenced Documents
Lay-Stranded Aluminum Conductors, Coated-Steel Sup-
2.1 The following documents of the issue in effect on date ported (ACSS/TW)
B957/B957M Specification for Extra-High-Strength and
ofmaterialpurchaseformpartofthisspecificationtotheextent
referenced herein: Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core
Wire for Overhead Electrical Conductors
2
2.2 ASTM Standards:
B958/B958M Specification for Extra-High-Strength and
Ultra-High-Strength Class A Zinc–5% Aluminum-
1
This specification is under the jurisdiction of ASTM Committee B01 on
Mischmetal Alloy-Coated Steel Core Wire for Use in
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
Overhead Electrical Conductors
Conductors of Light Metals.
B1006 Specification for Electrical Overhead Conductor
Current edition approved Dec. 1, 2022. Published January 2023. Originally
Code Word Names
approved in 1995. Last previous edition approved in 2018 as B856 – 18. DOI:
10.1520/B0856-22.
E29 Practice for Using Significant Digits in Test Data to
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Determine Conformance with Specifications
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
E527 Practice for Numbering Metals and Alloys in the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Unified Numbering System (UNS)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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B856−22
2.3 Other Standards: 4. Ordering Information
AluminumAssociationPublication50 CodewordsforOver-
4.1 Orders for material under this specification shall include
3
head Aluminum Electrical Conductors
the foll
...

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: B856 − 18 B856 − 22
Standard Specification for
Concentric-Lay-Stranded Aluminum Conductors, Coated
1
Steel Supported (ACSS)
This standard is issued under the fixed designation B856; 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 round wire concentric-lay-stranded aluminum conductors, steel supported (ACSS) for use as
overhead electrical conductors (see Explanatory Note 1).
1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be used independently
of the other. Combining values from the two systems may result in nonconformance with the specification. For conductor sizes
designated by AWG or kcmil sizes, the requirements in SI units are numerically converted from the corresponding requirements
in inch-pound units. For conductor sizes designation by AWG or kcmil, the requirements in SI units have been numerically
converted from corresponding values stated or derived in inch-pound units. For conductor sizes designated by SI units only, the
requirements are stated or derived in SI units.
1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.
1.3 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 part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B263B263/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
B502B502/B502M Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors
B549 Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Clad Steel Reinforced for Use in Overhead
Electrical Conductors
1
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 March 1, 2018Dec. 1, 2022. Published March 2018January 2023. Originally approved in 1995. Last previous edition approved in 20132018 as
B856 – 13.18. DOI: 10.1520/B0856-18.10.1520/B0856-22.
2
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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B856 − 22
B606B606/B606M Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Aluminum and Aluminum-
Alloy Conductors, Steel Reinforced
B609/B609M Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
B802/B802M Specification for Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors,
Steel Reinforced (ACSR)
B803B803/B803M Specification for High-Strength Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in
Overhead Electrical Conductors
B857 Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported
(ACSS/TW)
B957B957/B957M Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire
for Overhead Electrical Conductors
B958B958/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
B1006 Specification for Electrical Overhead Conductor Code Word Names
E29 Practice for Using Significan
...