ASTM B856-18

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: Historical
• Publication Date: 28-Feb-2018
• ICS: 29.060.10 - Wires
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.07 - Conductors of Light Metals

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B856 −18
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 B354 Terminology Relating to Uninsulated Metallic Electri-
cal Conductors
1.1 This specification covers round wire concentric-lay-
B498/B498M Specification for Zinc-Coated (Galvanized)
stranded aluminum conductors, steel supported (ACSS) for use
Steel Core Wire for Use in Overhead Electrical Conduc-
as overhead electrical conductors (see Explanatory Note 1).
tors
1.2 The values stated in inch-pound or SI units are to be
B500/B500M Specification for Metallic Coated or Alumi-
regarded separately as standard. Each system shall be used
num Clad Stranded Steel Core for Use in Overhead
independently of the other. Combining values from the two
Electrical Conductors
systems may result in nonconformance with the specification.
B502 Specification for Aluminum-Clad Steel Core Wire for
For conductor sizes designated by AWG or kcmil sizes, the
Use in Overhead Electrical Aluminum Conductors
requirements in SI units are numerically converted from the
B549 Specification for Concentric-Lay-Stranded Aluminum
correspondingrequirementsininch-poundunits.Forconductor
Conductors, Aluminum-Clad Steel Reinforced for Use in
sizes designation by AWG or kcmil, the requirements in SI
Overhead Electrical Conductors
units have been numerically converted from corresponding
values stated or derived in inch-pound units. For conductor B606 Specification for High-Strength Zinc-Coated (Galva-
sizesdesignatedbySIunitsonly,therequirementsarestatedor nized) Steel Core Wire for Aluminum and Aluminum-
derived in SI units.
Alloy Conductors, Steel Reinforced
1.2.1 For density, resistivity and temperature, the values
B609/B609M Specification for Aluminum 1350 Round
stated in SI units are to be regarded as standard.
Wire, Annealed and Intermediate Tempers, for Electrical
Purposes
1.3 This international standard was developed in accor-
dance with internationally recognized principles on standard- B802/B802M Specification for Zinc–5 % Aluminum-
ization established in the Decision on Principles for the
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
Development of International Standards, Guides and Recom-
Conductors, Steel Reinforced (ACSR)
mendations issued by the World Trade Organization Technical
B803 Specification for High-Strength Zinc–5 % Aluminum-
Barriers to Trade (TBT) Committee.
Mischmetal Alloy-Coated Steel Core Wire for Use in
Overhead Electrical Conductors
2. Referenced Documents
B857 Specification for Shaped Wire Compact Concentric-
2.1 The following documents of the issue in effect on date
Lay-Stranded Aluminum Conductors, Coated-Steel Sup-
ofmaterialpurchaseformpartofthisspecificationtotheextent
ported (ACSS/TW)
referenced herein:
B957 Specification for Extra-High-Strength and Ultra-High-
2
2.2 ASTM Standards: Strength Zinc-Coated (Galvanized) Steel Core Wire for
B263 Test Method for Determination of Cross-Sectional
Overhead Electrical Conductors
Area of Stranded Conductors
B958 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
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
Conductors of Light Metals.
B1006 Specification for Electrical Overhead Conductor
Current edition approved March 1, 2018. Published March 2018. Originally
Code Word Names
approved in 1995. Last previous edition approved in 2013 as B856 – 13. DOI:
10.1520/B0856-18. 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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B856−18
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 following information:
NBS Handbook 100 —Copper Wire Ta
...

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 − 13 B856 − 18
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:
B263 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
B502 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
B606 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)
B803 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)
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 April 1, 2013March 1, 2018. Published May 2013March 2018. Originally approved in 1995. Last previous edition approved in 20122013 as B856
– 12.13. DOI: 10.1520/B0856-13.10.1520/B0856-18.
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’sstandard’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

---------------------- Page: 1 ----------------------
B856 − 18
B957 Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Overhead
Electrical Conductors
B958 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 Significant Digits in Test Data to Determine Conformance with Sp
...