ASTM B500/B500M-12
(Specification)Standard Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical Conductors
Standard Specification for Metallic Coated or Aluminum Clad Stranded Steel Core for Use in Overhead Electrical Conductors
ABSTRACT
This specification covers zinc-coated (galvanized), zinc-aluminum-mischmetal alloy-coated, and aluminum-coated (aluminized) stranded steel wire core inserted for use in aluminum conductors, steel reinforced (ACSR). Prior to stranding, the metallic coated steel wire to be used in the production of the stranded core shall meet all of the requirements of the appropriate specification. Requirements for (1) coated steel wire joints, (2) stranding of the core such as lay length and lay direction, (3) construction of ACSR, and (4) tensile properties of stranded core are detailed. The standard stranded core lengths and methods of determining rated strength and calculating loads are given.
SCOPE
1.1 This specification covers 7-wire, 19-wire, 37-wire, and 61-wire zinc-coated (galvanized), zinc-5 % aluminum-mischmetal alloy-coated or aluminum clad stranded steel core intended for use in overhead electrical conductors.
1.2 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.
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Designation:B500/B500M −12
Standard Specification for
Metallic Coated or Aluminum Clad Stranded Steel Core for
1
Use in Overhead Electrical Conductors
This standard is issued under the fixed designation B500/B500M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Overhead Electrical Conductors
E83Practice for Verification and Classification of Exten-
1.1 This specification covers 7-wire, 19-wire, 37-wire, and
someter Systems
61-wire zinc-coated (galvanized), zinc-5 % aluminum-
B502Specification for Aluminum-Clad Steel Core Wire for
mischmetal alloy-coated or aluminum clad stranded steel core
Use in Overhead Electrical Aluminum Conductors
intended for use in overhead electrical conductors.
1.2 The values stated in either SI units or inch-pound units
3. Terminology
are to be regarded separately as standard. The values stated in
3.1 Definitions of Terms Specific to This Standard:
each system may not be exact equivalents; therefore, each
3.1.1 lot—unless otherwise specified in the contract or
system shall be used independently of the other. Combining
order, a lot shall consist of all coils or reels of strand of the
values from the two systems may result in non-conformance
same diameter and unit lengths submitted for inspection at the
with the standard.
same time.
3.1.2 production lot—all of the wire spools loaded into a
2. Referenced Documents
stranding machine that are used to produce a completed strand
2
2.1 ASTM Standards:
cable.
B498/B498MSpecification for Zinc-Coated (Galvanized)
Steel Core Wire for Use in Overhead Electrical Conduc-
4. Ordering Information
tors
4.1 Ordersformaterialunderthisspecificationshallinclude
B957Specification for Extra-High-Strength and Ultra-High-
the following information:
Strength Zinc-Coated (Galvanized) Steel Core Wire for
4.1.1 Length of each construction,
Overhead Electrical Conductors
4.1.2 Constructional description of stranded core (for
B958Specification for Extra-High-Strength and Ultra-High-
example, 7 × 0.0943 in. or 19 × 0.0977 in.) (8.1 and 8.2),
Strength Class A Zinc–5% Aluminum-Mischmetal Alloy-
4.1.3 The multiple length of stranded core and the total
Coated Steel Core Wire for Use in Overhead Electrical
numberofmultiplelengthsperreel,ifallowed(8.3andSection
Conductors
15),
B606Specification for High-Strength Zinc-Coated (Galva-
4.1.4 Strength and coating type or aluminum clad (Section
nized) Steel Core Wire for Aluminum and Aluminum-
8),
Alloy Conductors, Steel Reinforced
4.1.5 Direction of lay of outer layer (Section 7),
B802/B802M Specification for Zinc–5 % Aluminum-
4.1.6 Packaging (Section 15), and
MischmetalAlloy-Coated Steel Core Wire forAluminum
4.1.7 Place of inspection (Section 13).
Conductors, Steel Reinforced (ACSR)
B803Specification for High-Strength Zinc–5 %Aluminum-
5. Material
Mischmetal Alloy-Coated Steel Core Wire for Use in
5.1 The coated or aluminum clad steel wire used in the
production of the stranded core shall, prior to stranding, meet
1
This specification is under the jurisdiction of ASTM Committee B01 on
all of the requirements of the appropriate specification that
Electrical Conductors and is the direct responsibility of Subcommittee B01.05 on
follows:
Conductors of Ferrous Metals.
5.1.1 Specification B498/B498M,
Current edition approved April 1, 2012. Published May 2012. Originally
5.1.2 Specification B606,
approved in 1969. Last previous edition approved in 2010 as B500/B500M–10.
DOI: 10.1520/B0500_B0500M-12.
5.1.3 Specification B802/B802M, and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.4 Specification B803.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.5 Specification B957.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.1.6 Specification B958.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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B500/B500M−12
5.1.7 Specification B502. 10. Tensile Properties
10.1 The rated ultimate strength or strength at 1% exten-
6. Joints
sion of stranded core for overhead electrical conductors shall
6.1 Thereshallbenojointsofanykindmadeinthefinished
be taken as that percentage according to the number of wires,
zinc-coated, zinc-5% aluminum-mischmetal alloy-coated or
indicated below, of the sum of the strengths of the steel wires,
aluminum clad steel wires.
calculated from their specified nominal wire diameter and the
appropriate specified minimum stress at
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:B500/B500M–10 Designation: B500/B500M – 12
Standard Specification for
Metallic Coated or Aluminum Clad Stranded Steel Core for
1
Use in Overhead Electrical Conductors
This standard is issued under the fixed designation B500/B500M; 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 7-wire, 19-wire, 37-wire, and 61-wire zinc-coated (galvanized), zinc-5 % aluminum-mischmetal
alloy-coated or aluminum clad stranded steel core intended for use in overhead electrical conductors.
1.2 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.
2. Referenced Documents
2
2.1 ASTM Standards:
B498/B498M Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
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 Zinc5% Aluminum-Mischmetal Alloy-Coated
Steel Core Wire 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
B802/B802M SpecificationforZinc5%Aluminum-MischmetalAlloy-CoatedSteelCoreWireforAluminumConductors,Steel
Reinforced (ACSR)
B803 Specification for High-Strength Zinc5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead
Electrical Conductors
E83 Practice for Verification and Classification of Extensometer Systems Practice for Verification and Classification of
Extensometer Systems
B502 Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 lot—unlessotherwisespecifiedinthecontractororder,alotshallconsistofallcoilsorreelsofstrandofthesamediameter
and unit lengths submitted for inspection at the same time.
3.1.2 production lot—all of the wire spools loaded into a stranding machine that are used to produce a completed strand cable.
4. Ordering Information
4.1 Orders for material under this specification shall include the following information:
4.1.1 Length of each construction,
4.1.2 Constructional description of stranded core (for example, 7 3 0.0943 in. or 19 3 0.0977 in.) (8.1 and 8.2),
4.1.3 The multiple length of stranded core and the total number of multiple lengths per reel, if allowed (8.3 and Section 15),
4.1.4Strength and coating type (Section
4.1.4 Strength and coating type or aluminum clad (Section 8),
4.1.5 Direction of lay of outer layer (Section 7),
1
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.05 on Conductors
of Ferrous Metals.
Current edition approved Oct.April 1, 2010.2012. Published November 2010.May 2012. Originally approved in 1969. Last previous edition approved in 20092010 as
B500/B500M – 109. DOI: 10.1520/B0500_B0500M-102.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
B500/B500M – 12
4.1.6 Packaging (Section 15), and
4.1.7 Place of inspection (Section 13).
5. Material
5.1 The coated or aluminum clad steel wire used in the production of the stranded core shall, prior to stranding, meet all of the
requirements of the appropriate specification that follows:
5.1.1 Specification B498/B498M,
5.1.2 Specification B606,
5.1.3 Specification B802/B802M, and
5.1.4 Specification B803.
5.1.5 Specification B957.
5.1.6 Specification B958.
5.1.7 Specification B502.
6. Joints
6.1 There shall be no joints of any kind made in the finished zinc-coated, zinc-5 %
...
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