Standard Specification for Metallic Coated 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 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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B500/B500M – 10
Standard Specification for
Metallic Coated Stranded Steel Core for Use in Overhead
1
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* B803 Specification for High-Strength Zinc−5 %
Aluminum-Mischmetal Alloy-Coated Steel Core Wire for
1.1 This specification covers 7-wire, 19-wire, 37-wire, and
Use in Overhead Electrical Conductors
61-wire zinc-coated (galvanized), zinc-5 % aluminum-
E83 Practice for Verification and Classification of Exten-
mischmetalalloy-coatedstrandedsteelcoreintendedforusein
someter Systems
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.
2. Referenced Documents 3.1.2 production lot—all of the wire spools loaded into a
2
stranding machine that are used to produce a completed strand
2.1 ASTM Standards:
cable.
B498/B498M Specification for Zinc-Coated (Galvanized)
SteelCoreWireforUseinOverheadElectricalConductors
4. Ordering Information
B957 Specification for Extra-High-Strength and Ultra-
4.1 Ordersformaterialunderthisspecificationshallinclude
High-Strength Zinc-Coated (Galvanized) Steel Core Wire
the following information:
for Overhead Electrical Conductors
4.1.1 Length of each construction,
B958 Specification for Extra-High-Strength and Ultra-
4.1.2 Constructional description of stranded core (for ex-
High-Strength Class A Zinc−5% Aluminum-Mischmetal
ample, 7 3 0.0943 in. or 19 3 0.0977 in.) (8.1 and 8.2),
Alloy-Coated Steel Core Wire for Use in Overhead Elec-
4.1.3 The multiple length of stranded core and the total
trical Conductors
numberofmultiplelengthsperreel,ifallowed(8.3andSection
B606 Specification for High-Strength Zinc-Coated (Galva-
15),
nized) Steel Core Wire for Aluminum and Aluminum-
4.1.4 Strength and coating type (Section 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
Mischmetal Alloy-Coated Steel Core Wire for Aluminum
4.1.7 Place of inspection (Section 13).
Conductors, Steel Reinforced (ACSR)
5. Material
1
This specification is under the jurisdiction of ASTM Committee B01 on 5.1 The coated steel wire used in the production of the
Electrical Conductors and is the direct responsibility of Subcommittee B01.05 on
stranded core shall, prior to stranding, meet all of the require-
Conductors of Ferrous Metals.
ments of the appropriate specification that follows:
Current edition approved Oct. 1, 2010. Published November 2010. Originally
5.1.1 Specification B498/B498M,
approved in 1969. Last previous edition approved in 2009 as B500/B500M–09.
DOI: 10.1520/B0500_B0500M-10.
5.1.2 Specification B606,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.3 Specification B802/B802M, and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.4 Specification B803.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.1.5 Specification B957.
*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 – 10
5.1.6 Specification B958. be taken as that percentage according to the number of wires,
indicated below, of the sum of the strengths of the steel wires,
6. Joints
calculated from their specified nominal wire diameter and the
6.1 Thereshallbenojointsofanykindmadeinthefinished
appropriate specified minimum stress at 1% extension or
zinc-coated,zinc-5%aluminum-mischmetalalloy-coatedsteel
ultimate strength given in Specifications B498/B498M, B606,
wires.
B802/B802M, B803, B957,or B958:
72wirestrand—96%ofsumofcomponents
7. Stranding
192wirestrand—93%ofsumofcomponents
7.1 The lay length of the 6-wire layer of 7 and 19-wire
372wirestrand—91%ofsumofcomponents
stranded core shall be not less than 16 or more than 26 times
the outside d
...

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–09 Designation: B500/B500M – 10
Standard Specification for
Metallic Coated Stranded Steel Core for Use in Overhead
1
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 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
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),
4.1.4 Strength and coating type (Section 8),
4.1.5 Direction of lay of outer layer (Section 7),
4.1.6 Packaging (Section 15), and
4.1.7 Place of inspection (Section 13).
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 March 15, 2009. PublishedApril 2009. Originally approved in 1969. Last previous edition approved in 2002 as B500/B500M–98 (2002). DOI:
10.1520/B0500_B0500M-09.
Current edition approved Oct. 1, 2010. Published November 2010. Originally approved in 1969. Last previous edition approved in 2009 as B500/B500M – 09. DOI:
10.1520/B0500_B0500M-10.
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 – 10
5. Material
5.1 The coated 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.
6.
5.1.5 Specification B957.
5.1.6 Specification B958.
6. Joints
6.1 There shall be no joints of any kind made in the finished zinc-coated, zinc-5 % aluminum-mischmetal alloy-coated steel
wires.
7. Stranding
7.1 The lay length of the 6-wire layer of 7 and 19-wire stranded core shall be n
...

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