ASTM B498/B498M-08
(Specification)Standard Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
Standard Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
ABSTRACT
This specification covers round, zinc-coated (galvanized), steel core wire with three classes of zinc coating used for mechanical reinforcement in the manufacture of aluminum conductors, steel-reinforced (ACSR). The wire is furnished in three classes of coating, namely: Class A, Class B, and Class C. The base metal shall be steel produced by the open-hearth, electric-furnace, or basic-oxygen process. The wire shall be cold drawn and coated with zinc to produce the desired properties and the the slab zinc used for coating shall be high-grade or better. The steel shall conform to the chemical composition requirements prescribed for carbon, manganese, phosphorus, sulfur, and silicon, as determined by chemical analysis. The following tests shall be performed: (1) tensile test to determine the mechanical properties such as ultimate tensile strength, elongation, and stress at extension, (2) wrap test, (3) coating test to determine conformity to the specified diameter and area density requirements, and (4) coating adherence test. Requirements for joints which may be made by electric butt-weld or flash-welding are detailed. The density and resistivity of galvanized steel wire are prescribed for the purposes of calculating mass per unit length, cross-sections, and so forth.
SCOPE
1.1 This specification covers round, zinc-coated, steel core wire with two classes of zinc coating for use in overhead electrical conductors.
1.2 This specification covers wire of diameter from 0.0500 to 0.1900 in. or 1.27 to 4.82 mm, inclusive.
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.
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Designation:B498/B498M −08
StandardSpecification for
Zinc-Coated (Galvanized) Steel Core Wire for Use in
1
Overhead Electrical Conductors
This standard is issued under the fixed designation B498/B498M; 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* 3.1.1 lot—unless otherwise specified in the contract or
order, a lot shall consist of all coils of wire of the same
1.1 This specification covers round, zinc-coated, steel core
diameter and unit lengths submitted for inspection at the same
wire with two classes of zinc coating for use in overhead
time.
electrical conductors.
3.1.2 Product Code—Defines product coating type, coating
1.2 This specification covers wire of diameter from 0.0500
class and strength grade. Two product codes for product
to 0.1900 in. or 1.27 to 4.82 mm, inclusive.
produced to this specification: Class A Zinc Coated (Code
1.3 The values stated in either SI units or inch-pound units
GA2); and Class C Zinc Coated (Code GC2).
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
4. Classification
system shall be used independently of the other. Combining
4.1 The wire is furnished in two classes of coating, ClassA
values from the two systems may result in non-conformance
or Class C, as specified, in conformance with the requirements
with the standard.
of Section 10 and Table 6 or Table 7.
2. Referenced Documents
5. Ordering Information
2.1 The following documents of the issue in effect on date
5.1 Orders for material under this specification shall include
of material purchase form a part of this specification to the
extent referenced herein. the following information:
2 5.1.1 Quantity of each size,
2.2 ASTM Standards:
5.1.2 Wire diameter in inches or millimeters (Section 14),
A90/A90M Test Method for Weight [Mass] of Coating on
5.1.3 Product Code (see 3.1.2 and 4.1),
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
5.1.4 Certification, if required (Section 19),
A370 Test Methods and Definitions for Mechanical Testing
5.1.5 Test report, if required (Section 19), and
of Steel Products
5.1.6 Package size (Section 20).
A751 Test Methods, Practices, and Terminology for Chemi-
5.1.7 Order Example: Five multiple lengths of 12 000 ft.
cal Analysis of Steel Products
each, 0.1327 in. GA2 wire, packaged onto wooden nonreturn-
B6 Specification for Zinc
able reels, with certified test report.
B193 Test Method for Resistivity of Electrical Conductor
Materials
6. Materials and Manufacture
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications 6.1 The base metal shall be steel produced by the open-
hearth, electric-furnace, or basic-oxygen process.
3. Terminology
6.2 The wire shall be cold drawn and coated with zinc to
3.1 Definitions:
produce the desired properties.
6.3 The slab zinc used for coating shall be high-grade or
1
This specification is under the jurisdiction of ASTM Committee B01 on
better, conforming to Specification B6.
Electrical Conductors and is the direct responsibility of Subcommittee B01.05 on
Conductors of Ferrous Metals.
Current edition approved Nov. 1, 2008. Published December 2008. Originally 7. Chemical Composition
published as B498 – 69 to replace B245 and B261. Last previous edition approved
7.1 The steel shall conform to the requirements prescribed
in 2002 as B498/B498M – 98 (2002). DOI: 10.1520/B0498_B0498M-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or in Table 1.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.2 Chemical analysis shall be conducted in accordance
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. with Test Methods, Practices, and Terminology A751.
*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
1
---------------------- Page: 1 ----------------------
B498/B498M−08
TABLE 1 Chemical Requirements
specimen containing the welded section shall not be less than
Element Composition, % 96 % of the specified minimum stress at 1 % extension.
Carbon 0.50 to 0.88
12.4 A welded section shall not be required to meet the
Manganese 0.50 to 1.10
Phosphorus, max 0.035 stress at 1 % extension, elongation, and wrap tests.
Sulfur, max 0.045
Silicon 0.10 to 0.35
13. Density and Resistivity
13.1 For the purposes of calculating mass per unit length,
cross-sections, and so forth, the density of galvanized steel
3 3
8. Tensile Test w
...
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:B 498/B 498M–98 (Reapproved 2002) Designation: B 498/B 498M – 08
Standard Specification for
Zinc-Coated (Galvanized) Steel Core Wire for Aluminum
Conductors, Steel Reinforced (ACSR)Zinc-Coated
(Galvanized) Steel Core Wire for Use in Overhead Electrical
1
Conductors
This standard is issued under the fixed designation B 498/B 498M; 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, zinc-coated, steel core wire with threetwo classes of zinc coating used for mechanical
reinforcement use in the manufacture of aluminum conductors, steel-reinforced (ACSR). overhead electrical conductors.
1.2 This specification covers wire of diameter from 0.0500 to 0.1900 in. or 1.601.27 to 4.804.82 mm, inclusive.
1.3 The values stated in inch-pound either SI units or SIinch-pound units are to be regarded separately as standard. The values
stated in each system aremay 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 this specification. the standard.
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
2.2 ASTM Standards:
A 90/A 90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B 6 Specification for Zinc
B 193 Test Method for Resistivity of Electrical Conductor Materials
E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3. Terminology
3.1 Definition:
3.1.1 lot—unless otherwise specified in the contract or order, a lot shall consist of all coils of wire of the same diameter and
unit lengths submitted for inspection at the same time.
3.1.2 Product Code—Defines product coating type, coating class and strength grade. Two product codes for product produced
to this specification: Class A Zinc Coated (Code GA2); and Class C Zinc Coated (Code GC2).
4. Classification
4.1 The wire is furnished in threetwo classes of coating, Class A, Class B,A or Class C, as specified, in conformance with the
requirements of Section 10 and Table 1Table 6 or Table 2Table 7.
5. Ordering Information
5.1 Orders for material under this specification shall include the following information:
5.1.1 Quantity of each size,
5.1.2 Wire diameter in inches or millimetrers (Section 14),
5.1.3Class of coating (see
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 Sept. 10, 1998. Published November 1998. Originally published as B498–69 to replace B245 and B261. Last previous edition B498–93.
Current edition approved Nov. 1, 2008. Published December 2008. Originally published as B 498 – 69 to replace B 245 and B 261. Last previous edition approved in 2002
as B 498/B 498M – 98 (2002).
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 01.06.volume information, refer to the standard’s Document Summary page on the ASTM website.
*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.
1
---------------------- Page: 1 ----------------------
B 498/B 498M – 08
TABLE 3 Tensile Requirements (Metric)
Stress at 1 % Extension, min, MPa Ultimate Tensile Strength, min, Elongation in 250 mm, min, %
MPa
Specified Diameter, mm
Class Class Class Class Class Class
A C A C A C
1.27 to 2.28, incl 1310 1170 1450 1310 3.0 3.0
2.29 to 3.04, incl 1280 1140 1410 1280 3.5 3.0
3.05 to 3.55, incl 1240 1100 1410 1280 4.0 3.0
3.56 to 4.82, incl 1170 1070 1380 1240 4.0 4.0
TABLE 5 Initial Settings for Determining Stress at 1 % Extension
(Metric)
Specified Diameter, Initial Stress, Initial Setting of Extensometer,
mm MPa mm/mm
1.27 to 2.28, incl 100 0.0005 (0.05 % extension)
2.29 to 3.04, incl 190 0.001
...
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:B 498/B 498M–98 (Reapproved 2002) Designation: B 498/B 498M – 08
Standard Specification for
Zinc-Coated (Galvanized) Steel Core Wire for Aluminum
Conductors, Steel Reinforced (ACSR)Zinc-Coated
(Galvanized) Steel Core Wire for Use in Overhead Electrical
1
Conductors
This standard is issued under the fixed designation B 498/B 498M; 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, zinc-coated, steel core wire with threetwo classes of zinc coating used for mechanical
reinforcement use in the manufacture of aluminum conductors, steel-reinforced (ACSR). overhead electrical conductors.
1.2 This specification covers wire of diameter from 0.0500 to 0.1900 in. or 1.601.27 to 4.804.82 mm, inclusive.
1.3 The values stated in inch-pound either SI units or SIinch-pound units are to be regarded separately as standard. The values
stated in each system aremay 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 this specification. the standard.
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
2.2 ASTM Standards:
A 90/A 90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B6 Specification for Zinc
B 193 Test Method for Resistivity of Electrical Conductor Materials Test Method for Resistivity of Electrical Conductor
Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3. Terminology
3.1 Definition:
3.1.1 lot—unless otherwise specified in the contract or order, a lot shall consist of all coils of wire of the same diameter and
unit lengths submitted for inspection at the same time.
3.1.2 Product Code—Defines product coating type, coating class and strength grade. Two product codes for product produced
to this specification: Class A Zinc Coated (Code GA2); and Class C Zinc Coated (Code GC2).
4. Classification
4.1 The wire is furnished in threetwo classes of coating, Class A, Class B,A or Class C, as specified, in conformance with the
requirements of Section 10 and Table 1Table 6 or Table 2Table 7.
5. Ordering Information
5.1 Orders for material under this specification shall include the following information:
5.1.1 Quantity of each size,
5.1.2 Wire diameter in inches or millimetrers (Section 14),
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 Sept. 10, 1998. Published November 1998. Originally published as B498–69 to replace B245 and B261. Last previous edition B498–93.
Current edition approved Nov. 1, 2008. Published December 2008. Originally published as B 498 – 69 to replace B 245 and B 261. Last previous edition approved in 2002
as B 498/B 498M – 98 (2002).
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 01.06.volume information, refer to the standard’s Document Summary page on the ASTM website.
*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.
1
---------------------- Page: 1 ----------------------
B 498/B 498M – 08
TABLE 3 Tensile Requirements (Metric)
Stress at 1 % Extension, min, MPa Ultimate Tensile Strength, min, Elongation in 250 mm, min, %
MPa
Specified Diameter, mm
Class Class Class Class Class Class
A C A C A C
1.27 to 2.28, incl 1310 1170 1450 1310 3.0 3.0
2.29 to 3.04, incl 1280 1140 1410 1280 3.5 3.0
3.05 to 3.55, incl 1240 1100 1410 1280 4.0 3.0
3.56 to 4.82, incl 1170 1070 1380 1240 4.0 4.0
TABLE 5 Initial Settings for Determining Stress at 1 % Extension
(Metric)
Specified Diameter, Initial Stress, Initial Setting of Extensometer,
mm MPa mm/mm
1.27 to 2.28, incl 100 0.0005 (0.05 % extens
...
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