ASTM B802/B802M-10(2016)
(Specification)Standard Specification for Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR)
Standard Specification for Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR)
ABSTRACT
This specification covers round, zinc-aluminum mischmetal (Zn-5Al-MM) alloy-coated, steel core wire with three classes of this coating used for mechanical reinforcement in the manufacture of aluminum conductors, steel reinforced. The base metal shall be steel produced by the open-hearth, electric furnace, or basic oxygen process. The steel shall conform to the required chemical composition carbon, manganese, phosphorus, sulfur and silicon. The coated steel core wire shall conform to the required tensile and elongation properties. The wire shall be capable of being wrapped in a close helix around a cylindrical mandrel. For the purpose of calculating mass per unit length, cross sections, etc, the density of the material shall be taken. Wire diamter, mass and permissible variations shall be measured.
SCOPE
1.1 This specification covers round, zinc–5 % aluminum-mischmetal (Zn–5Al–MM) alloy-coated, steel core wire with three classes of Zn–5Al–MM coating used for mechanical reinforcement in the manufacture of aluminum conductors, steel reinforced (ACSR).
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:B802/B802M −10 (Reapproved 2016)
Standard Specification for
Zinc–5% Aluminum-Mischmetal Alloy-Coated Steel Core
Wire for Aluminum Conductors, Steel Reinforced (ACSR)
This standard is issued under the fixed designation B802/B802M; 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 Scope Casting Alloys (Withdrawn 1997)
E1277 Test Method for Analysis of Zinc-5 % Aluminum-
1.1 This specification covers round, zinc–5 % aluminum-
Mischmetal Alloys by ICP Emission Spectrometry
mischmetal (Zn–5Al–MM) alloy-coated, steel core wire with
E29 Practice for Using Significant Digits in Test Data to
three classes of Zn–5Al–MM coating used for mechanical
Determine Conformance with Specifications
reinforcement in the manufacture of aluminum conductors,
2.3 Other Standard:
steel reinforced (ACSR).
GF-1 Standard Practice for Determination of Cerium and
1.2 This specification covers wire of diameter from 0.0500
Lanthanum Compositions in GalfanAlloy (5 %Al-0.04 %
to 0.1900 in. or 1.27 to 4.82 mm, inclusive.
La-0.04 % Ce-Bal SHG Zn)
1.3 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 Abbreviations:
each system may not be exact equivalents; therefore, each
3.1.1 MM—mischmetal.
system shall be used independently of the other. Combining
3.1.2 Zn–5Al–MM—zinc–5 % aluminum mischmetal.
values from the two systems may result in non-conformance
with the standard.
3.2 Definitions:
3.2.1 lot—unless otherwise specified in the contract or
2. Referenced Documents
order, a lot shall consist of all coils of wire of the same
diameter and unit lengths submitted for inspection at the same
2.1 The following documents of the issue in effect on date
time.
of material purchase form a part of this specification to the
3.2.2 Product Code—Defines product coating type, coating
extent referenced herein.
class and strength grade. Two product codes for product
2.2 ASTM Standards:
produced to this specification: Class A Zn–5Al–MM Coated =
A90/A90M Test Method for Weight [Mass] of Coating on
MA2; and Class C Zn–5Al–MM Coated = MC2.
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A370 Test Methods and Definitions for Mechanical Testing
4. Classification
of Steel Products
4.1 The wire is furnished in two classes of coating, ClassA
A751 Test Methods, Practices, and Terminology for Chemi-
or Class C, as specified, in conformance with the requirements
cal Analysis of Steel Products
of Section 10 and Table 1 or Table 2.
B193 Test Method for Resistivity of Electrical Conductor
Materials
5. Ordering Information
B750 Specification for GALFAN
5.1 Orders for material under this specification shall include
E47 Test Methods for Chemical Analysis of Zinc Die-
the following information:
5.1.1 Quantity of each size,
5.1.2 Wire diameter in inches or millimeters (Section 14),
This specification is under the jurisdiction of ASTM Committee B01 on
5.1.3 Product Code (see paragraphs 3.2.2 and 4.1),
Electrical Conductors and is the direct responsibility of Subcommittee B01.05 on
5.1.4 Certification, if required (Section 19),
Conductors of Ferrous Metals.
5.1.5 Test report, if required (Section 19), and
Current edition approved Oct. 1, 2016. Published October 2016. Originally
approved in 1989. Last previous edition approved in 2010 as B802/B802M – 10.
DOI: 10.1520/B0802_B0802M-10R16.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.astm.org.
Standards volume information, refer to the standard’s Document Summary page on Available from International Lead Zinc Research Organization (ILZRO), 1822
the ASTM website. NC Highway 54 East, Suite 120, Durham NC 27713, http://www.ilzro.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B802/B802M−10 (2016)
TABLE 1 Zn-5Al-MM Alloy Coating
7.3.3 Method of Coating Material Analysis—RefertoSpeci-
Area Density of Coating, min, oz/ fication B750. In case of dispute, the results secured by
Specified Diameter of Coated Wire, 2
ft of Uncoated Wire Surface
Practice E1277 shall be the basis of acceptance.
in.
Class A Class C
0.0500 to 0.0599, incl 0.60 1.80
8. Tensile Test
0.0600 to 0.0749, incl 0.65 1.95
0.0750 to 0.0899, incl 0.70 2.10 8.1 The Zn–5Al–MM-coated steel core wire shall conform
0.0900 to 0.1039, incl 0.75 2.25
to the tensile and elongation requirements prescribed in Table
0.1040 to 0.1199, incl 0.80 2.40
4 or Table 5.
0.1200 to 0.1399, incl 0.85 2.55
0.1400 to 0.1799, incl 0.90 2.70
8.2 Tensile tests shall be conducted in accordance with Test
0.1800 to 0.1900, incl 1.00 3.00
Methods and Definitions A370, using the initial settings for
determining stress at 1 % extension given in Table 6 or Table
7 of this specification.
TABLE 2 Zn-5Al-MM Alloy Coating (Metric)
Area Density of Coating, min,
8.3 Test Specimens—The test specimens shall be free of
Specified Diameter of Coated Wire,
g/m of Uncoated Wire Surface
bendsorkinksotherthanthecurvatureresultingfromtheusual
mm
Class A Class C
coiling operations.Any hand straightening necessary to permit
1.27 to 1.52, incl 183 549
insertion of the specimen in the jaws of the testing machine
1.53 to 1.90, incl 198 594
shall be performed by drawing between wood blocks or by
1.91 to 2.28, incl 214 642
2.29 to 2.64, incl 229 687 some other equally satisfactory means.
2.65 to 3.04, incl 244 732
3.05 to 3.55, incl 259 777
9. Wrap Test
3.56 to 4.57, incl 274 822
4.58 to 4.82, incl 305 915
9.1 The material, as represented by the test specimens, shall
not fracture when the Zn–5Al–MM alloy-coated wire is
wrapped at a rate not exceeding 15 turns/min in a close helix
5.1.6 Package Size (Section 20).
of at least eight turns around a cylindrical mandrel with a
diameter equal to two times the specified diameter of the wire
6. Materials and Manufacture
under test, 65%.
6.1 The base metal shall be steel produced by the open-
hearth, electric furnace, or basic oxygen process.
10. Coating Test
6.2 The wire shall be cold drawn and coated with
10.1 The material, as represented by the test specimens,
Zn–5Al–MM alloy to produce the desired properties.
shall conform to the coating requirements of Table 1 or Table
2, for the diameter and class of coating specified.
7. Chemical Composition
10.2 The coating test shall be conducted in accordance with
7.1 The steel shall conform to the requirements prescribed
Test Method A90/A90M.
in Table 3.
7.2 Chemical analysis of the steel shall be conducted in
11. Adherence of Coating Test
accordance with Test Methods, Practices and Terminology
11.1 TheZn–5Al–MMalloy-coatedwireshallbecapableof
A751.
being wrapped in a close helix at a rate not exceeding 15
7.3 The ingot form of zinc-5% aluminum-mischmetal alloy
turns/min around a cylindrical mandrel having a diameter as
shall conform to Specification B750.
prescribedinTable8orTable9,withoutcrackingorflakingthe
7.3.1 For a two-step coating operation where the first
coating to such an extent that any Zn–5Al–MM alloy can be
coating is zinc (hot-dip galvanized or electrogalvanized), the
removed by rubbing with the bare fingers.
final bath may have an aluminum content of up to 7.2 %, to
NOTE 1—Loosening or detachment during the adhesion test of
prevent depletion of the aluminum content of the bath.
superficial, small particles of Zn–5Al–MM alloy formed by mechanical
7.3.2 Method of Analysis—The determination of chemical
polishing of the surface of the coated wire shall not be considered cause
composition shall be made in accordance with suitable chemi-
for rejection.
cal (Test Methods E47 for Tin), ICP argon plasma spectromet-
12. Joints
ric (Practice E1277), or other methods. In case of dispute, the
results secured by Practice E1277 shall be the basis of
12.1 No joints shall be made in the finished wire.
acceptance.
12.2 Joints may be made at any stage of processing prior to
final cold drawing by the electric butt-weld or flash or
TABLE 3 Chemical Requirements
flash-welding process.
Element Composition, %
12.3 Welding equipment and procedure shall be such that it
Carbon 0.50 to 0.88
Manganese 0.50 to 1.10 can be demonstrated that the ultimate tensile strength of a
Phosphorus, max 0.035
finished wire specimen containing the welded section shall be
Sulfur, max 0.045
not less than 96 % of the specified minimum stress at 1 %
Silicon 0.10 to 0.35
extension.
B802/B802M−10 (2016)
TABLE 4 Tensile Requirements
Stress at 1 % Extension, min, Ksi Ultimate Tensile Strength, min, Ksi Elongation in 10 in., min, %
Specified Diameter, in.
Class A Class C Class A Class C Class A Class C
0.0500 to 0.0899, incl 190 170 210 190 3.0 3.0
0.0900 to 0.1199, incl 185 165 205 185 3.5 3.0
0.1200 to 0.1399, incl 180 160 205 185 4.0 3.0
0.1400 to 0.1900, incl 170 155 200 180 4.0 4.0
TABLE 5 Tensile Requirements (Metric)
Ultimate Tensile Strength, min,
Stress at 1 % Extension, min, MPa Elongation in 250 mm, min, %
MPa
Specified Diameter, mm
Class A Class C Class A Class C Class A Class
...
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: B802/B802M − 10 B802/B802M − 10 (Reapproved 2016)
Standard Specification for
Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core
Wire for Aluminum Conductors, Steel Reinforced (ACSR)
This standard is issued under the fixed designation B802/B802M; 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*Scope
1.1 This specification covers round, zinc–5 % aluminum-mischmetal (Zn–5Al–MM) alloy-coated, steel core wire with three
classes of Zn–5Al–MM coating used for mechanical reinforcement in the manufacture of aluminum conductors, steel reinforced
(ACSR).
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.
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 ASTM Standards:
A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B193 Test Method for Resistivity of Electrical Conductor Materials
B750 Specification for GALFAN
E47 Test Methods for Chemical Analysis of Zinc Die-Casting Alloys (Withdrawn 1997)
E1277 Test Method for Analysis of Zinc-5 % Aluminum-Mischmetal Alloys by ICP Emission Spectrometry
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
2.3 Other Standard:
GF-1 Standard Practice for Determination of Cerium and Lanthanum Compositions in Galfan Alloy (5 % Al-0.04 % La-0.04 %
Ce-Bal SHG Zn)
3. Terminology
3.1 Abbreviations:
3.1.1 MM—mischmetal.
3.1.2 Zn–5Al–MM—zinc–5 % aluminum mischmetal.
3.2 Definitions:
3.2.1 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.
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 Feb. 1, 2010Oct. 1, 2016. Published February 2010October 2016. Originally approved in 1989. Last previous edition approved in 20082010 as
B802/B802M – 08.B802/B802M – 10. DOI: 10.1520/B0802_B0802M-10. 10.1520/B0802_B0802M-10R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
Available from International Lead Zinc Research Organization (ILZRO), 1822 NC Highway 54 East, Suite 120, Durham NC 27713, http://www.ilzro.org.
*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
B802/B802M − 10 (2016)
3.2.2 Product Code—Defines product coating type, coating class and strength grade. Two product codes for product produced
to this specification: Class A Zn–5Al–MM Coated = MA2; and Class C Zn–5Al–MM Coated = MC2.
4. Classification
4.1 The wire is furnished in two classes of coating, Class A or Class C, as specified, in conformance with the requirements of
Section 10 and Table 1 or Table 2.
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 millimeters (Section 14),
5.1.3 Product Code (see paragraphs 3.2.2 and 4.1),
5.1.4 Certification, if required (Section 19),
5.1.5 Test report, if required (Section 19), and
5.1.6 Package Size (Section 20).
6. Materials and Manufacture
6.1 The base metal shall be steel produced by the open-hearth, electric furnace, or basic oxygen process.
6.2 The wire shall be cold drawn and coated with Zn–5Al–MM alloy to produce the desired properties.
7. Chemical Composition
7.1 The steel shall conform to the requirements prescribed in Table 3.
7.2 Chemical analysis of the steel shall be conducted in accordance with Test Methods, Practices and Terminology A751.
7.3 The ingot form of zinc-5% aluminum-mischmetal alloy shall conform to Specification B750.
7.3.1 For a two-step coating operation where the first coating is zinc (hot-dip galvanized or electrogalvanized), the final bath
may have an aluminum content of up to 7.2 %,7.2 %, to prevent depletion of the aluminum content of the bath.
7.3.2 Method of Analysis—The determination of chemical composition shall be made in accordance with suitable chemical (Test
Methods E47 for Tin), ICP argon plasma spectrometric (Practice E1277), or other methods. In case of dispute, the results secured
by Practice E1277 shall be the basis of acceptance.
7.3.3 Method of Coating Material Analysis—Refer to Specification B750. In case of dispute, the results secured by Practice
E1277 shall be the basis of acceptance.
8. Tensile Test
8.1 The Zn–5Al–MM-coated steel core wire shall conform to the tensile and elongation requirements prescribed in Table 4 or
Table 5.
8.2 Tensile tests shall be conducted in accordance with Test Methods and Definitions A370, using the initial settings for
determining stress at 1 % extension given in Table 6 or Table 7 of this specification.
8.3 Test Specimens—The test specimens shall be free of bends or kinks other than the curvature resulting from the usual coiling
operations. Any hand straightening necessary to permit insertion of the specimen in the jaws of the testing machine shall be
performed by drawing between wood blocks or by some other equally satisfactory means.
TABLE 1 Zn-5Al-MM Alloy Coating
Area Density of Coating, min, oz/
Specified Diameter of Coated Wire, 2
ft of Uncoated Wire Surface
in.
Class A Class C
Area Density of Coating, min, oz/
Specified Diameter of Coated Wire,
ft of Uncoated Wire Surface
in.
Class A Class C
0.0500 to 0.0599, incl 0.60 1.80
0.0600 to 0.0749, incl 0.65 1.95
0.0750 to 0.0899, incl 0.70 2.10
0.0900 to 0.1039, incl 0.75 2.25
0.1040 to 0.1199, incl 0.80 2.40
0.1200 to 0.1399, incl 0.85 2.55
0.1400 to 0.1799, incl 0.90 2.70
0.1800 to 0.1900, incl 1.00 3.00
B802/B802M − 10 (2016)
TABLE 2 Zn-5Al-MM Alloy Coating (Metric)
Area Density of Coating, min,
Specified Diameter of Coated Wire,
g/m of Uncoated Wire Surface
mm
Class A Class C
Area Density of Coating, min,
Specified Diameter of Coated Wire,
g/m of Uncoated Wire Surface
mm
Class A Class C
1.27 to 1.52, incl 183 549
1.53 to 1.90, incl 198 594
1.91 to 2.28, incl 214 642
2.29 to 2.64, incl 229 687
2.65 to 3.04, incl 244 732
3.05 to 3.55, incl 259 777
3.56 to 4.57, incl 274 822
4.58 to 4.82, incl 305 915
TABLE 3 Chemical Requirements
Element Composition,
%
0.50 to 0.88
Carbon
0.50 to 1.10
Manganese
0.035
Phosphorus, max
0.045
Sulfur, max
0.10 to 0.35
Silicon
TABLE 3 Chemical Requirements
Element Composition, %
Carbon 0.50 to 0.88
Manganese 0.50 to 1.10
Phosphorus, max 0.035
Sulfur, max 0.045
Silicon 0.10 to 0.35
9. Wrap Test
9.1 The material, as represented by the test specimens, shall not fracture when the Zn–5Al–MM alloy-coated wire is wrapped
at a rate not exceeding 15 turns/min in a close helix of at least eight turns around a cylindrical mandrel with a diameter equal to
two times the specified diameter of the wire under test, 65 %.
10. Coating Test
10.1 The material, as represented by the test specimens, shall conform to the coating requirements of Table 1 or Table 2, for
the diameter and class of coating specified.
10.2 The coating test shall be conducted in accordance with Test Method A90/A90M.
11. Adherence of Coating Test
11.1 The Zn–5Al–MM alloy-coated wire shall be capable of being wrapped in a close helix at a rate not exceeding 15 turns/min
around a cylindrical mandrel having a diameter as prescribed in Table 8 or Table 9, without cracking or flaking the coating to such
an extent that any Zn–5Al–MM alloy can be removed by rubbing with the bare fingers.
NOTE 1—Loosening or detachment during the adhesion test of superficial, small particles of Zn–5Al–MM alloy formed by mechanical polishing of
the surface of the coated wire shall not be considered cause for rejection.
12. Joints
12.1 No joints shall be made in the finished wire.
12.2 Joints may be made at any stage of processing prior to final cold drawing by the electric butt-weld or flash or flash-welding
process.
12.3 Welding equipment and procedure shall be such that it can be demonstrated that the ultimate tensile strength of a finished
wire specimen containing the welded section shall be not less than 96 % of the specified minimum stress at 1 % extension.
B802/B802M − 10 (2016)
TABLE 4 Tensile Requirements
Stress at 1 % Extension, min, Ksi Ultimate Tensile Strength, min, Ksi Elongation in 10 in., min, %
Specified Diameter, in.
Class A Class C Class A Class C Class A Class C
Stress at 1 % Extension, min, Ksi Ultimate Tensile Strength, min, Ksi Elongation in 10 in., min, %
Specified Diameter, in.
Class A Class C Class A Class C Class A Class C
0.0500 to 0.0899, incl 190 170 210 190 3.0 3.0
0.0900 to 0.1199, incl 185 165 205 185 3.5 3.0
0.1200 to 0.1399, incl 180 160 205 185 4.0 3.0
0.1400 to 0.1900, incl 170 155 200 180 4.0 4.0
TABLE 5 Tensile Requirements (Metric)
Ultimate Tensile Strength, min,
Stress at 1 % Extension, min, MPa Elongation in 250 mm, min, %
MPa
Specified Diameter, mm
Class A Class C Class A Class C Class A Class C
Ultimate Tensile Strength, min,
Stress at 1 % Extension, min, MPa Elongation in 250 mm, min, %
Specified Diameter, mm MPa
Class A Class
...
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