ASTM B910/B910M-02
(Specification)Standard Specification for Annealed Copper-Clad Steel Wire
Standard Specification for Annealed Copper-Clad Steel Wire
SCOPE
1.1 This specification covers bare round copper-clad steel for the following applications: electrical, electronic, grounding, telecommunications, and other applications.
1.2 Four conductivities are covered as follows: 21, 30, 40, and 70 %.
1.3 Temper is designated as annealed.
1.4 The values stated in inch-pound or SI units are to be regarded separately as the 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, 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.
1.5 The following precautionary statement pertains to the test method portion only, Section 7, of this specification: This standard does not purport to address all of the safety concerns, if any associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: B 910/B 910M – 02
Standard Specification for
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Annealed Copper-Clad Steel Wire
This standard is issued under the fixed designation B 910/B 910M; 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 (e) indicates an editorial change since the last revision or reapproval.
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1. Scope NBS Handbook 100 - Copper Wire Tables
1.1 This specification covers bare round copper-clad steel
3. Ordering Information
for the following applications: electrical, electronic, grounding,
3.1 Orders for material under this specification shall include
telecommunications, and other applications.
the following information:
1.2 Four conductivities are covered as follows: 21, 30, 40,
3.1.1 Quantity of each size;
and 70 %.
3.1.2 Wire size: diameter in inches (see 5.2);
1.3 Temper is designated as annealed.
3.1.3 Conductivity (see Table 1);
1.4 The values stated in inch-pound or SI units are to be
3.1.4 Wire to be used for redraw or not;
regarded separately as the standard. Each system shall be used
3.1.5 Packaging and shipping (see 10);
independently of the other. Combining values from the two
3.1.6 Place of inspection (see 6.1).
systems may result in nonconformance with the specification.
For conductor sizes designated by AWG, the requirements in SI
4. Material
units have been numerically converted from corresponding
4.1 The wire shall consist of a core of homogeneous
values stated or derived in inch-pound units. For conductor
open-hearth, electric-furnace, or basic-oxygen steel with a
sizes designated by SI units only, the requirements are stated or
continuous outer cladding of copper thoroughly bonded to the
derived in SI units.
core throughout and shall be of such quality as to meet the
1.5 The following precautionary statement pertains to the
requirements of this specification.
test method portion only, Section 7, of this specification: This
standard does not purport to address all of the safety concerns,
5. General Requirements
if any associated with its use. It is the responsibility of the user
5.1 Tensile Strength and Elongation—The copper-clad steel
of this standard to establish appropriate safety and health
wire shall conform to the tensile strength requirements of Table
practices and determine the applicability of regulatory limita-
2. Because there are many carbon steel and copper thickness
tions prior to use.
combinations available, the desired tensile strength should be
agreed upon between the purchaser and manufacturer prior to
2. Referenced Documents
placing an order. The elongation shall be 15.0 % minimum for
2.1 The following documents of the issue in effect on the
all diameters listed in 5.2.
date of material purchase form a part of this specification to the
5.2 Dimensions—The wire size range for this specification
extent referenced herein:
shall be from 0.0253 (0.643 mm) to 0.2294 in. (5.827 mm)
2.2 ASTM Standards:
diameter (see Note 1).
B 193 Test Method for Resistivity of Electrical Conductor
2 5.2.1 Permissible Variations—The wire sizes shall meet the
Materials
following tolerances:
B 258 Specification for Standard Nominal Diameters and
5.2.1.1 For diameters 0.1000 in. ( 2.54 mm) and over, the
Cross-Sectional Areas of AWG Sizes of Solid Round Wires
2 wire shall not vary from the specified diameter by more than 6
Used as Electrical Conductors
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1 ⁄2 %, expressed to the nearest 0.0001 in. (0.003 mm).
2.3 NIST Document:
5.2.1.2 For diameters under 0.1000 in. (2.54 mm) and above
0.0253 in. (0.643 mm), the wire shall not vary from the
specified diameter by more than 6 1 %, expressed to the
nearest 0.0001 in. (0.003 mm).
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This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.06 on NOTE 1—The values of the wire diameters in 5.2 are given to the
Composite Conductors.
Current edition approved Oct. 10, 2002. Published November 2002. Originally
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published as B 910/B 910M-00. Last previous edition B 910/B 910M-00. Available from National Institute of Standards and Technology (NIST), 100
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Annual Book of ASTM Standards, Vol 02.03. Bureau Dr., Stop 3460, Gaithersburg, MD 20899-3460.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B 910/B 910M – 02
TABLE 1 Density (nom.) and Resistivity, (max.), at 20°C (Nominal specified in Test Method B 193. The use of five significant figures is
Conductivity, Minimum Conductivity, and Nominal Density for
required for complete reversible conversion from one set of resistivity
Reference Only)
units to another.
Maximum Resistivity
6. Inspection
Nom
...
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