ASTM B1-95

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: B 1 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
1
Hard-Drawn Copper Wire
This standard is issued under the fixed designation B 1; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope purchase order for direct procurement by agencies of the U. S.
Government (S1, S2, and S3).
1.1 This specification covers hard-drawn round copper wire
for electrical purposes.
4. Materials and Manufacture
1.2 The SI values for density and resistivity are to be
regarded as the standard. For all other properties the inch- 4.1 The material shall be copper of such quality and purity
pound values are to be regarded as the standard and the SI units that the finished product shall have the properties and charac-
may be approximate. teristics prescribed in this specification.
1.3 The hazard statement pertains only to Section 6, Test
NOTE 1—Specification B 49 defines the materials suitable for use.
Methods, of this specification. This standard does not purport
to address all of the safety concerns, if any, associated with its 4.2 Copper bars of special qualities, forms, or types, as may
use. It is the responsibility of the user of this standard to be agreed upon between the manufacturer and the purchaser,
establish appropriate safety and health practices and deter- and which will conform to the requirements prescribed in this
mine the applicability of regulatory limitations prior to use. specification may also be used.
2. Referenced Documents
5. General Requirements (see Section 8)
2.1 ASTM Standards:
5.1 Tensile Strength and Elongation—The wire shall con-
B 49 Specification for Copper Redraw Rod for Electrical
form to the requirements as to tensile strength and elongation
2
Purposes
prescribed in Table 1 (Explanatory Note 1 and Note 2). For
B 193 Test Method for Resistivity of Electrical Conductor
wire whose nominal diameter is more than 0.001 in. (1 mil)
3
Materials
(0.025 mm) greater than a size listed in Table 1 and less than
2.2 National Institute of Standards and Technology:
that of the next larger size, the requirements of the next larger
4
NBS Handbook 100 —Copper Wire Tables
size shall apply.
3. Ordering Information 5.2 Joints—No joints shall be made in the completed wire
(Explanatory Note 3). Joints in the wire and rods made prior to
3.1 Orders for material under this specification shall include
final drawing shall be in accordance with the best commercial
the following information:
practice. Tests on a specimen containing a joint shall show at
3.1.1 Quantity of each size,
least 95 % of the tensile strength given in Table 1. Elongation
3.1.2 Wire size: diameter in inches (5.4 and Table 1),
tests shall not be made on a specimen containing a joint.
3.1.3 Type of copper, if special (Section 4),
5.3 Resistivity—The electrical resistivity at 20°C shall not
3.1.4 Whether certification of resistivity of rod stock is
exceed the following values:
acceptable instead of resistivity tests on the finished wire (6.2),
3.1.5 Package size (8.1),
Nominal Diameter, in. Resistivity at 20°C,
3.1.6 Special package marking, if required, and
2
V·lb/mile
3.1.7 Place of inspection (7.1).
0.460 to 0.325, incl 900.77
3.2 In addition, Supplementary Requirements shall apply
Under 0.325 to 0.0403, incl 910.15
only when specified by the purchaser in the inquiry, contract, or
5.4 Dimensions and Permissible Variations—The wire sizes
shall be expressed as the diameter of the wire in decimal
1
This specification is under the jurisdiction of ASTM Committee B-1 on
fractions of an inch to the nearest 0.1 mil (0.0001 in.) (0.0025
Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on
mm) (Explanatory Note 4). Within the range of diameters
Conductors of Copper and Copper Alloys.
given in Table 1, the wire shall not vary from the specified
Current edition approved April 15, 1995. Published June 1995. Originally
published as B 1 – 09. Last previous edition B1–90. diameter by more than plus and minus 1 %, expressed to the
2
Annual Book of ASTM Standards, Vol 02.01.
nearest 0.1 mil (0.0001 in.).
3
Annual Book of ASTM Standards, Vol 02.03.
4
5.5 Finish—The wire shall be free of all imperfections not
Available from the National Technical Information Service, 5285 Port Royal
Road, Springfield, VA 22161. consistent with the best commercial practice.
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