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This specification establishes the general requirements common to wrought copper and copper alloy wires. The materials for manufacture shall be a cast bar, billet, rod, or other form of such purity and soundness as to be suitable for processing by hot working, cold working, and subsequent annealing to produce finished products that meet the specified temper properties and have a uniform wrought structure. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (diameter, thickness, specific and stock lengths, width, straightness, and edge contour), mechanical (tensile, yield and bend strengths, elongation, and Rockwell hardness), electrical (resistivity and conductivity), chemical composition, and grain size requirements. In the event of conflict between this specification and the individual casting product specifications, the requirements of the casting specification shall take precedence.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
12.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.
Rounded Unit for Observed
nearest unit in the last
nearest ksi [5 MPa]
Below 5 %
nearest multiple of 0.5 %
5 % and over
nearest 1 %
Under 0.060 mm
nearest multiple of 0.005 mm
0.060 mm and over
nearest 0.01 mm
1.1 This specification establishes requirements common to wrought copper and copper alloy wire and shall apply to Specifications B16/B16M, B99/B99M, B134/B134M, B159/B159M, B197/B197M, B206/B206M, B272, B301/B301M, B453/B453M, B967/B967M, and B974/B974M to the extent referenced therein.
1.3 Units—Values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, SI units are shown in brackets. 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.
1.4 The following safety hazard caveat pertains only to the test methods described in 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 to determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines
B99/B99M Specification for Copper-Silicon Alloy Wire for General Applications
B134/B134M Specification for Brass Wire
B159/B159M Specification for Phosphor Bronze Wire
B193 Test Method for Resistivity of Electrical Conductor Materials
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B197/B197M Specification for Copper-Beryllium Alloy Wire
B206/B206M Specification for Copper-Nickel-Zinc (Nickel Silver) Wire and Copper-Nickel Alloy Wire
B272 Specification for Copper Flat Products with Finished (Rolled or Drawn) Edges (Flat Wire and Strip)
B301/B301M Specification for Free-Cutting Copper Rod, Bar, Wire, and Shapes
B453/B453M Specification for Copper-Zinc-Lead Alloy (Leaded-Brass) Rod, Bar, and Shapes
B846 Terminology for Copper and Copper Alloys
B900 Practice for Packaging of Copper and Copper Alloy Mill Products for U.S. Government Agencies
B967/B967M Specification for Copper-Zinc-Tin-Bismuth Alloy Rod, Bar and Wire
B974/B974M Specification for Free-Cutting Bismuth Brass Rod, Bar and Wire
E3 Guide for Preparation of Metallographic Specimens
E8/E8M Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)
E75 Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys
E112 Test Methods for Determining Average Grain Size
E118 Test Methods for Chemical Analysis of Copper-Chromium Alloys
E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
E581 Test Methods for Chemical Analysis of Manganese-Copper Alloys
ICS Number Code 77.150.30 (Copper products)
UNSPSC Code 31152304(Copper or copper alloy wire)