ASTM B250/B250M-07
(Specification)Standard Specification for General Requirements for Wrought Copper Alloy Wire
Standard Specification for General Requirements for Wrought Copper Alloy Wire
ABSTRACT
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.
SCOPE
1.1 This specification establishes requirements common to wrought copper and copper alloy wire and shall apply to Specifications B 16/B 16M, B 99/B 99M, B 134/B 134M, B 159/B 159M, B 197/B 197M, B 206/B 206M, B 272, B 301/B 301M and B 453/B 453M to the extent referenced therein.
1.2 The chemical composition, physical and mechanical properties, and all other requirements not included in this specification shall be prescribed in the product specification.
1.3 The following safety hazard caveat pertains only to the test methods described in this specification.
1.3.1 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.
1.4 UnitsValues 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.
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Designation:B250/B250M −07
StandardSpecification for
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General Requirements for Wrought Copper Alloy Wire
This standard is issued under the fixed designation B250/B250M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) 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* B193Test Method for Resistivity of Electrical Conductor
Materials
1.1 This specification establishes requirements common to
B194SpecificationforCopper-BerylliumAlloyPlate,Sheet,
wrought copper and copper alloy wire and shall apply to
Strip, and Rolled Bar
Specifications B16/B16M, B99/B99M, B134/B134M, B159/
B197/B197M Specification for Copper-Beryllium Alloy
B159M, B197/B197M, B206/B206M, B272, B301/B301M
Wire
and B453/B453M to the extent referenced therein.
B206/B206MSpecification for Copper-Nickel-Zinc (Nickel
1.2 The chemical composition, physical and mechanical
Silver) Wire and Copper-Nickel Alloy Wire
properties, and all other requirements not included in this
B272Specification for Copper Flat Products with Finished
specification shall be prescribed in the product specification.
(Rolled or Drawn) Edges (Flat Wire and Strip)
1.3 The following safety hazard caveat pertains only to the B301/B301MSpecification for Free-Cutting Copper Rod,
Bar, Wire, and Shapes
test methods described in this specification.
1.3.1 This standard does not purport to address all of the B453/B453M Specification for Copper-Zinc-Lead Alloy
(Leaded-Brass) Rod, Bar, and Shapes
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- B846Terminology for Copper and Copper Alloys
E3Guide for Preparation of Metallographic Specimens
priate safety and health practices and to determine the appli-
cability of regulatory limitations prior to use. E8Test Methods for Tension Testing of Metallic Materials
E8MTestMethodsforTensionTestingofMetallicMaterials
1.4 Units—Values stated in either SI units or inch-pound
3
[Metric] (Withdrawn 2008)
units are to be regarded separately as standard.Within the text,
E18Test Methods for Rockwell Hardness of Metallic Ma-
SI units are shown in brackets. The values stated in each
terials
system may not be exact equivalents; therefore, each system
E18MPractice for Determining the Precision of ASTM
shall be used independently of the other. Combining values
Methods for Analysis and Testing of Industrial and Spe-
from the two systems may result in non-conformance with the
cialty Chemicals E0181
standard.
E29Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
2. Referenced Documents
E54Test Methods for ChemicalAnalysis of Special Brasses
2
2.1 ASTM Standards:
3
and Bronzes (Withdrawn 2002)
B16/B16MSpecification for Free-Cutting Brass Rod, Bar
E62Test Methods for Chemical Analysis of Copper and
and Shapes for Use in Screw Machines
3
CopperAlloys(PhotometricMethods)(Withdrawn2010)
B99/B99MSpecification for Copper-Silicon Alloy Wire for
E75Test Methods for Chemical Analysis of Copper-Nickel
General Applications
3
and Copper-Nickel-Zinc Alloys (Withdrawn 2010)
B134/B134MSpecification for Brass Wire
E112Test Methods for Determining Average Grain Size
B159/B159MSpecification for Phosphor Bronze Wire
E118 Test Methods for Chemical Analysis of Copper-
3
Chromium Alloys (Withdrawn 2010)
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
E121Test Methods for Chemical Analysis of Copper-
3
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Tellurium Alloys (Withdrawn 2010)
Bar, Wire, Shapes and Forgings.
E255Practice for Sampling Copper and Copper Alloys for
Current edition approved Oct. 1, 2007. Published October 2007. Originally
the Determination of Chemical Composition
approved in 1951. Last previous edition approved in 1995 as B250–95. DOI:
10.1520/B0250_B0250M-07.
2
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
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.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
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B250/B250M−07
E478Test Methods for ChemicalAnalysis of CopperAlloys millimetres. The tolerances shall be that shown in Table 1 and
E581Test Methods for
...
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