ASTM_B_250_-_B_250M_-_16.pdf

Designation:B250/B250M16Standard Specification forGeneral Requirements for Wrought Copper Alloy Wire1This standard is issued under the fixed designation B250/B250M;the number immediately following the designation indicates the yearof 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification establishes requirements common towrought copper and copper alloy wire and shall apply toSpecifications B16/B16M,B99/B99M,B134/B134M,B159/B159M,B197/B197M,B206/B206M,B272,B301/B301M,B453/B453M,B967/B967M,and B974/B974M to the extentreferenced therein.1.2 The chemical composition,physical and mechanicalproperties,and all other requirements not included in thisspecification shall be prescribed in the product specification.1.3 UnitsValues stated in either SI units or inch-poundunits are to be regarded separately as standard.Within the text,SI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result in non-conformance with thestandard.1.4 The following safety hazard caveat pertains only to thetest methods described in this specification.This standard doesnot purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand to determine the applicability of regulatory limitationsprior to use.2.Referenced Documents2.1 ASTM Standards:2B16/B16M Specification for Free-Cutting Brass Rod,Barand Shapes for Use in Screw MachinesB99/B99M Specification for Copper-Silicon Alloy Wire forGeneral ApplicationsB134/B134M Specification for Brass WireB159/B159M Specification for Phosphor Bronze WireB193 Test Method for Resistivity of Electrical ConductorMaterialsB194 Specification for Copper-BerylliumAlloy Plate,Sheet,Strip,and Rolled BarB197/B197M Specification for Copper-Beryllium AlloyWireB206/B206M Specification for Copper-Nickel-Zinc(NickelSilver)Wire and Copper-Nickel Alloy WireB272 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 ShapesB453/B453M Specification for Copper-Zinc-Lead Alloy(Leaded-Brass)Rod,Bar,and ShapesB846 Terminology for Copper and Copper AlloysB900 Practice for Packaging of Copper and Copper AlloyMill Products for U.S.Government AgenciesB967/B967M Specification for Copper-Zinc-Tin-BismuthAlloy Rod,Bar and WireB974/B974M Specification for Free-Cutting Bismuth BrassRod,Bar and WireE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE54 Test Methods for Chemical Analysis of Special Brassesand Bronzes(Withdrawn 2002)3E62 Test Methods for Chemical Analysis of Copper andCopperAlloys(Photometric Methods)(Withdrawn 2010)3E75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys(Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE118 Test Methods for Chemical Analysis of Copper-Chromium Alloys(Withdrawn 2010)3E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys(Withdrawn 2010)31This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar,Wire,Shapes and Forgings.Current edition approved Oct.1,2016.Published October 2016.Originallyapproved in 1951.Last previous edition approved in 2013 as B250/B250M13.DOI:10.1520/B0250_B0250M-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper AlloysE581 Test Methods for Chemical Analysis of Manganese-Copper Alloys3.Terminology3.1 For definitions of terms related to copper and copperalloys,refer to Terminology B846.4.Materials and Manufacture4.1 Materials:4.1.1 The materials of manufacture shall be a form(cast bar,billet,rod,etc.)of the copper or copper alloy covered by theproduct specification,of such