Designation:B974/B974M−16StandardSpecificationforFree-CuttingBismuthBrassRod,BarandWire1ThisstandardisissuedunderthefixeddesignationB974/B974M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationestablishestherequirementsforfree-cuttingbismuthbrassrod,barandwireofUNSAlloyNo.C49250,C49260,C49265,C49340,andC49345suitableforhigh-speedscrewmachinework,orforgeneralapplications.1.2Typically,productmadetothisspecificationisfurnishedasstraightlengths,orcoilswhenrequested.1.3Units—ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B249/B249MSpecificationforGeneralRequirementsforWroughtCopperandCopper-AlloyRod,Bar,ShapesandForgingsB250/B250MSpecificationforGeneralRequirementsforWroughtCopperAlloyWireB846TerminologyforCopperandCopperAlloysE8/E8MTestMethodsforTensionTestingofMetallicMa-terialsE53TestMethodforDeterminationofCopperinUnalloyedCopperbyGravimetryE54TestMethodsforChemicalAnalysisofSpecialBrassesandBronzes(Withdrawn2002)3E62TestMethodsforChemicalAnalysisofCopperandCopperAlloys(PhotometricMethods)(Withdrawn2010)3E92TestMethodsforVickersHardnessandKnoopHard-nessofMetallicMaterialsE478TestMethodsforChemicalAnalysisofCopperAlloysE527PracticeforNumberingMetalsandAlloysintheUnifiedNumberingSystem(UNS)2.2OtherStandards:JISH1068:2005MethodforDeterminationofB...
