Designation:B121/B121M−16StandardSpecificationforLeadedBrassPlate,Sheet,Strip,andRolledBar1ThisstandardisissuedunderthefixeddesignationB121/B121M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationestablishestherequirementsforleadedbrassplate,sheet,strip,androlledbar.Thefollowingalloysarecovered:NominalComposition,%CopperAlloyPreviouslyUsedUNSNo.2DesignationCopperZincLeadIronC33500263.536.00.5...C34000363.535.51.0...C34200563.534.52.0...C35000...61.537.41.1...C35300461.536.71.8...C35600661.536.02.5...1.2Units—Valuesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.2.ReferencedDocuments2.1ASTMStandards:3B248SpecificationforGeneralRequirementsforWroughtCopperandCopper-AlloyPlate,Sheet,Strip,andRolledBarB248MSpecificationforGeneralRequirementsforWroughtCopperandCopper-AlloyPlate,Sheet,Strip,andRolledBar(Metric)B601ClassificationforTemperDesignationsforCopperandCopperAlloys—WroughtandCastB846TerminologyforCopperandCopperAlloysE8/E8MTestMethodsforTensionTestingofMetallicMa-terialsE112TestMethodsforDeterminingAverageGrainSizeE255PracticeforSamplingCopperandCopperAlloysfortheDeterminationofChemicalCompositionE478TestMethodsforChemicalAnalysisofCopperAlloysE527PracticeforNumberingMetalsandAlloysintheUnifiedNumberingSystem(UNS)3.GeneralRequirements3.1ThefollowingsectionsofSpecificationsB248orB248Mconstituteapartofthisspecification:3.1.1Terminology3.1.2MaterialsandManufacture3.1.3Workmanship,Finish,andAppearance3.1.4Sampling—exc...
