Designation:B981/B981M−12StandardSpecificationforLowLeadedBrassRod,BarandShapes1ThisstandardisissuedunderthefixeddesignationB981/B981M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationestablishestherequirementsforlowleadedbrassrod,bar,wire,andshapesofanyspecifiedcrosssectionproducedfromCopperAlloysUNSNo.C36300,C36500,C37000,C37100andC37700suitableforhigh-speedscrewmachiningapplications.NOTE1—RefertoSpecificationB124/B124Mwhenpurchasingbarorrodforforgingproduction.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B124/B124MSpecificationforCopperandCopperAlloyForgingRod,Bar,andShapesB249/B249MSpecificationforGeneralRequirementsforWroughtCopperandCopper-AlloyRod,Bar,ShapesandForgingsB250/B250MSpecificationforGeneralRequirementsforWroughtCopperAlloyWireB601ClassificationforTemperDesignationsforCopperandCopperAlloys—WroughtandCastE8/E8MTestMethodsforTensionTestingofMetallicMa-terials3.GeneralRequirements3.1ThefollowingsectionsofSpecificationsB249/B249M(rod,bar,andshapes)andB250/B250M(wroughtcopperalloywire)constituteapartofthisspecification.3.1.1Terminology,3.1.2MaterialsandManufacture,3.1.3Workmanship,Finish,andAppearance,3.1.4Sampling,3.1.5NumberofTestsandRetest,3.1.6SpecimenPreparation,3.1.7TestMethods,3.1.8SignificanceofNumericalLimits,3.1.9I...
