Designation:B66−15StandardSpecificationforBronzeCastingsforSteamLocomotiveWearingParts1ThisstandardisissuedunderthefixeddesignationB66;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationestablishesrequirementsforbronzecastingsforsteamlocomotivewearingparts.ThefollowingCopperAlloyUNSNos.arespecified:C93200,C93400,C93600,C93700,C93800,C94300,C94400,C94500,andC95400.2NOTE1—Historically,thealloysinthisspecificationhavebeenusedintheapplicationslistedintheAppendix.Actualpracticemayvaryaccord-ingtolocomotivetypeandservice.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3ThefollowingdocumentsinthecurrentissueoftheBookofStandardsformapartofthisspecificationtotheextentreferencedherein:B824SpecificationforGeneralRequirementsforCopperAlloyCastingsB846TerminologyforCopperandCopperAlloysE255PracticeforSamplingCopperandCopperAlloysfortheDeterminationofChemicalCompositionE527PracticeforNumberingMetalsandAlloysintheUnifiedNumberingSystem(UNS)2.2AARStandards:4M-503BronzeBearingsforLocomotives3.Terminology3.1Fordefinitionsoftermsrelatedtocopperalloys,refertoTerminologyB846.4.GeneralRequirements4.1ThefollowingsectionsofSpecificationB824formapartofthisspecification.IntheeventofaconflictbetweenthisspecificationandSpecificationB824,therequirementsofthisspecificationshalltakeprecedence.4.1.1Terminology(Section3),4.1.2OtherRequirements(Section7),4.1.3Dimensions,Mass,andPermissibleVariations(Sec-tion8),4.1.4Workmanship,Finish,andAppearance(Section9),4.1.5Samp...
