Designation:B22/B22M−17StandardSpecificationforBronzeCastingsforBridgesandTurntables1ThisstandardisissuedunderthefixeddesignationB22/B22M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationestablishesrequirementsforbronzecastingsforturntables,movablebridgesandbridgeparts,andbronzecastingssuitableforuseinbridgesandotherstructuresforfixedandexpansionbearingsinwhichmotionisslowandintermittent.ThefollowingCopperAlloysarespecified:UNSNo.C86300,C90500,C91100,C91300,andC93700.NOTE1—Historically,thealloysinthisspecificationhavebeenusedintheapplicationslistedinAppendixX1.Actualpracticemayvary.21.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thefollowingsafetyhazardcaveatpertainsonlytothetestmethod(s)describedinthisspecification:1.3.1Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ThefollowingdocumentsinthecurrentissueoftheBookofStandardsformapartofthisspecificationtotheextentreferencedherein:2.2ASTMStandards:3B824Specifica...
