Designation:B108/B108M−15StandardSpecificationforAluminum-AlloyPermanentMoldCastings1ThisstandardisissuedunderthefixeddesignationB108/B108M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecification2coversaluminum-alloypermanentmoldcastingsdesignatedasshowninTable1.1.2Thisspecificationisforaluminum-alloypermanentmoldcastingsusedingeneralpurposeapplications.Itmaynotaddressthemechanicalproperties,integritytesting,andveri-ficationrequiredforhighlyloadedorsafetycriticalapplica-tions.1.3AlloyandtemperdesignationsareinaccordancewithANSIH35.1/H35.1(M).TheequivalentunifiednumberingsystemalloydesignationsareinaccordancewithPracticeE527.1.4Unlesstheorderspecifiesthe“M”specificationdesignation,thematerialshallbefurnishedtotheinch-poundunits.1.5Foracceptancecriteriaforinclusionofnewaluminumandaluminumalloysandtheirpropertiesinthisspecification,seeAnnexA1andAnnexA2.1.6Units—ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1Thefollowingdocumentsoftheissueineffectonthedateofcastingpurchaseformapartofthisspecificationtotheextentreferencedherein:2.2ASTMStandards:3B179SpecificationforAluminumAlloysinIngotandMol-tenFormsforCastingsfromAllCastingProcessesB275PracticeforCodificationofCertainZinc,TinandLeadDieCasting...
