Designation:B296−03(Reapproved2014)StandardPracticeforTemperDesignationsofMagnesiumAlloys,CastandWrought1ThisstandardisissuedunderthefixeddesignationB296;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thispracticecoversasystemfordesignatingthetem-persofmagnesiumalloys,castandwrought.ThedesignationsusedinASTMspecificationsunderthejurisdictionofCom-mitteeB07formagnesiumalloycastingsandwroughtproductsconformtothispractice.22.BasisofCodification2.1Thedesignationsfortemperareusedforallformsofmagnesiumandmagnesium-alloyproductsexceptingotsandarebasedonthesequenceofbasictreatmentsusedtoproducethevarioustempers.2.2Thetemperdesignationfollowsthealloydesignation,thetwobeingseparatedbyadash.2.3Basictemperdesignationsconsistofletters.Subdivi-sionsofthebasictempers,whererequired,areindicatedbyadigitordigitsfollowingtheletter.Thesedesignatespecificsequencesofbasictreatments,butonlyoperationsrecognizedassignificantlyinfluencingthecharacteristicsoftheproductareindicated.Shouldsomeothervariationofthesamese-quenceofbasicoperationsbeappliedtothesamealloy,resultingindifferentcharacteristics,thenadditionaldigitsareaddedtothedesignation.NOTE1—Inmaterialspecificationscontainingreferencetotwoormoretempersofthesamealloywhichresultinidenticalmechanicalproperties,thedistinctionbetweenthetempersshouldbecoveredinsuitableexplanatorynotes.2.4ThetemperdesignationsandthesubdivisionsarefullydefinedandexplainedinTable1.AbriefoutlineforquickreferenceisgiveninTable2.1ThispracticeisunderthejurisdictionoftheASTMCommitteeB07onLightMetalsandAlloysandisthedirectresponsibilityofSubcommitteeB07.04onMagnesiumAlloyCastandWroughtProducts.CurrenteditionapprovedMay1,2014.PublishedJune2014.Originallyapprovedin1954.Lastprevi...
