Designation:B988−13StandardSpecificationforPowderMetallurgy(PM)TitaniumandTitaniumAlloyStructuralComponents1ThisstandardisissuedunderthefixeddesignationB988;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverspowdermetallurgy(PM)struc-turalcomponentsfabricatedfrom:1.1.1Commerciallypure(CP)(thatis,unalloyed)titaniumpowder,1.1.2Pre-alloyedpowders.1.1.3Mixturesofelementalpowdersormixturesofelemen-talpowdersandpre-alloyedpowders.1.2Thisspecificationcovers:1.2.1Grade1PM—Unalloyedtitanium,1.2.2Grade2PM—Unalloyedtitanium,1.2.3Grade3PM—Unalloyedtitanium,1.2.4Grade4PM—Unalloyedtitanium,1.2.5Grade5PM—Titaniumalloy(6%aluminum,4%vanadium),1.2.6Grade9PM—Titaniumalloy(3%aluminum,2.5%vanadium),1.2.7Ti-6Al-4VPMLowInterstitial(LI),1.2.8Ti-6Al-6V-2SnPM.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B243TerminologyofPowderMetallurgyB311TestMethodforDensityofPowderMetallurgy(PM)MaterialsContainingLessThanTwoPercentPorosityB348SpecificationforTitaniumandTitaniumAlloyBarsandBilletsB923TestMethodforMetalPowderSkeletalDensitybyHeliumorNitrogenPycnometryB962TestMethodsforDensityofCompactedorSinteredPowderMetallurgy(PM)ProductsUsingArchimedes’PrincipleE8/E8MTestMethodsforTensionTestingofMetallicMa-terialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE539TestMethodforAnalysisofTitaniumAlloysbyX-RayFluorescenceSpectrometryE1409TestMethodforDeterminationofOxygenandNitro-geninT...
