Designation:B884−11StandardSpecificationforNiobium-TitaniumAlloyBillets,Bar,andRodforSuperconductingApplications1ThisstandardisissuedunderthefixeddesignationB884;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversniobium-titaniumalloybillets,bars,androds,at46to48%titanium.Thismaterialisusedinthemanufactureofwireforsuperconductingapplications.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section14,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE92TestMethodforVickersHardnessofMetallicMaterials(Withdrawn2010)3E112TestMethodsforDeterminingAverageGrainSizeE165PracticeforLiquidPenetrantExaminationforGeneralIndustryE214PracticeforImmersedUltrasonicTestingbytheRe-flectionMethodUsingPulsedLongitudinalWaves(With-drawn2007)3E384TestMethodforKnoopandVickersHardnessofMaterialsE2626GuideforSpectrometricAnalysisofReactiveandRefractoryMetals2.2ANSIStandard:ANSIB46-1SurfaceTexture42.3ASNTStandard:ASNTSNT-TC-1APersonnelQualificationandCertifica-tioninNondestructiveTesting53.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1rod,n—materialgreaterthan0.5in.(13mm)andlessthan2.5in(60mm)in.diameter.3.1.2bar,n—materialgreaterthanorequalto2.5in(60mm)andlessthan6in.(150mm)indiameter.3.1.3billet,n—materialgr...
