Designation:B898−11(Reapproved2016)StandardSpecificationforReactiveandRefractoryMetalCladPlate1ThisstandardisissuedunderthefixeddesignationB898;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversplateconsistingofabasemetaltowhichisbonded,integrallyandcontinuously,ononeorbothsidesalayerofoneofthefollowing:titanium,zirconium,tantalum,niobium,andtheiralloys.Thematerialgenerallyisintendedforpressurevesseluse.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.Thevaluesinparenthesesandinmetrictablesareprovidedforinformationonly.2.ReferencedDocuments2.1ASTMStandards:2A265SpecificationforNickelandNickel-BaseAlloy-CladSteelPlateA578/A578MSpecificationforStraight-BeamUltrasonicExaminationofRolledSteelPlatesforSpecialApplica-tionsB265SpecificationforTitaniumandTitaniumAlloyStrip,Sheet,andPlateB393SpecificationforNiobiumandNiobiumAlloyStrip,Sheet,andPlateB551/B551MSpecificationforZirconiumandZirconiumAlloyStrip,Sheet,andPlateB708SpecificationforTantalumandTantalumAlloyPlate,Sheet,andStrip2.2ASMECode:3BoilerandPressureVesselCode,SectionIXWeldingQuali-ficationsBoilerandPressureVesselCode,SectionVIIIDivisions1,2,32.3MilitaryStandard:4MIL-J-24445AJoint,BimetallicBonded,AluminumtoSteel3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1Thismaterialisconsideredassingle-cladordouble-claddependentuponwhetheroneorbothsidesofthebasemetalarecoveredbyacladdingmetal.3.1.2basemetal,n—thecomponentthatcomprisesthegreatestpercentageoftotalthickness.3.1.3claddingmetal,orcladdingmetals,n—thecomponent,orcomponents,whichindividuallycompriselessthanthegreatestpercentageoftotalthickness.3.1.4claddingoperation,n—theprod...
