ASTM-A193-A193M-08

Designation:A193/A193M–08bStandardSpecificationforAlloy-SteelandStainlessSteelBoltingMaterialsforHighTemperatureorHighPressureServiceandOtherSpecialPurposeApplications1ThisstandardisissuedunderthefixeddesignationA193/A193M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecification2coversalloyandstainlesssteelbolt-ingmaterialforpressurevessels,valves,flanges,andfittingsforhightemperatureorhighpressureservice,orotherspecialpurposeapplications.Thetermboltingmaterialasusedinthisspecificationcoversbars,bolts,screws,studs,studbolts,andwire.Barsandwireshallbehot-wrought.Thematerialmaybefurtherprocessedbycenterlessgrindingorbycolddrawing.Austeniticstainlesssteelmaybecarbidesolutiontreatedorcarbidesolutiontreatedandstrain-hardened.Whenstrainhardenedausteniticsteelisordered,thepurchasershouldtakespecialcaretoensurethatAppendixX1isthoroughlyunder-stood.1.2Severalgradesarecovered,includingferriticsteelsandausteniticstainlesssteelsdesignatedB5,B8,andsoforth.Selectionwilldependupondesign,serviceconditions,me-chanicalproperties,andhightemperaturecharacteristics.1.3Thefollowingreferencedgeneralrequirementsarein-dispensableforapplicationofthisspecification:SpecificationA962/A962M.NOTE1—Thecommitteeformulatingthisspecificationhasincludedfifteensteeltypesthathavebeenratherextensivelyusedforthepresentpurpose.Othercompositionswillbeconsideredforinclusionbythecommitteefromtimetotimeastheneedbecomesapparent.NOTE2—Forgradesofalloy-steelboltingmaterialsuitableforuseatthelowerrangeofhightemperatureapplications,referenceshouldbemadetoSpecificationA354.NOTE3—Forgradesofalloy-steelboltingmaterialsuitableforuseinlowtemperatureapplications,referenceshouldbemadetoSpecificationA320/A320M.1.4NutsforusewiththisboltingmaterialarecoveredinSection14.1.5SupplementaryRequirementsS1throughS14arepro-videdforusewhenadditionaltestsorinspectionaredesired.Theseshallapplyonlywhenspecifiedinthepurchaseorder.1.6Thisspecificationisexpressedinbothinch-poundunitsandinSIunits.However,unlesstheorderspecifiestheapplicableMspecificationdesignation(SIunits),thematerialshallbefurnishedtoinch-poundunits.1.7Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.Withinthetext,theSIunitsareshowninbrackets.2.ReferencedDocuments2.1ASTMStandards:3A153/A153MSpecificationforZincCoating(Hot-Dip)onIronandSteelHardwareA194/A194MSpecificationforCarbonandAlloySteelNutsforBoltsforHighPressureorHighTemperatureService,orBothA320/A320MSpecificationforAlloy-SteelandStainlessSteelBoltingMaterialsforLow-TemperatureServiceA354SpecificationforQuenchedandTemperedAlloySteelBolts,Studs,andOtherExternallyThreadedFasten-ersA788/A788MSpecificationforSteelForgings,GeneralRequirementsA962/A962MSpecificationforCommonRequirementsforSteelFastenersorFastenerMaterials,orBoth,IntendedforUseatAnyTemperaturefromCryogenictotheCreepRangeB633SpecificationforElectrodepositedCoatingsofZinconIronandSteel1ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.22onSteelForgingsandWroughtFittingsforPipingApplicationsandBoltingMaterialsforPipingandSpecialPurposeApplications.CurrenteditionapprovedAug.1,2008.PublishedSeptember2008.Originallyapprovedin1936.Lastpreviouseditionapprovedin2008asA193/A193M-08a.2ForASMEBoilerandPressureVesselCodeapplications,seerelatedSpecifi-cationSA-193inSectionIIofthatCode.3ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.1*ASummaryofChangessectionappearsattheendofthisstandard.Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.B695SpecificationforCoatingsofZincMechanicallyDepositedonIronandSteelB696SpecificationforCoatingsofCadmiumMechanicallyDepositedB766SpecificationforElectrodepositedCoatingsofCad-miumE18TestMethodsforRockwellHardnessofMetallicMaterialsE21TestMethodsforElevatedTemperatureTensionTestsofMetallicMaterialsE112TestMethodsforDeterminingAverageGrainSizeE139TestMethodsforConductingCreep,Creep-Rupture,andStress-RuptureTestsofMetallicMaterialsE150RecommendedPracticeforConductingCreepandCreep-RuptureTensionTestsofMetallicMaterialsUnderConditionsofRapidHeatingandShortTimes4E151RecommendedPracticeforTensionTestsofMetallicMaterialsatElevatedTemperaturesWithRapidHeatingandConventionalorRapidStrainRates4E292TestMethodsforConductingTime-for-RuptureNotchTensionTestsofMaterialsE328TestMethodsforStressRelaxationforMaterialsandStr