ASTM-A194A194M-07高温和高压设备用碳素钢与合金钢螺栓和螺母的规格

Designation:A194/A194M–07EndorsedbyManufacturersStandardizationSocietyoftheValveandFittingsIndustryUsedinUSNRC-RDTStandardsStandardSpecificationforCarbonandAlloySteelNutsforBoltsforHighPressureorHighTemperatureService,orBoth1ThisstandardisissuedunderthefixeddesignationA194/A194M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecification2coversavarietyofcarbon,alloy,andmartensiticstainlesssteelnutsinthesizerange1⁄4through4in.andmetricM6throughM100nominal.Italsocoversausteniticstainlesssteelnutsinthesizerange1⁄4in.andM6nominalandabove.Thesenutsareintendedforhigh-pressureorhigh-temperatureservice,orboth.Gradesubstitutionswith-outthepurchaser’spermissionarenotallowed.1.2Barsfromwhichthenutsaremadeshallbehot-wrought.Thematerialmaybefurtherprocessedbycenterlessgrindingorbycolddrawing.Austeniticstainlesssteelmaybesolutionannealedorannealedandstrain-hardened.Whenannealedandstrainhardenedausteniticstainlesssteelisorderedinaccor-dancewithSupplementaryRequirementS1,thepurchasershouldtakespecialcaretoensurethat8.2.2,SupplementaryRequirementS1,andAppendixX1arethoroughlyunderstood.1.3Supplementaryrequirements(S1throughS8)ofanoptionalnatureareprovided.Theseshallapplyonlywhenspecifiedintheinquiry,contract,andorder.1.4Thisspecificationisexpressedinbothinch-poundunitsandinSIunits.However,unlesstheorderspecifiestheapplicable“M”specificationdesignation(SIunits),themate-rialshallbefurnishedtoinch-poundunits.1.5Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecifi-cation.2.ReferencedDocuments2.1ASTMStandards:3A153/A153MSpecificationforZincCoating(Hot-Dip)onIronandSteelHardwareA276SpecificationforStainlessSteelBarsandShapesA320/A320MSpecificationforAlloy-SteelandStainlessSteelBoltingMaterialsforLow-TemperatureServiceA962/A962MSpecificationforCommonRequirementsforSteelFastenersorFastenerMaterials,orBoth,IntendedforUseatAnyTemperaturefromCryogenictotheCreepRangeB695SpecificationforCoatingsofZincMechanicallyDepositedonIronandSteelB696SpecificationforCoatingsofCadmiumMechanicallyDepositedB766SpecificationforElectrodepositedCoatingsofCad-miumE112TestMethodsforDeterminingAverageGrainSizeF1941SpecificationforElectrodepositedCoatingsonThreadedFasteners(UnifiedInchScrewThreads(UN/UNR))2.2AmericanNationalStandards:4B1.1UnifiedScrewThreadsB1.2GagesandGagingforUnifiedInchScrewThreadsB1.13MMetricScrewThreadsB18.2.2SquareandHexNutsB18.2.4.6MMetricHeavyHexNuts3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1AusteniticGrades—Allgradeswithaprefixof“8”or“9”.1ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.22onSteelForgingsandWroughtFittingsforPipingApplicationsandBoltingMaterialsforPipingandSpecialPurposeApplications.CurrenteditionapprovedFeb.1,2007.PublishedFebruary2007.Originallyapprovedin1936.Lastpreviouseditionapprovedin2006asA194/A194M–06a.2ForASMEBoilerandPressureVesselCodeapplicationsseerelatedSpecifi-cationSA-194inSectionIIofthatcode.3ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.4AvailablefromAmericanNationalStandardsInstitute(ANSI),25W.43rdSt.,4thFloor,NewYork,NY10036.1*ASummaryofChangessectionappearsattheendofthisstandard.Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.CopyrightASTMInternationalProvidedbyIHSunderlicensewithASTMNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,,,,````-`-`,,`,,`,`,,`---—Grades1,2,2H,2HM,3,4,6,6F,7,7M,and16.3.1.3Lot:3.1.3.1Unlessotherwisespecified(see3.1.3.2),alotisthequantityofnutsofasinglenominalsizeandgradeproducedbythesamemanufacturingprocess.3.1.3.2WhenSupplementaryRequirementS5isinvokedonthepurchaseorder,thefollowingdefinitionsofalotshallapply:ForGrade8Nuts—Thequantityofallthenutsofasinglenominaldiameterandgrademadefromthesameheatofsteelandmadebythesamemanufacturingprocess.ForAllOtherGradeNuts(see8.2and8.1.2.1)—Allthenutsofasinglenominaldiameterandgrademadefromthesameheatnumberandheattreatedinthesamebatchifbatch-typeheattreatingequipmentisusedorheattreatedinthesamecontinuousrunofnotmorethan8hunderthesameconditionsifcontinuous-typeheattreatingequipmentisused.3.1.4Type3.1.4.1ForGrade8Nuts—Variationswithinthegradedesignatedbyaletteranddifferentiatedbychemistryandbymanufacturingprocess.3.1.4.2ForGrade6Nuts—Variationswithinthe