A803A803M-03 焊接铁素体不锈钢给水加热器管用标准规范

Designation:A803/A803M–03StandardSpecificationforWeldedFerriticStainlessSteelFeedwaterHeaterTubes1ThisstandardisissuedunderthefixeddesignationA803/A803M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversweldedferriticstainlesssteelfeedwaterheatertubesincludingthosebent,ifspecified,intotheformofU-tubesforapplicationintubularfeedwaterheaters.1.2Thetubingsizescoveredshallbe5⁄8to1in.[15.9to25.4mm]inclusive,inoutsidediameter,andaverageorminimumwallthicknessesof0.028in.[0.7mm]andheavier.1.3Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecifi-cation.Theinch-poundunitsshallapplyunlessthe“M”designationofthisspecificationisspecifiedintheorder.2.ReferencedDocuments2.1ASTMStandards:A480/A480MSpecificationforGeneralRequirementsforFlat-RolledStainlessandHeatResistingSteelPlate,Sheet,andStrip2A763PracticesforDetectingSusceptibilitytoIntergranu-larAttackinFerriticStainlessSteels2A941TerminologyRelatingtoSteel,StainlessSteel,Re-latedAlloys,andFerroalloys3A1016/A1016MSpecificationforGeneralRequirementsforFerriticAlloySteel,AusteniticAlloySteel,andStain-lessSteelTubes33.Terminology3.1Definitions—Fordefinitionsoftermsusedinthisspeci-fication,refertoTerminologyA941.4.OrderingInformation4.1Itistheresponsibilityofthepurchasertospecifyallrequirementsthatarenecessaryformaterialunderthisspeci-fication.Suchrequirementsmayinclude,butarenotlimitedto,thefollowing:4.1.1Quantity(lengthornumberofpieces),4.1.2Materialdescription,4.1.3Dimensions(outsidediameter,wallthickness(mini-mumoraveragewall),andlength),4.1.4Grade(chemicalcomposition)(Table1),and4.1.5U-bendrequirements,iforderspecifiesbending,U-bendschedulesordrawingsshallaccompanytheorder.4.2OptionalRequirements—PurchasershallspecifywhetherannealingoftheU-bendsisrequiredorwhethertubesaretobehydrotestedorair-tested(see10.5).4.3SupplementaryRequirements—Purchasershallspecifyonthispurchaseorderifmaterialistobeeddy-currenttestedinaccordancewithSupplementaryRequirementS1orS2,andifspecialtestreportsarerequired,underSupplementaryRequire-mentS3,and,4.4Anyspecialrequirements.5.GeneralRequirements5.1MaterialfurnishedtothisspecificationshallconformtotheapplicablerequirementsofthelatestpublishededitionofSpecificationA1016/A1016Munlessotherwiseprovidedherein.6.MaterialsandManufacture6.1Thetubeshallbemadefromflat-rolledsteelbyanautomaticweldingprocesswithnoadditionoffillermetal.6.2Surfacecontaminantsmayhavedetrimentaleffectsonhightemperaturepropertiesorcorrosionresistanceoftubing.Contaminationbycopper,lead,mercury,zinc,chlorides,orsulfurmaybedetrimentaltostainlesssteels.Themanufacturershallemploytechniqueswhichminimizesurfacecontamina-tionbytheseelements.1ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.10onStainlessandAlloySteelTubularProducts.CurrenteditionapprovedSept.10,2003.PublishedOctober2003.Originallyapprovedin1982.Lastpreviouseditionapprovedin2002asA803/A803M–02.2AnnualBookofASTMStandards,Vol01.03.3AnnualBookofASTMStandards,Vol01.01.1*ASummaryofChangessectionappearsattheendofthisstandard.Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.7.CleaningBeforeAnnealing7.1Alllubricantsorcoatingsusedinthemanufactureofstraight-lengthtubeorinthebendingshallberemovedfromallsurfacespriortoanyannealingtreatments.U-bendsonwhichalubricanthadbeenappliedtotheinsidesurfaceduringbendingshallhavethecleannessoftheirinsidesurfaceconfirmedbyblowingclose-fittingacetone-soakedfeltplugsthrough10%ofthetubesofeachbendradius.Dry,oil-freeairorinertgasshallbeusedtoblowtheplugsthroughthetubes.Iftheplugsblownthroughanytubeshowmorethanalightgraydiscoloration,alltubesthathavehadalubricantappliedtotheinsidesurfaceduringbendingshallberecleaned.Afterrecleaning10%ofthetubesofeachbendradiuswhoseinsidesurfacehadbeensubjectedtobending,lubricantsshallberetested.8.HeatTreatment8.1AllfinishedstraighttubingorstraighttubingreadyforU-bendingshallbefurnishedinthesolution-annealedcondi-tion.Theannealingprocedureshallconsistofheatingthematerialtoatemperatureof1200°F[650°C]orhigherandcooling(asappropriateforthegrade)tomeettherequirementsofthisspecification.8.2IfheattreatmentofU-bendsisspecified,itshallsatisfytheannealingproceduredescribedin8.1andshallbedoneasfollows:8.2.1TheheattreatmentshallbeappliedtotheU-bendareaplusapproximately6in.[150mm]ofeachlegbeyondthetangentpointoftheU-bend.8.2.2Iftheheattreatmentspecifiedin8.2isaccomplishedbyresistance-heatingmethodswhereinelectrodesareclampedtothetubes,theclampedareasshallbevisuallyexaminedforarcburns.