【astm標準】a 723 - a 723m - 10 (2015)

1、Designation:A723A723M?10(Reapproved2015)StardSpecificationfAlloySteelFgingsfHighStrengthPressureComponentApplication1ThisstardisissuedunderthefixeddesignationA723A723Mthenumberimmediatelyfollowingthedesignationindicatest

2、heyearofiginaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thisspecification2covers

3、requirementsfhighstrengthquenchedtemperedalloysteelfgingsfpressurevesselsisostaticpressesshocktubessimilarcomponents.1.2Thesematerialsarenotintendedfweldedconstruction.1.3Threegradesofnickelchromiummolybdenumsteelssixcla

4、ssesofincreasingtensilestrengthareincluded.Thestrengthclasssectionsizeconfigurationofthefgingwilllargelydictatetheapplicabletype(s)ofsteel.1.4ThevaluesstatedineitherinchpoundunitsSI(metric)unitsaretoberegardedseparatelya

5、sthestard.WithinthetexttablestheSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalentstherefeeachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconfmancewiththe

6、specification.1.5Unlessthederspecifiestheapplicable“M”specificationdesignationthematerialshallbefurnishedtotheinchpoundunits.2.ReferencedDocuments2.1ASTMStards:3A275A275MPracticefMagicParticleExaminationofSteelFgingsA370

7、TestMethodsDefinitionsfMechanicalTestingofSteelProductsA388A388MPracticefUltrasonicExaminationofSteelFgingsA788A788MSpecificationfSteelFgingsGeneralRequirements2.2OtherStards:ASMEBoilerPressureVesselCode43.deringInfmatio

8、nGeneralRequirements3.1InadditiontothederinginfmationrequiredbySpecificationA788A788Mthepurchasershallincludewiththeinquiryderadetaileddrawingsketchwrittendeionofthefgingthemethodofingtestlocation(see6.2).Whenappropriate

9、theareasofsignificantloadinginthefgingshallbedesignated.ThepurchasermayalsoincludeappropriatesupplementaryrequirementsfromSpecificationA788A788Maswellasfromthisspecification.3.2Materialsuppliedtothisspecificationshallcon

10、fmtotherequirementsofSpecificationA788A788Mwhichoutlinesadditionalderinginfmationmanufacturingrequirementstestingretestingmethodsproceduresmarkingcertificationproductanalysisvariationsadditionalsupplementaryrequirements.

11、3.3IftherequirementsofthisspecificationareinconflictwiththerequirementsofSpecificationA788A788Mtherequirementsofthisspecificationshallprevail.3.4WhenfgingsarerequiredtobeincompliancewithDivision3oftheASMEBoilerPressureVe

12、sselCodeSupplementaryRequirementS6shouldbespecified.4.MaterialsManufacture4.1MeltingPractice—ThesteelmeltingproceduresofSpecificationA788A788Mshallapplyexceptthattheopenhearthprocessshallnotbeusedthatthesteelshallbevacuu

13、mdegassedpritoduringthepouringoftheingotindertoremoveobjectionablegasesparticularlyhydrogen.4.1.1Useofsecondaryremeltingrefiningoperationsmaybeconsideredfparticularlydemingapplications.4.2Discard—Sufficientdiscardshallbe

14、takenfromeachingottosecurefreedomfrompipingexcessivesegregation.1ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteelStainlessSteelRelatedAlloysisthedirectresponsibilityofSubcommitteeA01.06onSteelFgingsBillet

15、s.CurrenteditionapprovedMarch12015.PublishedMarch2015.iginallyapprovedin1975.Lastpreviouseditionapprovedin2010asA723A723M–10.DOI:10.1520A0723_A0723M10R15.2FASMEBoilerPressureVesselCodeapplicationsseerelatedSpecificationS

16、A–723SA–723MinSectionIIofthatCode.3FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.4AvailablefromA

17、mericanSocietyofMechanicalEngineers(ASME)TwoParkAve.NewYkNY100165990:www.asme.g.ASummaryofChangessectionappearsattheendofthisstardCopyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStat

18、es16.5ientation—Fupsetdiskfgingsthelongitudinalaxisofalltestspecimensshallbeientedinthetangentialradialdirection.Fallotherfgingsthelongitudinalaxisofthespecimensshallbeientedinthedirectionofmaximumwkingofthefgingasagreed

19、betweenmanufacturerpurchaser.6.6NumberofTests:6.6.1Ffgingsweighing1000lb[455kg]lessasheattreatedbutnotexceeding80in.[2030mm]inlengthexcludingtestmaterialonetensiontestonesetofimpacttests(threespecimens)shallbetakentorepr

20、esenteachheatineachheattreatmentge.Thistestingshallberepeatedattheoppositeendofthesametestfgingiftheheattreatedlengthexcludingtestmaterialexceeds80in.[2030mm].Whenheattreatmentisperfmedincontinuoustypefurnaceswithsuitabl

21、etemperaturecontrolequippedwithrecdingpyrometerssothatcompleteheattreatmentrecdsareavailableaheattreatmentgeshallbeconsideredasanycontinuousrunnotexceeding8hinduration.6.6.2Fgingsweighingover1000lb[455kg]butnotover5000lb

22、[2270kg]asheattreatednotover80in.[2030mm]inlengthexcludingtestmaterialonetensiontestonesetofthreeimpacttestsshallberemovedfromeachfging.Whenthelengthofthefgingexceeds80in.[2030mm]thistestingshallberepeatedattheoppositeen

23、dofthefging.6.6.3Fgingsexceeding5000lb[2270kg]notover80in.[2030mm]inlengthexcludingtestmaterialshallhaveonetensiontestonesetofthreeimpacttestsremovedfromeachoftwolocations180apart.Ffgingswithlengthsexceeding80in.[2030mm]

24、thistestingshallberepeatedattheoppositeendofthefging.SupplementaryRequirementS6isapplicableffgingsintendedfuseundertherulesofSectionVIIIDivision3oftheASMEBoilerPressureVesselCode.7.NondestructiveExaminationRequirements7.

25、1UltrasonicExamination:7.1.1FgingsshallbeultrasonicallyexaminedinaccdancewiththeproceduresofPracticeA388A388M.7.1.1.1StraightBeamExamination:(a)Unlessotherwisespecifiedthebackreflectionmethodoftuningshallbeusedinaccdance

26、withPracticeA388A388M.(b)InadditiontothereptableconditionsofPracticeA388A388Mindicationsexceedingtheresultantbackreflectionshallberecded.(c)Afgingshallbeunacceptablewhenonemereflectionsarepresentproducingindicationsaccom

27、paniedbyacompletelossofbackreflectionnotattributabletonassociatedwiththegeometricconfiguration.Fthispurposeabackreflectionoflessthan5%offullscreenheightshallbeconsideredcompletelossofbackreflection.7.1.1.2AngleBeamExamin

28、ation:(a)CalibrationnotchesshallbecutintotheinsidediameteroutsidediametersurfacesinaccdancewithPracticeA388A388M.(b)Afgingthatcontainsadiscontinuitywhichresultsinanindicationexceedingtheamplitudeofthereferencelineissubje

29、cttorejection.(c)ThereptoftheultrasonictestshallbeincompliancewithPracticeA388A388M.(d)Additionalnondestructiveexaminationtrepanningmaybeemployedtoresolvequestionsofinterpretationofultrasonicindications.Themanufacturersh

30、allacceptresponsibilityfinjuriousdefectsthatwillnotberemovedinfinalmachining.7.2MagicParticleExamination:7.2.1EachfgingshallbeexaminedbymagicparticlemethodsdescribedinPracticeA275A275M.Acceptancerejectionstardsshallbeasf

31、ollows:Onlyindicationswithmajdimensionsgreaterthan1?16in.[1.6mm]shallbeconsideredrelevant.Thefollowingrelevantindicationsareunacceptable:7.2.1.1Anylinearindicationsgreaterthan1?16in.[1.6mm]longfmaterialslessthan5?8in.[16

32、mm]thickgreaterthan1?8in.[3.2mm]longfmaterialsfrom5?8in.tounder2in.[50TABLE2TensileRequirementsClass1Class2Class2aClass3AClass4BClass5CTensilestrengthminksi[MPa]115[795]135[930]145[1000]155[1070]175[1205]190[1310]Yieldst

33、rength0.2%offsetminksi[MPa]100[690]120[825]130[895]140[965]160[1105]180[1240]Elongationin2in.50mmmin%161413.5131210Reductionofareamin%504543403530ATypicalmaximumsectionsizeof10in.[255mm]fopenendedvessels7in.[180mm]fblind

34、endedvessels.BTypicalmaximumsectionsizeof6in.[150mm]fopenendedvessels4in.[100mm]fblindendedvessels.CTypicalmaximumsectionsizeof4in.[100mm].TABLE3pyVNotchImpactRequirementsat40F[4.5C]maxAClass1Class2Class2aAClass3BClass4C

35、Class5DMinimumaveragevalueofsetofthreespecimensftlbfE[J]35[47]30[41]28[38]25[34]20[27]12[16]Minimumvalueofonespecimenftlbf[J]30[41]25[34]23[31]20[27]15[20]10[14]Asuchotherlowertemperatureasisspecifiedwhensupplementaryreq

36、uirementS3isinvolved.BTypicalmaximumsectionsizeof10in.[255mm]fopenendedvessels7in.[180mm]fblindendedvessels.CTypicalmaximumsectionsizeof6in.[150mm]fopenendedvessels4in.[100mm]fblindendedvessels.DTypicalmaximumsectionsize