ISO／DIS 16573-2：2020.docx

DRAFTINTERNATIONA1STANDARDISO/DIS16573-2ISOTC17SC7Votingbeginson:2023-04-07Secretariat:AFNORVotingterminateson:2023-06-30Stee1Measurementmethodfortheeva1uationofhydrogenembritt1ementresistanceofhighstrengthstee1s一Part2:S1owstainratetestICS:77.040.99THISDOCUMENTISADRAFTCIRCU1ATEDFORCOMMENTANDAPPROVA1.ITISTHEREFORESUBJECTTOCHANGEANDMAYNOTBEREFERREDTOASANINTERNATIONA1STANDARDUNTI1PUB1ISHEDASSUCH.INADDITIONTOTHEIREVA1UATIONASBEINGACCEPTAB1EFORINDUSTRIA1TECHNO1OGICA1,COMMERCIA1ANDUSERPURPOSES.DRAFTINTERNATIONA1STANDARDSMAYONOCCASIONHAVETOBECONSIDEREDINTHE1IGHTOFTHE1RPOTENTIA1TOBECOMESTANDARDSTOWHICHREFERENCEMAYBEMADEINNATIONA1REGU1ATIONS.RECIPIENTSOFTHISDRAFTAREINVITEDTOSUBMIT.WITHTHEIRCOMMENTS.NOTIFICATIONOFANYRE1EVANTPATENTRIGHTSOFWHICHTHEYAREAWAREANDTOPROVIDESUPPORTINGDOCUMENTATION.Thisdocumentiscircu1atedasreceivedfromthecommitteesecretariat.ReferencenumberISO/DIS16573-2:2023(E)COPYRIGHTPROTECTEDDOCUMENT©ISO2023A11rightsreserved.Un1essotherwisespecied,orrequiredinthecontextofitsimp1ementation,nopartofthispub1icationmaybereproducedoruti1izedotherwiseinanyformorbyanymeans,e1ectronicormechanica1,inc1udingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1owor!SO,smemberbodyinthecountryoftherequesterISOcopyrightofficeCP401Ch.deB1andonnet8CH-1214VernieGenevaPhone:*41227490111Fax:÷41227490947Emai1:copyrightiso.orgWebsite:www.iso.orgPub1ishedinSwitzer1andPageContentsForewordIntroduction2Nc)rmatvereferences14Princip1e15.2F1attypeMedmen26 Hydrogenchargingmethods37 Preparationofe1ectrop1atingso1utionande1ectrop1atingcondition3Stra1nratetst.39 POSt-testSPeC1inetreat±tent610 HydrOgentherma1desorption6ForewordISO(theInternationa1OrganizationforStandardization)isawor1dwidefederationofnationa1standardsbodies(ISOmemberbodies).TheworkofpreparingInternationa1Standardsisnorma11ycarriedoutthroughISOtechnica1committees.Eachmemberbodyinterestedinasubjectforwhichatechnica1committeehasbeenestab1ishedhastherighttoberepresentedonthatcommittee,internationa1organizations,governmenta1andnon-governmenta1,in1iaisonwithISO,a1sotakepartinthework.ISOco11aboratesc1ose1ywiththeInternationa1E1ectrotechnica1Commission(IEC)ona11mattersofe1ectrotechnica1standardization.Theproceduresusedtodeve1opthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticu1ar,thedifferentapprova1criterianeededforthedifferenttypesofISOdocumentsshou1dbenoted.Thisdocumentwasdraftedinaccordancewiththeeditoria1ru1esoftheISO/IECDirectives,Part2(seeWWW,isoQigdiecUves).Attentionisdrawntothepossibi1itythatsomeofthee1ementsofthisdocumentmaybethesubjectofpatentrights.ISOsha11notbehe1dresponsib1eforidentifyinganyora11suchpatentrights.Detai1sofanypatentrightsidentifiedduringthedeve1opmentofthedocumentwi11beintheIntroductionand/orontheISO1istofpatentdec1arationsreceived(seeWWW.iso.org/patents).Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexp1anationofthevo1untarynatureofstandards,themeaningofISOspecifictermsandexpressionsre1atedtoconformityassessment,aswe11asinformationaboutISO'sadherencetotheWor1dTradeOrganization(WTO)princip1esintheTechnica1BarrierstoTrade(TBT)seewww.iso.org/iso/foreword.htm1.ThisdocumentwaspreparedbyTechnica1CommitteeISO/TC7,Stee1,SubcommitteeSC7Methodsoftesting(otherthanmechanica1testsandchemica1ana1ysis).Themainchangescomparedtothepreviouseditionareasfo11ows:A1istofai1partsintheISO16573seriescanbefoundontheISOwebsite.Anyfeedbackorquestionsonthisdocumentshou1dbedirectedtotheuser,snationa1standardsbody.Acomp1ete1istingofthesebodiescanbefoundatWWW.isoQrg/members.htm1.IntroductionThemechanica1propertiesofhighstrengthstee1s,suchastensi1estrength,e1ongationandreductionofareawou1dbedegradedbytheeffectofhydrogen,knownashydrogenembritt1ement,andthesusceptibi1ityofhydrogenembritt1ementbecomesgreaterwithincreasingthestrength1eve1ofstee1s,ThisInternationa1Standardsuggestsastandardizedtestmethodfortheeva1uationofhydrogenembritt1ementresistanceofhighstrengthstee1s,main1yferriticbasestee1s,usings1owstrainratetest.Stee1Measurementmethodfortheeva1uationofhydrogenembritt1ementresistanceofhighstrengthstee1s一Part2:S1owstainratetest1 ScopeThisinternationa1standardmethodprovidestheeva1uationmethodoftheresistancetohydrogenembritt1ement(i.e.,hydrogende1ayedfracture)usings1owstrainratetestwithhydrogenpre-chargedspecimens.Theamountofhydrogenabsorbedinthespecimenswi11beana1ysedquantitative1ybytherma1desorptionana1ysissuchasgaschromatography,massspectrometryandsoon.HydrogenprechargingmethodsaresameasISO16573-1.Thismethodaddressess1owstrainratetesttodeterminethesusceptibi1ityofhydrogenembritt1ementofhighstrengthstee1,andismain1yapp1icab1efortheferriticbasestee1s.Testingmethodsforeithersmoothornotchedspecimensarea1soinc1uded.