ISO 04212-2023.docx

INTERNATIONA1.STANDARDISO4212editionFirst2O23-O2Corrosionofmeta1.sanda1.1.oys一Methodofoxa1.icacidetchingtestforintergranu1.arcorrosionofausteniticstain1.essstee1.Corrosiondesmetauxeta1.1.iagesMethoded'essaidegravureaIacideoxa1.iquepour1.acorrosionIntergranu1.airedeacierInoxydab1.eaustnitiqueCOPYRIGHTPROTECTEDDOCUMENT©ISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InyM1.tta0Dmk<nroni(ncm11ni10tf1.*Mqn1.C6pW11opypMRationmaytheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1.oworISO'smemberbodyinthecountr)oftherequester.f),WV>fifiU81.andonnet8CH-1214Vernier,GenevaPhone：M1.227490111觥ftte:丽丽BQrgPub1.ishedinSwitzer1.andContentsPageForewordI>troductionNormativereferencesTermsanddefinitionsGenera1.princip1.esApparatusSensitizationheattreatmentfortestspecimensTestspecimensTestso1.utionTestprocedureEva1.uationofetchingstructureTestreportBib1.iography.ForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardstdiugh(ISOtBrhnkoibMri*Ri)tSis(vcekuWPWf1.pbringbodyIittnif1.Mii6tanbjkif<ntwrhhvar!tedmitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO.a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenanceare。智SFR½幽of1.SO1.EC(VifY1.的M51btheeditoria1.ru1.esoftheISO/IECDirectives.Part2(seewww.iso.org/direc1.ives).R褥衲Onrigbtsd随秘姐n棍蜘琳蛾ns由能献11三冲撤利版府doc1.三棉犯鼠跟监ssubjectofanypatentrightsidentifiedduringthedeve1.opmen)/do向U1.beintheIntroductionand/orontheISO1.istofpatentdec1.arationsreceived(seewww.iso.org/patents).Anytradeusedinthisconstitutenameendorsement.documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationofthevo1.untarynatureofstandards,themeaningofISOspecifictermsand觐牌R涸现dOwarWMWO)assE麻ftinwe植5i盛,nBaNW现Jdea樵¾es做vv¼w.iso.orgiso/forewod.htmI.ThisdocumentwaspreparedbyTechnica1.CommitteeISO/TC156,Corrosionofmeta1.sanda1.1.oys.AnyfeedbackorquestionsonthisdocumentShCY1.dhS1.hUM1.rnationa1.standardsbody.Acomp1.ete1.istingofthesebodiescanbefoundatwww.iso.org/members.htm1.Introductionofchromium-richattributab1.etocarbidesboundaryitsegregationcontinuousprecipitates.dep1.etionformationstain1.essG0571:2003andISO3651-1,A262-15PracticeandA)cannoteva1.uatesensitization,howeverretchingthemse1.ves.thechromium-richsuspected,IGCprecipitatessu1.fate-su1.furicacidgrainboundarycarbidesdocumentbenefitsonG0571:2003.etchingtestsarethattheyaresimp1.e,easyandrapid.This23-A1.1.rightsreservedIntergranu1.arcorrosion(IGC)isaformof1.oca1.izedcorrosionwhichoccursa1.onggrainboundaries.IGCstain1.essstee1.Isgrainboundarygrainoccurs,1.eadsandChromiumWhentheadjacenttothegrainboundary,andIGCoccursincertaincorrosivemedia.Thisprocessisusua1.1.yknownassensitization.Sensitizationofstain1.essstee1.canbeeva1.uatedbyISOIGCtestsforaustenitic(JISstee1.s：suchasASTMISO3651-2rISO12732.Ontheotherhand,oxa1.ictheycaneva1.uatenon-sensitizedconditionOfausteniticstain1.essstee1.sandsuspicionsofsensitizationbyobservingtheetchedsurfaceofthestain1.essstee1.s.Thisisbecauseitdoesnotetchchromiumdep1.etionadjacenttoIfsensitizationisgrainboundarytests,ferricbutchromium-richtest(seeISO3651-2)1.65%nitricaddtest(seeISO36511),coppersu1.fate-su1.furicacidtest(seeISO3651-2)orEPR1.est(ISO12732)shou1.dbeconductedtoeva1.uatesensitizationofausteniticstain1.essstee1.s.ThemainbasedOfJIStheseoxa1.icaddCorrosionofmeta1.sanda1.1.oysMethodofoxa1.icacidetchingtestforintergranu1.arcorrosionofausteniticstain1.essstee1.1 ScopeObservingoxa1.icstructureOfThismethodsurfaceeva1.uatenon-sensitizationperforminge1.ectro1.yticetching2 Normativereferencesconstitutesrequirements1.atesteditiondocument.referencedreferences,(inc1.uc1.ingamendments)app1.ies.app1.ies.andferritic-austenitic(dup1.ex)stain1.essstee1.sCorrosiontestinnitricacidmediumbymeasurementof1.ossinmass(HueyIeSt)austeniticandferritic-austenitic(dup1.ex)stain1.essstee1.s-Corrosiontestinmediacontainingsu1.furicacidISO8044,Corrosionofmeta1.sanda1.1.oysVocabu1.aryusingthedoub1.e1.oopmethod(basedonCihasmethod)3 TermsanddefinitionsISOandIECmaintaintermino1.ogydatabasesforuseinstandardizationatthefo1.1.owingaddresses:3.1 IECE1.ectropedia:avai1.ab1.eathttps:/www.B1.ectTopedia.org/sensitizationIGCinacorrosivemediumstabi1.izedausteniticstain1.essstee1.随划Um!HTW!E，IEThisdocumentspecifiesamethodtotestForintergranu1.arcorrosion(IGC)inausteniticstain1.essstee1.susingantheacidetch,theetchedcanwithmicroscopeafterausteniticstain1.essstee1.sby(hereinafterca1.1.ed“e