1、Z5XISO*7hzInternationalStandardISO21952Thirdedition2025-02WeldingconsumablesWireelectrodes,wires,rodsanddepositsforgasshieldedarcweldingofcreep-resistingsteels一ClassificationProduitsConsommablespourIesoudageFils-electrodes,fils,baguettesetdepotspourIesoudageaarcsousgazdeprotectiondesaciersresistanta
2、ufluageClassificationReferencenumberISO21952:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpos
3、tingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandC
4、ontentsPageForewordivIntroductionvi1 Scope12 Normativereferences13 Termsanddefinitions14 Classification24.1 General24.2 Classificationsystems25 Symbolsandrequirements25.1 Symbolfortheproductorprocess25.2 Symbolforthechemicalcompositionofwireelectrodes,wires,androds35.3 Symbolforthemechanicalproperti
5、esofall-weldmetal35.3.1 Classificationbychemicalcomposition-SystemA35.3.2 Classificationbytensilestrengthandchemicalcomposition-SystemB35.4 Symbolforshieldinggas35.4.1 Classificationbychemicalcomposition-systemA35.4.2 Classificationbytensilestrengthandchemicalcomposition-systemB36 Mechanicaltests127
6、 Preheatingandinterpasstemperatures128 Weldingconditionsandpasssequence129 Chemicalanalysis1310 Roundingprocedure1311 Retest1312 Technicaldeliveryconditions1313 Examplesofdesignation1313.1 General1313.2 Example1-Classificationbychemicalcomposition-systemA1313.3 Example2-Classificationbytensilestreng
7、thandchemicalcomposition-systemB1413.4 Example3-Classificationbychemicalcomposition-systemA1413.5 Example4-Classificationbytensilestrengthandchemicalcomposition-systemB1413.6 Example5-Classificationbychemicalcomposition-systemA1513.7 Example6-Classificationbytensilestrengthandchemicalcomposition-sys
8、temB1513.8 Example7-Classificationbychemicalcomposition-systemA1513.9 Example8-Classificationbytensilestrengthandchemicalcomposition-systemB16Bibliography17ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingIn
9、ternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollabor
10、atescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOd
11、ocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyc
12、laimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.HoweverlImplementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.I
13、SOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellas
14、informationaboutISOsadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT工seeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC44,Weldingandalliedprocesses,SubcommitteeSC3,Weldingconsumables,incollaborationwiththeEuropeanCommitteeforStandard
15、ization(CEN)TechnicalCommitteeCEN/TC121,Weldingandalliedprocesses,inaccordancewiththeAgreementontechnicalcooperationbetweenISOandCEN(ViennaAgreement).Thisthirdeditioncancelsandreplacesthesecondedition(ISO21952:2012),whichhasbeentechnicallyrevised.Themainchangesareasfollows: thisdocumenthasbeenreform
16、attedinsinglecolumnshowingSystemAandSystemBintablesandseparateclausesandsubclauses,somewhicharenew; normativereferenceshavebeenupdated; 5.4.2additionaltextwasaddedattheendofthesubclause; TabIe3,newcompositions9C1MV3and9C1MV4wereaddedandfootnotebwasrevised; TabIe3,theMn+Nifor9C1MVwasrevised; TabIe3,f
17、ootnotesfandgwererevised; TabIe4,X62X9C1MV3wasaddedtoreflecttheadditioninTable3; TablL6hasbeenrevised; ClaUSe10wasupdatedtomatchtheroundingprocedureusedinothercurrentstandards; CIaUSe13exampleswererevised,andnewexamplesadded.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstand
18、ardsbody.Acompletelistingofthesebodiescanbefoundatwww.iso.org/members.html.OfficialinterpretationsofISO/TC44documents,wheretheyexist,areavailablefromthispage:https:Committee.iso.org/sites/tc44/home/interpretation.htmLIntroductionThisdocumentwaspreparedincollaborationwiththeInternationalInstituteofWe
19、lding.Itrecognizesthattherearetwosomewhatdifferentapproachesintheglobalmarkettoclassifyingagivenwireelectrode,wire,rodordeposit,andallowsforeitherorbothtobeused,tosuitaparticularmarketneed.Applicationofeithertypeofclassificationdesignation(Orofbothwheresuitable)identifiesaproductasclassifiedinaccord
20、ancewiththisdocument.TheclassificationinaccordancewithsystemAwasmainlybasedonEN12070:1999whichhasbeenwithdrawnandreplacedbythisdocument.TheclassificationinaccordancewithsystemBismainlybaseduponstandardsusedaroundthePacificRim.Thisdocumentproposesaclassificationsystemforwireelectrodes,wiresandrodsint
21、ermsoftheirchemicalcompositionand,whererequired,intermsoftheyieldstrength,tensilestrengthandelongationoftheall-weldmetaldeposit.Theratioofyieldtotensilestrengthofweldmetalisgenerallyhigherthanthatofparentmetal.Usersshouldnotethatmatchingweldmetalyieldstrengthtoparentmetalyieldstrengthdoesnotnecessar
22、ilyensurethattheweldmetaltensilestrengthmatchesthatoftheparentmaterial.Wheretheapplicationrequiresmatchingtensilestrength,selectionoftheconsumableshouldbemadebyreferencetocolumn4ofTable4.Itshouldbenotedthatthemechanicalpropertiesofall-weldmetaltestpiecesusedtoclassifytheelectrodes,wiresandrodsvaryfr
23、omthoseobtainedinproductionjointsbecauseofdifferencesinweldingproceduresuchaselectrodesize,widthofweave,weldingpositionandmaterialcomposition.ISOInternationalStandard21952.202WeldingconsumablesWireelectrodes,wires,rodsanddepositsforgasshieldedarcweldingofcreep-resistingsteelsClassification1 ScopeThi
24、sdocumentspecifiesrequirementsforclassificationofwireelectrodes,wiresandrodsforgasshieldedmetalarcweldingandtungsteninert-gasweldingofcreep-resistingsteels,andfortheirdepositsintheas-weldedorpost-weldheat-treatedcondition.Onewireelectrodecanbetestedandclassifiedwithdifferentshieldinggases.Thisdocume
25、ntisacombinedspecificationprovidingforclassificationutilizingasystembaseduponthechemicalcompositionofwireelectrodes,wiresandrodswithrequirementsforyieldstrengthandaverageimpactenergyof47Jofall-weldmetal,orutilizingasystembaseduponthetensilestrengthoftheall-weldmetaldepositsandthechemicalcompositiono
26、fwireelectrodes,wiresandrods.a) Clauses,subclausesandtableswhichcarrythesuffix,systemAareapplicableonlytowireelectrodes,wires,rodsanddepositsclassifiedinaccordancewiththesystembaseduponthechemicalcompositionwithrequirementsforyieldstrengthandtheaverageimpactenergyof47Jofall-weldmetaldepositsunderthi
27、sdocument.b) Clauses,subclausesandtableswhichcarrythesuffix,rsystemBareapplicableonlytowireelectrodes,wires,rodsanddepositsclassifiedinaccordancewiththesystembaseduponthetensilestrengthofall-weldmetaldepositsandthechemicalcompositionofwireelectrodes,wiresandrodsunderthisdocument.c) Clauses,subclause
28、sandtableswhichdonothaveeitherthesuffixr,systemAorthe,systemBareapplicabletoallwireelectrodes,wires,rodsanddepositsclassifiedunderthisdocument.2 NormativereferencesThefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedr
29、eferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISO544,WeldingconsumablesTechnicaldeliveryconditionsforfillermaterialsandfluxesTypeofproduct,dimensions,tolerancesandmarkingsISO13916,WeldingGuidanceonthemeasurementOfpreheatingtemperature,interpasstemperatureandpreheat
30、maintenancetemperatureISO14175:2008,WeldingconsumablesGasesandgasmixturesforfusionweldingandalliedprocessesISO14344,WeldingconsumablesProcurementoffillermaterialsandfluxesISO15792-1:2020,WeldingconsumablesTestmethodsPart1:Preparationofall-weldmetaltestpiecesandspecimensinsteel,nickelandnickelalloysI
31、SO80000-1:2022,QuantitiesandunitsPart1:General3 TermsanddefinitionsNotermsanddefinitionsarelistedinthisdocument.ISOandIECmaintainterminologydatabasesforuseinstandardizationatthefollowingaddresses: ISOOnlinebrowsingplatform:availableathttps:/www.iso.org/ObP IECElectropedia:availableathttps:WWW.electr
32、opedia.org/4 Classification4.1 GeneralClassificationdesignationsarebasedupontwoapproachestoindicate: thechemicalcompositionofthewireelectrodewireorrod; tensileproperties;and impactproperties(systemAonly)oftheall-weldmetaldepositsobtainedwithagivenwireelectrode,wireorrod.Thetwodesignationapproachesin
33、cludeadditionaldesignatorsforsomeotherclassificationrequirements,butnotaltasisclearfromthefollowingsubclauses.Inmostcases,agivencommercialproductcanbeclassifiedinaccordancewithbothsystems.Then,eitherorbothclassificationdesignationscanbeusedfortheproduct.Awireelectrode,wireorrodshallbeclassifiedinacc
34、ordancewithitschemicalcompositionasgiveninTable3.Whenthewireelectrode,wire,rodordepositisclassifiedincombinationwithashieldinggas,theclassificationshallbeprefixedwithasymbolinaccordancewithClaUSe5asappropriate.4.2 ClassificationsystemsEachclassificationsystem,AandB,issplitintopartsasgiveninTabIe1.Ta
35、ble1Partsoftheclassificationsystems,AandBPartofclassificationdesignationClassificationsystemSystemAClassificationbychemicalcompositionSystemBClassificationbytensilestrengthandchemicalcomposition1Thefirstpartgivesasymbolindicatingtheproductorprocesstobeidentified;2Thesecondpartgivesasymbolindicatingt
36、hechemicalcompositionofthewireelectrode,wire,orrodused(seeTable3).Thesecondpartgivesasymbolindicatingthestrengthandelongationoftheall-weld-metaldepositinthepostweldheat-treatedcondition(seeTable4):3Thethirdpartgivesasymbolindicatingtheshieldingsasusedfsee5.4.2；4Thefourthpartgivesasymdo1indicatingthe
37、chemicalcompositionofwireelectrode,wireorrodused(seeTableJthe)NOTEAdashindicatesnotapplicable5 Symbolsandrequirements5.1 SymbolfortheproductorprocessThesymbolforthewireelectrode,wireorrodusedinthearcweldingprocessshallbetheletterG(gasshieldedmetalarcwelding)and/orW(gasshieldedarcweldingwithnon-consu
38、mabletungstenelectrode).5.2 Symbolforthechemicalcompositionofwireelectrodes,wires,androdsThesymbolinTabIS3indicatesthechemicalcompositionofthewireelectrode,wire,androddeterminedundertheconditionsgiveninClause9.5.3 Symbolforthemechanicalpropertiesofall-weldmetal5.3.1 Classificationbychemicalcompositi
39、on-SystemANosymbolshallbeusedforthemechanicalpropertiesoftheall-weldmetal.Theall-weldmetaldepositobtainedwiththewireelectrodes,wires,androdsinTabIe3underconditionsgiveninClaUSe6shallalsofulfilthemechanicalpropertyrequirementsspecifiedinTable4.5.3.2 Classificationbytensilestrengthandchemicalcompositi
40、on-SystemBThesymbolfortensilestrengthoftheall-weldmetaldepositproducedbythegasshieldedmetalarcweldingprocessandthetungsteninert-gasweldingprocessshallbeasgiveninTabIe2.Table2Symbolfortensilestrengthofall-weldmetaldeposit-Classificationbytensilestrengthandchemicalcomposition-SystemBSymbolMinimumtensi
41、lestrengthMPa49490525205555057570626206969078780ThecompletemechanicalpropertyrequirementsthatshallbefulfilledbythevariouscompositionsarespecifiedinTabIe4.5.4 Symbolforshieldinggas5.4.1 Classificationbychemicalcomposition-systemANosymbolshallbeusedfortheshieldinggas.5.4.2 Classificationbytensilestren
42、gthandchemicalcomposition-systemBThesymbolsforshieldinggasesshallbeinaccordancewithISO14175:2008,forexample: thesymbolIlshallbeusedwhentheclassificationhasbeenperformedwithshieldinggasISO14175-11,100%argon; thesymbolM12lformixedgases,shallbeusedwhentheclassificationhasbeenperformedwithshieldinggasIS
43、O14175-Ml2,butwithouthelium;thesymbolM13shallbeusedwhentheclassificationhasbeenperformedwithshieldinggasIS014175-M13; thesymbolM20,formixedgases,shallbeusedwhentheclassificationhasbeenperformedwithshieldinggasISO14175-M20,butwithouthelium. thesymbolM21lformixedgases,shallbeusedwhentheclassificationh
44、asbeenperformedwithshieldinggasISO14175-M21lbutwithouthelium;一thesymbolClshallbeusedwhentheclassificationhasbeenperformedwithshieldinggasISO14175-CLcarbondioxide;一thesymbolZisusedforanunspecifiedshieldinggas.Inallcases,theactualshieldinggasusedshallbeshownontestreports.ISo21952:2025(emSymbolforclacc
45、ordaChemicalcomposition0ISO21952-Aossificationinncewithtensilestrengthandchemicalcomposition01ISO21952-BCSiMnPSChemi(%Ni:alcompositionbymass)a,bCrMoCuTiVOtherelementsMoSi(1M3)0,08to0,150,50to0,800,70to1,300,0200,0200,40to0,60(MoSi)1M30,120,30to0,701,300,0250,0250,20-0,40to0,650,35MnMo0,08to0,150,05t
46、o0,251,30to1,700,0250,0250,45to0,653M3e0,120,60to0,901,10to1,600,0250,0250,40to0,650,503M3Te0,120,40to1,001,00to1,800,0250,0250,40to0,650,500,02to0,30MoVSi0,06to0,150,40to0,700,70to1,100,0200,0200,30to0,600,50to1,000,20to0,40CM0,120,10to0,40,20to1,000,0250,0250,40to0,900,40to0,650,40CMTe0,120,30to0,901,00to1,800,0250,0250,30to0,700,40to0,650,400,02to0,30CrMolSi(1CM3)0,08to0,140,50to0,800,80to1,200,0200,0200,90to1,300,40to0,65CrMoVlSi0,06to0,150,50to0,800,80to1,200,0200,0200,90to1,300,90to1,300,10to0,35ICM0,07to0,120,4to0,700,40to0,700,0250,0250,201,20to1,500,40to0,650,35ICMl0,120,20t
