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1、INTERNATIONA1.STANDARDISO630-3editionSecond2021-04Structura1.stee1.s一de1.iveryconditionsforfinegrainstructura1.stee1.sAciersdeconstruction一Par1.ie3:ConditionstechniquesdeIivraiscnpouraciersdeconstrctionagrainsfinsCOPYRIGHTPROTECTEDDOCUMENTISO2021岫rkdea/山thUcdOthcnviscjftc三orrtmcehDVBiwixuioiti08phnn
2、11UatiocBhrhotocp)Mng,ptbcatonpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanherequestedfromeitherISOattheaddressbe1.owOr1.sOXSmemberbodyinthecountryoftherequester.%,tft晒Iandonnet8CH-1214*crnicr,GenevaPhone：M1.22749O1.11帆禅igjWft.orgPub1.ishedinSwitzerhndContentsPageforew
3、ord2ScopeCNormativereferences-I1一ivTermsanddefinitions14C1.assificationanddesignation24.1 C1.assification4.2 Designation(gradesandqua1.ities)225Inforinationtobesupp1.iedbythepurchaser5.1Mandatoryinformation.22A2O36.1Stee1.makingprocess36.2De1.iverycondition36.3ChemicaItCompositiQn3o.3aHeatSnaiysis6.
4、3.2Productana1.ysis36.3.3Carbonequiva1.entva1.ue.36.4Mechanica1.Drooerties3A.1.Tensi1.e6.4.2CharpyVnotchimpactproperties36.5Surfacecondition3748Samp1.ingFrequencyoftesting48.1Verification48.2Testunits49410Marking4Annex(normative)Stee1.gradesS275,S355,S390,S420fS460andS500:Chemica1.Comnositionandmech
5、anica1.nronerties5AnnexB(normative)Stee1.gradesSG245,SG290fSG325,SG345,SG365,SG415andSG460:Cmnnstnnandmechanica1.nronerties15Bib1.iography一17ForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardsUudiugh(ISOmrimimbif1.4n11thvcekHpfff1.0brjfigb0dyhirHMa
6、a三daftbtarUiifwhRb(antetacommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Com
7、mission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenanceare瓶轩映也搬of1.SOIECdWM1.如。慨丽f1.勉*独那颇榔娜邦e&cordanceVMtheeditoria1.ru1.esoftheISO/IECDirectives.Part2(secwww.iso.org/dircctives).R描帖Onrights.d限腺顿n棍媳明绑SnS仲F辟吸出创即招fdoc晞X福犯蹦服.subjectofanypatentrightsid
8、entifiedduringthedeve1.opmentofthedocumentwi1.1.beintheIntroductionand/orontheISO1.istofpatentdec1.arationsreceived(seewww.iso.org/pa1.ents).Anytradeusedinthisconstitutenameendorsement.documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationonthevo1.untarynatureofstandards,theme
9、aningofISOspecifictermsandUR1.：www.iso.org/iso/foreword.htm1.Thisdocumentwasstructura1.purposes.preparedbyTechnica1.CommitteeISO/TC17,Stee1.,SubcommitteeSC3,Stee1.forThissecondeditioncance1.sandrep1.acesthefirstedition(ISO630-3:2012),whichhasbeentechnica1.1.yrevised.Themainchangescomparedtotheprevio
10、useditionareasfo1.1.ows： gradesS390N1.S390M,S500Mandpertainingrequirementshavebeenadded; app1.icab1.ethicknessrangeshavebeenaddedinthescope; additiona1.termsanddefinitionsconcerningheattreatmentshavebeende1.etedbecauseISO4885isinnormativereferencesofISO630-1；一qttth1.yparEhberenamed1.(impacttestingat
11、-50)tokeepqua1.ityEforimpacttestingat40 qua1.ityE(impacttestingat-40)hasbeenadded qua1.ityF(impacttestingat-60)hasbeenaddedtoS355NandS355M;一1.istofOPtiOnShasbeenintegratedinISO630-1; theformu1.aforCEVhasbeende1.etedbecausegiveninISO630-1； testunitshavebeenupdated; inTab1.es,thedesignationconcerningt
12、hicknesshavebeenchangedintonomina1.thickness; orderOf1.istingchemica1.e1.ementshasbeenupdatedforgradesOfAnneXinaccordancewithISO6306; bib1.iographyhasbeenupdated； thecontentofthedocumenthasbeenupdatedtoharmonizewitha1.1.partsofISO630.A1.istofa1.1.partsintheISO630seriescanbefoundontheISOwebsite.Anyfe
13、edbackorquestionsonthisdocumentshou1.dbedirectedtotheusersnationa1.standardsbody.Acomp1.ete1.istingofthesebodiescanbefoundatwww.iso.org/members.htm1.Structura1.stee1.s一Technica1.de1.iveryconditionsforfine-grainstructura1.stee1.s1 Scopethermomechanica1.processeitheas-ro1.1.edconditions.app1.ieson1.y)
14、,stee1.noma1.izednorma1.izedreversingmi1.1.,CovereddocumentAnnexcoversGradesgradesSG245,qua1.ities.SG325,GradesSG34S,SG365,SG41SS420,SG460andcoveredwithminimumnomina1.documentareapp1.icah1.emaximumnomina1.thicknessf1.ats,sectionsandgradesmaximumnomina1.amaximumofnomina1.thicknessSG290.mmforgradesSG345rSG365andSG460,andaInternationa1.Standards:NOTE11.istsofstandardscoveredbyISO/TC17/SC12andISO/TC5/SC1areavai1.ab1.eontheISOwebsite.2 Normativereferencesconstitutesrequirements1.atesteditiondocument.referencedreferences,(inc1.udingamendments)app1.
