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1、WORLDWIDEMaterialSpecificationGMW2ENGINEERINGMetalsSTANDARDSLowCarbonSheetSteel1.1MaterialDescription.Thematerialdesignation1ScopeisdefinedbytheGMWbasemetalspecificationnumber,steelproducttypeandsteelgrade.TheThisspecificationcoverstherequirementsforlowsteelproducttypeisdesigna
2、tedbyCRforcoldcarboncontinuouscaststeelforexposedandrolledproducts,orHRforhotrolledproducts.Aunexposedapplicationsandisapplicabletoalllownumeral(1,2,3,etc.)willdesignatethesteelgradecarbonsteelsheetproductsandcoatedsubstrates.formabilitylevel.ThesteelgradewillcorrespondtoContin
3、uouslyhotorcoldrolledflatproductsshallbethechemicalandmechanicalrequirementsassuppliedascoilsorsheet.HotrolledflatproductsshowninTable1,2and3.Athirdsuffix(C)maybeareusuallysuppliedinthicknesses>1.75mm.addedafterthesteelgradetodesignatealowTheseflatproductsareusedforcoldforminga
4、ndcarbonsteelmakingpractice.Thefinishtype,anformanufacturingofweldedtubes.Coldrolledflatalphacharacter,willdesignatethefinishasEproductswiththeappropriatesurfacetypeand(exposed),orU(unexposed).Inaddition,productssurfacefinisharesuitablefortheapplicationofwhicharenotcoatedshallh
5、avethewordsurfacecoatings(metallicplatingbymeltdippingor“uncoated”addedtothecall-outafterthesteeltype,thermalspraypainting,electrolyticplating,organicbutbeforethefinishdesignation.Theabovecoatingand/orothercoatings).Thisspecificationdescriptiveitemsareusedtogethertoformthedoesn
6、otapplytosteelforcasehardeningorstripcodingsystem.Examplesofthecodingsystemforapplications.Additionalrequirementsorengineeringpartdrawingsandmanufacturingagreementsshallbespecifiedbylocalbusinessengineeringdocumentsareshowninparagraph7.units(e.g.,GMNA,OpelITDC,GMdoBrazil,Holden
7、Ltd.,Fiat,etc.).1.2Cross-ReferenceofReplacedGMIO&NAOSpecifications.Note1GMWITDCNAOGMBGMW2M-ST-S-CR1QS1010Z0(QS1010ZK)GM6409M-CR1EMS.ME.1508.GradeEMGMW2M-ST-S-CR2QS1010Z0(QS1010ZK)GM6409M-CR2EMS.ME.1508.GradeEPGMW2M-ST-S-CR3QS1010Z0(QS1010ZK)GM6409M-CR3EMS.ME.1508.GradeEEPGMW2M-
8、ST-S-CR4QS1010Z0(QS1010ZK)GM6409M-CR4EMS.ME.1508.Grade
