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1、Designation:A123/A123M−12StandardSpeciÞcationforZinc(Hot-DipGalvanized)CoatingsonIronandSteel1ProductsThisstandardisissuedunderthefixeddesignationA123/A123M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearofla
2、strevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*way.InthecaseofordersinSIunits,alltestingandin
3、spectionshallbedoneusingthemetricequivalentofthetestor1.1Thisspecificationcoverstherequirementsforzincinspectionmethodasappropriate.InthecaseofordersinSIcoating(galvanizing)bythehot-dipprocessonironandsteelunits,suchshallbestatedtothegalvanizerwhentheorderisproductsma
4、defromrolledpressedandforgedshapes,castings,placed.plates,bars,andstrips.1.2Thisspecificationcoversbothunfabricatedproductsand2.ReferencedDocumentsfabricatedproducts,forexample,assembledsteelproducts,22.1ASTMStandards:structuralsteelfabrications,largetubesalreadybento
5、rweldedA47/A47MSpecificationforFerriticMalleableIronCast-beforegalvanizing,andwireworkfabricatedfromuncoatedingssteelwire.ThisspecificationalsocoverssteelforgingsandironA90/A90MTestMethodforWeight[Mass]ofCoatingoncastingsincorporatedintopiecesfabricatedbeforegalvanizin
6、gIronandSteelArticleswithZincorZinc-AlloyCoatingsorwhicharetoolargetobecentrifuged(orotherwisehandledA143/A143MPracticeforSafeguardingAgainstEmbrittle-toremoveexcessgalvanizingbathmetal).mentofHot-DipGalvanizedStructuralSteelProductsandNOTE1—Thisspecificationcoverstho
7、seproductspreviouslyaddressedProcedureforDetectingEmbrittlementinSpecificationsA123-78andA386-78.A153/A153MSpecificationforZincCoating(Hot-Dip)on1.3Thisspecificationdoesnotapplytowire,pipe,tube,orIronandSteelHardwaresteelsheetwhichisgalvanizedonspecializedorcontinuousA3
8、84/A384MPracticeforSafeguardingAgainstWarpagelines,ortosteellessthan22gage(0.0299in.)[0.76mm]thick.andDistortionDuringHot-DipGalvan
