ASTM-A123-A0123M-13

Designation:A123/A123M−13StandardSpecificationforZinc(Hot-DipGalvanized)CoatingsonIronandSteelProducts1ThisstandardisissuedunderthefixeddesignationA123/A123M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecificationcoverstherequirementsforzinccoating(galvanizing)bythehot-dipprocessonironandsteelproductsmadefromrolledpressedandforgedshapes,castings,plates,bars,andstrips.1.2Thisspecificationcoversbothunfabricatedproductsandfabricatedproducts,forexample,assembledsteelproducts,structuralsteelfabrications,largetubesalreadybentorweldedbeforegalvanizing,andwireworkfabricatedfromuncoatedsteelwire.Thisspecificationalsocoverssteelforgingsandironcastingsincorporatedintopiecesfabricatedbeforegalvanizingorwhicharetoolargetobecentrifuged(orotherwisehandledtoremoveexcessgalvanizingbathmetal).NOTE1—ThisspecificationcoversthoseproductspreviouslyaddressedinSpecificationsA123-78andA386-78.1.3Thisspecificationdoesnotapplytowire,pipe,tube,orsteelsheetwhichisgalvanizedonspecializedorcontinuouslines,ortosteellessthan22gage(0.0299in.)[0.76mm]thick.1.4Thegalvanizingofhardwareitemsthataretobecentrifugedorotherwisehandledtoremoveexcesszinc(suchasboltsandsimilarthreadedfasteners,castingsandrolled,pressedandforgeditems)shallbeinaccordancewithSpeci-ficationA153/A153M.1.5Fabricatedreinforcingsteelbarassembliesarecoveredbythepresentspecification.ThegalvanizingofseparatereinforcingsteelbarsshallbeinaccordancewithSpecificationA767/A767M.1.6Thisspecificationisapplicabletoordersineitherinch-poundunits(asA123)orSIunits(asA123M).Inch-poundunitsandSIunitsarenotnecessarilyexactequivalents.Withinthetextofthisspecificationandwhereappropriate,SIunitsareshowninparentheses.Eachsystemshallbeusedindependentlyoftheotherwithoutcombiningvaluesinanyway.InthecaseofordersinSIunits,alltestingandinspectionshallbedoneusingthemetricequivalentofthetestorinspectionmethodasappropriate.InthecaseofordersinSIunits,suchshallbestatedtothegalvanizerwhentheorderisplaced.2.ReferencedDocuments2.1ASTMStandards:2A47/A47MSpecificationforFerriticMalleableIronCast-ingsA90/A90MTestMethodforWeight[Mass]ofCoatingonIronandSteelArticleswithZincorZinc-AlloyCoatingsA143/A143MPracticeforSafeguardingAgainstEmbrittle-mentofHot-DipGalvanizedStructuralSteelProductsandProcedureforDetectingEmbrittlementA153/A153MSpecificationforZincCoating(Hot-Dip)onIronandSteelHardwareA384/A384MPracticeforSafeguardingAgainstWarpageandDistortionDuringHot-DipGalvanizingofSteelAssembliesA385PracticeforProvidingHigh-QualityZincCoatings(Hot-Dip)A767/A767MSpecificationforZinc-Coated(Galvanized)SteelBarsforConcreteReinforcementA780PracticeforRepairofDamagedandUncoatedAreasofHot-DipGalvanizedCoatingsA902TerminologyRelatingtoMetallicCoatedSteelProd-uctsB6SpecificationforZincB487TestMethodforMeasurementofMetalandOxideCoatingThicknessbyMicroscopicalExaminationofCrossSectionB602TestMethodforAttributeSamplingofMetallicandInorganicCoatingsB960SpecificationforPrimeWesternGrade-Recycled(PWG-R)Zinc1ThisspecificationisunderthejurisdictionofASTMCommitteeA05onMetallic-CoatedIronandSteelProductsandisthedirectresponsibilityofSubcom-mitteeA05.13onStructuralShapesandHardwareSpecifications.CurrenteditionapprovedNov.1,2013.PublishedNovember2013.Originallyapprovedin1928.Lastpreviouseditionapprovedin2012asA123/A123M-12.DOI:10.1520/A0123_A0123M-13.2ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.*ASummaryofChangessectionappearsattheendofthisstandardCopyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959.UnitedStates1CopyrightASTMInternational,100BarrHarborDrive,WestConshohocken,Pennsylvania19428,USADistributedunderASTMlicenseagreementbyShanghaiInstituteofStandardization(SIS)Tel:[phone]ASTMInternational版权所有,100BarrHarbor,WestConshohocken,Pennsylvania,19428,USA由上海市标准化研究院（SIS）根据ASTM授权协议进行销售上海市长乐路1217号邮编：200031E376PracticeforMeasuringCoatingThicknessbyMagnetic-FieldorEddy-Current(Electromagnetic)Test-ingMethods3.Terminology(SeeFig.1)3.1Definitions:3.1.1Thefollowingtermsanddefinitionsarespecifictothisspecification.TerminologyA902containsothertermsanddefinitionsrelatingtometallic-coatedsteelproducts.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1averagecoatingthickness,n—theaverageofthreespecimencoatingthicknesses.3.2.2black,adj—denotestheconditionofnotgalvanizedorotherwisecoated.Forpurposesofthisspecificationtheword“black”doesnotrefertothecolororconditionofsurface,ortoasurfacedepositorcontamination.3.2.3coatingthicknessgrade,n—thenumericalvaluefromTable1attheintersectionofamaterialcategoryandathicknessrange.3.2.4grossdrossinclusions,n—theiron/zincintermetallicspresentinagalvanizedcoa