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1、Designation:A153/A153M?16aAmericanAssociationStateHighwayandTransportationOfficialsStandardAASHTONo.M232StandardSpeciTcationfor1ZincCoating(Hot-Dip)onIronandSteelHardwareThisstandardisissuedunderthe?xeddesignationA153/A153M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforigina
2、ladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(′)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*2.ReferencedDocuments21.
3、1Thisspeci?cationcoverszinccoatingsappliedbythe2.1ASTMStandards:hot-dipprocessonironandsteelhardware.Thehot-dipA90/A90MTestMethodforWeight[Mass]ofCoatingongalvanizingprocessconsistsofpartsbeingimmersedinmoltenIronandSteelArticleswithZincorZinc-AlloyCoatingszincforasufficienttimetoallowametal
4、lurgicalreactionA143/A143MPracticeforSafeguardingAgainstEmbrittle-betweenironfromthesteelsurfaceandthemoltenzinc,mentofHot-DipGalvanizedStructuralSteelProductsandresultingintheformationofZn/FealloylayersbondingtheProcedureforDetectingEmbrittlementcoatingtothesteelsurface.A780PracticeforRepai
5、rofDamagedandUncoatedAreasofHot-DipGalvanizedCoatings1.2Thisspeci?cationisintendedtobeapplicabletohard-A902TerminologyRelatingtoMetallicCoatedSteelProd-wareitemsthatarecentrifugedorotherwisehandledtoremoveuctsexcessgalvanizingbathmetal(freezinc).CoatingthicknessB6Speci?cationforZincgraderequ
6、irementsre?ectthis.B487TestMethodforMeasurementofMetalandOxide1.3FastenersthatmustcomplywiththeFastenerQualityCoatingThicknessbyMicroscopicalExaminationofActrequirespeci?cstatisticalsamplingduringtheinspectionCrossSectionofthefastenerlots.RequirementsforthesamplingoftheseB960Speci?cationforP
7、rimeWesternGrade-RecycledfastenerscanbefoundinF2329/F2329M.(PWG-R)ZincE376PracticeforMeasuringCoatingThicknessby1.4Thisspeci?cationisapplicabletoordersineitherMagnetic-FieldorEddy-Current(Electromagnetic)Test-inch-poundunits(asA153)orinSIunits(asA1
