【astm標(biāo)準(zhǔn)】a 123 - a 123m - 15

1、Designation:A123A123M?15StardSpecificationfZinc(HotDipGalvanized)CoatingsonIronSteelProducts1ThisstardisissuedunderthefixeddesignationA123A123Mthenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptionin

2、thecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.ThisstardhasbeenapprovedfusebyagenciesoftheU.S.Departmento

3、fDefense.1.Scope1.1Thisspecificationcoverstherequirementsfzinccoating(galvanizing)bythehotdipprocessonironsteelproductsmadefromrolledpressedfgedshapescastingsplatesbarsstrips.1.2Thisspecificationcoversbothunfabricatedpro

4、ductsfabricatedproductsfexampleassembledsteelproductsstructuralsteelfabricationslargetubesalreadybentweldedbefegalvanizingwirewkfabricatedfromuncoatedsteelwire.Thisspecificationalsocoverssteelfgingsironcastingsincpatedin

5、topiecesfabricatedbefegalvanizingwhicharetoolargetobecentrifuged(otherwisehledtoremoveexcessgalvanizingbathmetal).NOTE1—ThisspecificationcoversthoseproductspreviouslyaddressedinSpecificationsA12378A38678.1.3Thisspecifica

6、tiondoesnotapplytowirepipetubesteelsheetwhichisgalvanizedonspecializedcontinuouslinestosteellessthan22gage(0.0299in.)[0.76mm]thick.1.4Thegalvanizingofhardwareitemsthataretobecentrifugedotherwisehledtoremoveexcesszinc(suc

7、hasboltssimilarthreadedfastenerscastingsrolledpressedfgeditems)shallbeinaccdancewithSpecificationA153A153M.1.5Fabricatedreinfcingsteelbarassembliesarecoveredbythepresentspecification.Thegalvanizingofseparatereinfcingstee

8、lbarsshallbeinaccdancewithSpecificationA767A767M.1.6Thisspecificationisapplicabletodersineitherinchpoundunits(asA123)SIunits(asA123M).InchpoundunitsSIunitsarenotnecessarilyexactequivalents.Withinthetextofthisspecificatio

9、nwhereappropriateSIunitsareshowninparentheses.Eachsystemshallbeusedindependentlyoftheotherwithoutcombiningvaluesinanyway.InthecaseofdersinSIunitsalltestinginspectionshallbedoneusingthemetricequivalentofthetestinspectionm

10、ethodasappropriate.InthecaseofdersinSIunitssuchshallbestatedtothegalvanizerwhenthederisplaced.2.ReferencedDocuments2.1ASTMStards:2A47A47MSpecificationfFerriticMalleableIronCastingsA90A90MTestMethodfWeight[Mass]ofCoatingo

11、nIronSteelArticleswithZincZincAlloyCoatingsA143A143MPracticefSafeguardingAgainstEmbrittlementofHotDipGalvanizedStructuralSteelProductsProcedurefDetectingEmbrittlementA153A153MSpecificationfZincCoating(HotDip)onIronSteelH

12、ardwareA384A384MPracticefSafeguardingAgainstWarpageDisttionDuringHotDipGalvanizingofSteelAssembliesA385PracticefProvidingHighQualityZincCoatings(HotDip)A767A767MSpecificationfZincCoated(Galvanized)SteelBarsfConcreteReinf

13、cementA780PracticefRepairofDamagedUncoatedAreasofHotDipGalvanizedCoatingsA902TerminologyRelatingtoMetallicCoatedSteelProductsB6SpecificationfZincB487TestMethodfMeasurementofMetalOxideCoatingThicknessbyMicroscopicalExamin

14、ationofCrossSectionB602TestMethodfAttributeSamplingofMetallicInganicCoatingsB960SpecificationfPrimeWesternGradeRecycled(PWGR)Zinc1ThisspecificationisunderthejurisdictionofASTMCommitteeA05onMetallicCoatedIronSteelProducts

15、isthedirectresponsibilityofSubcommitteeA05.13onStructuralShapesHardwareSpecifications.CurrenteditionapprovedOct.12015.PublishedOctober2015.iginallyapprovedin1928.Lastpreviouseditionapprovedin2013asA123A123M13.DOI:10.1520

16、A0123_A0123M15.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.ASummaryofChangessectionappearsatt

17、heendofthisstardCopyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates13.2.2blackadj—denotestheconditionofnotgalvanizedotherwisecoated.Fpurposesofthisspecificationthewd“black”doesnot

18、refertothecolconditionofsurfacetoasurfacedepositcontamination.3.2.3coatingthicknessgraden—thenumericalvaluefromTable1attheintersectionofamaterialcategyathicknessrange.3.2.4grossdrossinclusionsn—theironzincintermetallicsp

19、resentinagalvanizedcoatinginafmotherthanfinelydispersedpimples.3.2.4.1Discussion—Theseinclusionswouldcreateanexposedsteelspotiftheywereremovedfromthecoating.Theseinclusionsareraisedsurfacesareeasilyknockedoffthroughconta

20、ctwithliftingstrapschainstoolsfixturesothergalvanizedparts.3.2.5materialcategyn—thegeneralclasstypeofmaterialprocessofmanufactureboththatnominallydescribesaunitofproductfromwhichaunitofproductismade.Fexamplebargratingbel

21、ongstothecategy“strip”hrailbelongstothecategy“pipe”etc.3.2.6multispecimenarticlen—aunitofproductwhosesurfaceareaisgreaterthan160in.2[100000mm2].Fthicknesstestingpurposesarticleswhosesurfaceareaisgreaterthan160in.2aresubd

22、ividedintothreecontinuouslocalsectionsnominallyequalinsurfaceareaeachofwhichconstitutesaspecimen.InthecaseofanysuchlocalsectioncontainingmethanonematerialcategysteelthicknessrangeasdelineatedinTable1thatsectionwillcontai

23、nmethanonespecimen(seeFig.1).3.2.7samplen—acollectionofindividualunitsofproductfromasinglelotedinaccdancewithSection7intendedtorepresentthatlotfacceptance.Ifasampleistakenasrepresentingthelotfacceptancethesampleshallbeta

24、kenatromfromthelotwithoutregardtotheperceivedqualityappearanceofanyindividualunitinthelotbeingsampled.Thesampleconsistsofonemetestarticles.3.2.8singlespecimenarticlen—aunitofproductwhosesurfaceareaisequaltolessthan160in.

25、2[100000mm2]thatiscentrifugedotherwisesimilarlyhledinthegalvanizingprocesstoremoveexcessgalvanizingbathmetal(freezinc).Fthicknesstestingpurposestheentiresurfaceareaofeachunitofproductconstitutesaspecimen.Inthecaseofanysu

26、charticlecontainingmethanonematerialcategysteelthicknessrangeasdelineatedinTable1thatarticlewillcontainmethanonespecimen(seeFig.1).3.2.9specimenn—thesurfaceofanindividualtestarticleaptionofatestarticleuponwhichthicknessm

27、easurementsaretobeperfmedwhichisamemberofalotamemberofasamplerepresentingthatlot.Fmagicthicknessmeasurementsspecimenexcludesanyareaofthesurfacewhichissubjecttoprocesses(suchasflamecuttingmachiningthreadingetc.)thatcanbee

28、xpectedtoresultinsurfaceconditionsnotrepresentativeofthegeneralsurfaceconditionofthetestarticleisdisqualifiedbythemeasurementmethod.Theminimumaveragecoatingthicknessgradefanyspecimenshallbeonecoatinggradebelowthatrequire

29、dftheappropriatematerialcategythicknessinTable1.Faunitofproductwhosesurfaceareaisequaltolessthan160in.2[100000mm2]theentiresurfaceareaofeachtestarticleconstitutesaspecimen.Inthecaseofanarticlecontainingmethanonematerialc

30、ategysteelthicknessrangeasdelineatedinTable1thatarticlewillcontainmethanonespecimenasappropriate(seeFig.1).3.2.10specimencoatingthicknessn—theaveragethicknessfromnolessthanfivetestmeasurementsonaspecimenwheneachmeasureme

31、ntlocationisedtoprovidethewidestdispersion(inallapplicabledirections)oflocationsfthesteelcategyofthetestarticlewithintheconfinesofthespecimenvolume.3.2.11testarticlen—anindividualunitofproductthatisamemberofthesamplethat

32、isexaminedfconfmancetoapartofthisspecification.4.deringInfmation4.1dersfcoatingsprovidedunderthisspecificationshallincludethefollowing:4.1.1Quantity(numberofpiecestobegalvanized)totalweight.4.1.2Deion(typesizeofproducts)

33、weight.4.1.3ASTMspecificationdesignationyearofissue.4.1.4Materialidentification(see5.1)surfaceconditioncontamination.4.1.5Samplingplanifdifferentfrom7.3.4.1.6Specialtestrequirements(see8.1).4.1.7Specialrequirements(speci

34、alstackingheaviercoatingweightetc.).4.1.8Taggingpieceidentificationmethod.5.MaterialsManufacture5.1SteelIron—ThespecificationgradedesignationtypedegreeofsurfacecontaminationoftheironTABLE1MinimumAverageCoatingThicknessGr

35、adebyMaterialCategyMaterialCategyAllSpecimensTestedSteelThicknessRange(Measured)in.[mm]1?16[1.6]$1?16to1?8[$1.6to3.2]$1?8to3?16[$3.2to4.8]$3?16to1?4[$4.8to6.4]$1?4to5?8[$6.4to16.0]$5?8[$16.0]StructuralShapes4565757510010