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1、STANDARDSAustraliaSstandardsNEWZEA1.ANDTEMANATAiniKANOAOAOTEAROAAustralian/NewZealandStandardTmMetallicandotherinorganiccoatingsElectroplatedcoatingsofzincwithsupplementarytreatmentsonironorsteel(ISO2081:2018,MOD)ThisJointAustraIianZNewZealandStandardTmwaspreparedbyJointTechnicalCommitteeMT-009,Meta
2、lFinishing.ltwasapprovedonbehalfoftheCouncilofStandardsAustraliaon03March2023andbytheNewZealandStandardsApprovalBoardon01March2023.ThisStandardwaspublishedon17March2023.AustralianAustralianAustralianAustralianAustralianAluminiumCouncilChamberofCommerceandIndustryIndustryGroupPaintManufacturersFedera
3、tionSteelInstituteThefollowingarerepresentedonCommitteeMT-009:AustralasianCorrosionAssociationAustralasianInstituteofSurfaceFinishingBuildingResearchAssociationofNewZealand(BRANZ)BureauofSteelManufacturersofAustraliaCSIROEngineersAustraliaGalvanizersAssociationofAustraliaMaterialsAustraliaUniversity
4、ofAuckland(NewZealand)ThisStandardwasissuedindraftformforcommentasDRAS/NZS1789:2022.KeepingStandardsUhtO-dateEnsureyouhavethelatestversionsofourpublicationsandkeepup-to-dateaboutAmendments,Rulings,Withdrawals,andnewprojectsbyvisiting:WWW.standards.ora.auwww.standards.govt.nzISBN9781761390913Australi
5、an/NewZealandStandardTMMetallicandotherinorganiccoatingsElectroplatedcoatingsofzincwithsupplementarytreatmentsonironorsteel(ISO2081:2018,MOD)OriginatedasASK144-1963,ASCK8-1963andASCK101965.PreviouseditionsAS17891984andAS17911986.Revised,amalgamatedandredesignatedasAS17892003.Jointlyrevisedandredesig
6、natedasAS/NZS1789:2023.COPYRIGHTISO2023AllrightsreservedStandardsAustralia1.imited/theCrowninrightofNewZealand,administeredbytheNewZealandStandardsExecutive2023Allrightsarereserved.Nopartofthisworkmaybereproducedorcopiedinanyformorbyanymeans,electronicormechanical,includingphotopying,withoutthewritt
7、enpermissionofthepublisher,unlessotherwisepermittedundertheCopyrightAct1968(Cth)ortheCopyrightAct1994(NewZealand).PrefaceThisStandardwaspreparedbytheJointStandardsAustraliaZStandardsNewZealandCommitteeMT-009,MetalFinishing,tosupersedeAS1789:2003,Electroplatedzinc(electrogalvanized)coatingsonferrousa
8、rticles(batchprocess).Theobjectiveofthisdocumentistospecifyrequirementsforelectroplatedcoatingsofzincwithsupplementarytreatmentsonironorsteel.ltincludesinformationtobesuppliedbythepurchasertotheelectroplater,andtherequirementsforheattreatmentbeforeandafterelectroplating.Thisdocumentisnotapplicableto
9、zinccoatingsapplied一(a) tosheet,striporwireinthenon-fabricatedform;(b) toclose-coiledSpringsjor(C)forpurposesotherthanprotectiveordecorative.Thisdocumentdoesnotspecifyrequirementsforthesurfaceconditionofthebasismetalpriortoelectroplatingwithzinc.However,defectsinthesurfaceofthebasismetalcanadversely
10、affecttheappearanceandperformanceofthecoating.Thecoatingthicknessthatcanbeappliedtothreadedcomponentscanbelimitedbydimensionalrequirements,includingclassorfit.Thisdocumentisanadoptionwithnationalmodifications,andhasbeenreproducedfrom,ISO2081:2018Metallicandotherinorganiccoatings-Electroplatedcoating
11、sofzincwiihSupplementaiytreatmentsonironorsteel.ThemodificationsareadditionalrequirementsandaresetoutinAppendixZZ,whichhasbeenaddedattheendofthesourcetext.AppendixZZliststhemodificationstoISO2081:2018,fortheapplicationofthisdocumentinAustraliaandNewZealand.AsthisdocumenthasbeenreproducedfromanIntern
12、ationaldocument,afullpointsubstitutesforacommawhenreferringtoadecimalmarker.AustralianorAustralianZNewZealandStandardsthatareidenticaladoptionsofinternationalnormativereferencesmaybeusedinterchangeably.RefertotheonlinecatalogueforinformationonspecificStandcirds.Theterms11normative,and11informativear
13、eusedinStandardstodefinetheapplicationoftheappendicesorannexestowhichtheyapply.A,normativeappendixorannexisanintegralpartofaStandard,whereasant4infbrmative,appendixorannexisonlyforinformationandguidance.ContentsNationalForewordivForewordvIntroductionVi1 Scopei2 Normativereferences3 Terms,definitions
14、,abbreviatedtermsandsymbols23.1 Termsanddefinitions23.2 Abbreviatedterms23.3 Symbols24 Informationtobesuppliedbythepurchasertotheelectroplater24.1 Essentialinformation24.2 Additionalinformation35 Designation35.1 General35.2 Designationspecification35.3 Designationofthebasismaterial45.4 Designationof
15、heattreatmentrequirements46 Requirements56.1 Appearance56.2 Thickness56.3 Trivalentchromiumconversioncoatingsandothersupplementarytreatments6.4 Adhesionofzincandtrivalentchromiumconversioncoatings6.5 Acceleratedcorrosiontesting6.5.1 Neutralsaltspraytest6.5.2 Corrosionrating6.6 Stressreliefheattreatm
16、entsbeforecleaningandmetaldeposition6.7 Hydrogen-embrittlement-reliefheattreatmentsafterelectroplating7 Sampling7Annex A (normative)Designationofsupplementarytreatments8Annex B (normative)Measurementofaveragethicknessofcoatingonsmallarticles10Bibliography11AppendixZZ(normative)ModificationstoISO2081
17、:2018forAustraliaandNewZealand12NationalForewordSeethetablebelowforAustralianorAustralianZNewZealandStandardsthatmaybeusedinplaceoftheISOStandardsreferencedthroughoutthedocument.ISOStandardReplacewithISOl463,Metallicandoxidecoatings-Measurementofcoatingthickness-MicroscopicalmethodS2331.1.12001Metho
18、dsoftestformetallicandrelatedcoatings,1.ocalthicknesstests-Micrographicexaminationofcross-sectionsISO2080,Metallicandotherinorganiccoatings-Surfacetreatment,metal1icandotherinorganiccoatings-VocabularyAS41082005Metalfinishing-GlossaryoftermsinelectroplatingandrelatedprocessesISO2819,Metalliccoatings
19、onmetallicsubstrates-Electrodepositedandchemicallydepositedcoatings-ReviewofmethodsavailablefortestingadhesionAS2331.4.12001,Methodsoftestformetallicandrelatedcoatings,Method4.1:Physicaltests-QualitativeadhesiontestsISO9227,Corrosiontestsinartificialatmospheres-SaltspraytestsAS2331.3.12001,Methodsof
20、testformetallicandrelatedcoatings,Method3.IiCorrosionandrelatedpropertytests-Neutralsaltspraytest(NSStest)AS2331.3.22001,Methodsoftestformetallicandrelatedcoatings,Method3.IiCorrosionandrelatedpropertytests-Aceticacidsaltspraytest(ASStest)S2331.3.32001,Methodsoftestformetallicandrelatedcoatings,Meth
21、od3.IiCorrosionandrelatedpropertytests-Copperacceleratedaceticacidsaltspraytest(CASStest)ISO10289,MethodsforcorrosiontestingOfmetallicandotherinorganiccoatingsonmetallicsubstrates-RatingoftestspecimensandmanufacturedarticlessubjectedtocorrosiontestAS12472004,MetalliccoatingsRatingoftestspecimensandm
22、anufacturedarticlessubjecttocorrosiontestsForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichat
23、echnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatCommitteeJntemationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)Onallmattersofelectrotechnicalstandardization.Theproce
24、duresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives5Partl.InparticularthedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentsshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectivesjPart2(SeeWWW.iso.
25、org/directives).Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.DetailsofanypatentrightsidentifiedduringthedevelopmentofthedocumentwillbeintheIntroductionand/orontheISOlistofpatentdecl
26、arationsreceived(seewww.iso.org/patents).Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationonthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISOsadher
27、encetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT)SeethefollowingUR1.:WWW.iso.org/iso/foreword.html.ThisdocumentwaspreparedbytheEuropeanCommitteeforStandardization(CEN)TechnicalCommitteeCEN/TC262,Metallicandotherinorganiccoatings,incollaborationwithISOTechnicalCommittee
28、TC107,Metallicandotherinorganiccoatings,SubcommitteeSC3,Electrodepositedcoatingsandrelatedfinishes,inaccordancewiththeagreementontechnicalcooperationbetweenISOandCEN(ViennaAgreement).Thisfourtheditioncancelsandreplacesthethirdedition(IS02081:2008),whichhasbeentechnicallyrevised.Thefollowingmainchang
29、eshavebeenmade:一thenumberofnormativereferenceshasbeenreduced;referencetoASTMBl17hasbeenreplacedwithISO9227;一someabbreviatedtermshavebeenremoved;一coatingdesignationshavebeenmodified;一referencetoISO1463forthicknessmeasurementhasbeenincreased;一referencetouseoftrivalentchromiumhasbeenincreased一reference
30、touseOfhexavalentchromiumhasbeenreduced;一referencetoISO19598inrelationtosupplementaryCr(VI)-freetreatmenthasbeenadded;一Tables1and2havebeenreplacedwitharevisedTable1onneutralsaltspraycorrosionresistance;一referencetoISO15330inrelationtohydrogenembrittlementtestinghasbeenadded;一supplementarytreatmentde
31、signationshavebeenmodified;一AnnexChasbeenremoved.IntroductionZinccoatingsareappliedtoironorsteelarticlesforprotectiveanddecorativepurposesbyelectrodepositionfromacidzincchloride,alkalinenon-cyanidezinc,andalkalinezinccyanidesolutions.Electroplated,brightzinccoatingsarepopularandtheprocessesforprepar
32、ingbrightzinccoatingsarewidelyused.Theabilityofazinccoatingtopreventcorrosionisafunctionofitsthicknessandthetypeofserviceconditionstowhichitisexposed.Forexample,therateofcorrosionofzincwillgenerallybegreaterinindustrialexposuresthaninruralones.Thetypeofserviceconditionshould,therefore,betakenintocon
33、siderationwhenspecifyingtheminimumcoatingthickness.Trivalentchromateconversioncoatingsandothersupplementarytreatmentsenhancethecorrosionresistanceofelectrodepositedzinccoatingsandarecommonlyappliedafterelectroplating.Becausetheappearanceandserviceabilityofzinccoatingsdependsonthesurfaceconditionofth
34、ebasismetal,agreementshouldbereachedbetweentheinterestedpartiesthatthesurfacefinishofthebasismetalissatisfactoryforelectroplating.Trivalentchromateconversioncoatingsareomitted,orreplacedbyotherconversioncoatings,atthespecificrequestofthepurchaser.Thisdocumentprovidesthecodesforalltypesofchromateconv
35、ersionandothersupplementarycoatings.WithreferencetoCr(VI)-freeconversioncoatings,attentionisdrawntoIS019598.ISO19598isapplicabletozinc,zinc-ironandzinc-nickelplating,whereonlytrivalentsystemsarerequired.DuetotheREACHRegulationstheuseofhexavalentchromiumcompoundswillbebannedinEuropefromSeptember2017e
36、xceptwherespecificallyauthorized.Alternativeconversioncoatingsorsubstitutes,canbeusedandarerequiredtosatisfythecorrosionrequirementsgiveninthisdocument.StandarddesignationsformetalsandalloyscanbefoundinReferences12to16.AustraIianZNewZealandStandardMetallicandotherinorganiccoatingsElectroplatedcoatin
37、gsofzincwithsupplementarytreatmentsonironorsteel(ISO2081:2018,MOD)WARNINGThisdocumentcaUsfortheuseOfcubstancesand/orproceduresthatcanbeinjurioustohealthifadequatesafetymeasuresarenottakenThisdocumentdoesnotaddressanyhealthhazardsafetyorenvironmentalmattersassociatedwithitsuse.ltistheresponsibilityof
38、theproducers,purchasersand/oruserofthisdocumenttoestablishappropriatehealthafetyandenvironmentallyacceptablepractices.1 ScopeThisdocumentspecifiesrequirementsforelectroplatedcoatingsofzincwithsupplementarytreatmentsonironorsteel.ltincludesinformationtobesuppliedbythepurchasertotheelectroplater,andth
39、erequirementsforheattreatmentbeforeandafterelectroplating.Itisnotapplicabletozinccoatingsappliedtosheet,striporwireinthenon-fabricatedform,一toclose-coiledsprings,or一forpurposesotherthanprotectiveordecorative.Thisdocumentdoesnotspecifyrequirementsforthesurfaceconditionofthebasismetalpriortoelectropla
40、tingwithzinc.However,defectsinthesurfaceofthebasismetalcanadverselyaffecttheappearanceandperformanceofthecoating.Thecoatingthicknessthatcanbeappliedtothreadedcomponentscanbelimitedbydimensionalrequirements,includingclassorfit.2 NormativereferencesThefollowingdocumentsarereferredtointhetextinsuchaway
41、thatsomeoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISO1463,Metallicandoxidecoatings-Measurementofcoatingthickness-MicroscopicalmethodISO2064,Metalli
42、candotherinorganiccoatings-DefinitionsandconventionsconcerningthemeasurementofthicknessISO2080,MetallicandotherinorganiccoatingsSurfacetreatment,metallicandotherinorganiccoatingsVocabularyISO2819,Metalliccoatingsonmetallicsubstrates-Electrodepositedandchemicallydepositedcoatings-Reviewofmethodsavail
43、ablefortestingadhesionISO3613,MetallicandotherinorganiccoatingsChromateconversioncoatingsonzinc,cadmium,aluminium-zincalloysandzinc-aluminiumalloysTestmethodsISO4519,ElectrodepositedmetalliccoatingsandrelatedfinishesSamplingproceduresforinspectionbyattributesISO9227,Corrosiontestsinartificialatmosph
44、eres-SaltspraytestsISO9587,MetallicandotherinorganiccoatingsPretreatmentofironorsteeltoreducetheriskofhydrogenembrittlementISO9588,MetallicandotherinorganiccoatingsPost-coatingtreatmentsofironorsteeltoreducetheriskofhydrogenembrittlementISO10289,Methodsforcorrosiontestingofmetallicandotherinorganicc
45、oatingsonmetallicsubstrates一RatingoftestspecimensandmanufacturedarticlessubjectedtocorrosiontestsISO10587,MetallicandotherinorganiccoatingsTestforresidualembrittlementinbothmetallic-coatedanduncoatedexternally-threactedarticlesandrodsInclinedwedgemethodISO15330,FastenersPreloadingtestforthedetection
46、ofhydrogenembrittlementParallelbearingsurfacemethodISO15724,MetallicandotherinorganiccoatingsElectrochemicalmeasurementofdiffsiblehydrogeninsteelsBamacleelectrodemethod3 Terms,definitions,abbreviatedtermsandsymbols3.1 TermsanddefinitionsForthepurposesofthisdocument,thetermsanddefinitionsgiveninISO20
47、64andISO2080apply.ISOandIECmaintainterminologicaldatabasesforuseinstandardizationatthefollowingaddresses:一IECElectropediaiavailableathttp:/www.electropedia.org/一ISOOnlinebrowsingplatfbrm:availableathttp:/www.iso.org/obp3.2 AbbreviatedtermsERhydrogenembrittlementreliefheattreatmentSRstressreliefheatt
48、reatmentT2organicsealant33SymbolsFechemicalsymbolforironZnchemicalsymbolforzinc4Informationtobesuppliedbythepurchasertotheelectroplater4.1 EssentialinformationThefollowinginformationshallbesuppliedtotheelectroplaterinwriting,forexample,inthecontractorpurchaseorder,oronengineeringdrawings:a) thereferencetothisdocument,i.e.ISO2081,andthedesignation(seeClause5);b) thesignificantsurfaceindicated,forexample,bydrawingsorbytheprovisionofsuitab
