ISO-10682014紧固件-非电解锌片涂层

INTERNATIONALSTANDARDISO10683Secondedition201^05-15Fasteners—Non-electrolyticallyappliedzincflakecoatingsFixations—Rev&cmcgnonelectrolyniquesdezincIameliaireReferencenumberIS010683:2014(E)©ISO2014IS010683:2014(E)N/；\COPYRIGHTPROTECTEDDOCUMENTCiso201-1Alllipinsreserved.Unlessotiieiwisespecified,nupartofthispublicationmaybereproducedorutilizeduUierwiseinanyformorbyanymeans,electrunicorinechanfailIncludingphotocopying^orpostingontheinternetoran(niranec,withouipriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISOsmemherbodyinthecountryoftherequesterISOcopyrightofficeCasepoktalcSb*CH-1211Geneva20Tel.441227490L11Fax+41227490947E-nviilcopyrighi^i^WebPublishedinSwitzerlandii&ISO2014-Allrightsreserved

iiContentsISO10683:2014(E)Contents1 ••- ■•••>.-•••• ••••• Introduction ivyj1Scope12Normativereferences 13Termsanddefinitions24Genera)characteristicsofthecoating 24.1Zincflakecoatingsystems 24.2Conioosidonofthesystems 24.3Mechanicalandphysicalpropertiesandcuring 24.4Avoidanceofinternalhydrogenenibrittlement34.5Coalingsystemsandcoalingprocesses35Corrosionprotectionandtesting35.1General35.2Neutralsaltsnravtest35.3Sulfurdioxidetest[Kesternichtest).45.4Bulkhandling,automaticprocessessuchasfeedingand/orsorting,storage46Dimensionalrequirementsandtesting446.2Bolts,screws,studsandnutswithISOmetricthreads..56.3Otherfasteners6Page7Mechanicalandphysicalpropertiesandtesting.. AppearanceCorrosionresistancerelatedtotemperature Testmethodslorthicknessorcoatingweightdetermination..esnes】。 - ,1•-SacrificialcathodicprotectionTorque/tensionivlationshipDeterminationofhexavalentchroiniuniApplicabilityoftests TOC\o"1-5"\h\z\o"CurrentDocument"Testsmandatoryforeachlot 8\o"CurrentDocument"Testsforin-proccsscontrol 8\o"CurrentDocument"Teststobeconductedwhenspecifiedby(hepurchaser 8es】gn11。n .\o"CurrentDocument"Designationofzincflakecoatingsystemslortheorder 9\o"CurrentDocument"Designationofzincflakecoatingsystemsforlabelling 9\o"CurrentDocument"10Orderingrequirements 10AnnexA(informative)Designaspectsandassemblyofcoatedfasteners- 11AnnexB(informative)CoatingthicknessandthreadclearanceforISOmetricscrewthreads15\o"CurrentDocument"AnnexC(informative)Controlofthecorrosivityofthecabinetforneutralsaltspraytestforcoatedfasteners 22Bibliography30BibliographyISO10683:2014(E)ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsolakepariintheworkISOcollaboratescloseljrwiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.Theproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedinthe1SO/IECDirectives,Part1.InparticularthedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentsshouldbenoted.Thisdocumentwasdraftedinaccordancewiththeeditorialrulesofthe1SO/IECDirectives,Part2(see/directives).Attentionisdrawnlothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.DetailsofanypatentrightsidentifiedduringthedevelopmentofthedocumentwillbeintheIntroductionand/orontheISOlistofpatentdeclarationsreceived(seewww.iso.arg/patenls).Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.ForanexplanationonthemeaningofISOspecifictermsandexpressionsrelatedLoconformityassessment,aswellasinformationaboutlSO*sadherencetotheWTOprinciplesintheTechnicalBarrierstoTrade(TBT)seethefollowingURL:Foreword・SupplementaryinformationThecommitteeresponsibleforthisdocumentis(SO/TC2,Fasteners,SC14zSurfacecoatings.Thissecondeditioncancelsandreplacesthefirstedition(ISO10683:2000).Themaintechnicalchangesarethefollowing:widerapplicationtoalltypesoffastenersandallpartiesinvolved,seeIntroduction,Clause1.U4.3.Qause7andAnnexA;fulldescriptionofzincflakecoatingsystems,sec4X£2andA」.2;definitionsrelatedtocoatingsforfastenersmovedtothenewstandardISO1891-2;detailedspecificationinrelationwithhexavalentchromium;detailedspecificationconcerningpre-t!ealinentinrelationwithinternalhydrogenembrittlenienl,seeU；;precedenceofcorrosionresistanceoverthickness,secIL2andSJ;extendedrangeofpropertiesforcoatingsandrelatedtestmethods(includingKesternichtest,thicknessandweightdelenninalion,torque/tensionrelationship,determinationofhexavalentchromium),see2J.TLZ8andA.2;considerationrelatedtobulkhandling,automaticprocesses,storageandtransport,seeandA.4:alternativesforgaugeabilityandassemblability/niountability,see622;revisedarrangementofteststobecarriedoutforeachlot,forin-processcontrolorwhenspecified,seeClause8;reviseddesignationforcoalingsystemsandadditionoflabelling,seeCbure9:considerationrelatedtodesignaspectsandassemblyofcoatedfasteners,seenewAnnexA;ISO10683:2014(E)—detailedspecificationforcoatingthicknessandthreadclearanceforISOmetricthreads,movedtonewAnnuxH:—precisecontrolofcorrosivityforthesaltspraycabinetforcoatedfasteners,secnewAnnexC.ISO10683:2014(E)IntroductionTherevisionofISO10683:2000wasmadeinordertodefinetherelevantrequirementsonzincflakecoaledfasteners(coalingsystemswithandwithouthexavalentchromium]lorallpartiesinvolvedinthefastenerfield,i.e.chemicalsuppliers,coaters,fastenermanufacturers,distributorsandendusers.Itcoversailtypesoffasteners,i.e.fastenerswithISOmetricthread,fastenerswithnon-ISOmetricthread(includingthreadforming,ASMEinch60°screwthread,etc.)andnon-lhreadedfasteners(includingwashers,pins,dips,etc.).Italsoprovidesbasicadviceforthedesignanduseofcoatedfastenersinassembly.ISO10683:2014(E)INTERNATIONALSTANDARDISO10683:2014(E)Fasteners—Non-electrolyticallyappliedzincflakecoatingsScopeThisInternationalStandardspecifiesrequirementsfornon-eleclrolylicallyappliedzincflakecoatingsforsteelfasteners.Itappliestocoatings：withorwithouthexavalentchromium;withorwithouttopcoat;withorwithoutlubricant(integrallubricanland/ursubsequentlyaddedlubricant).Nationalregulationsfortherestrictionorprohibitionofcertainchemicalelementsshouldbetakenintoaccountinthecountriesorregionsconcerned.Itappliestobolts,screws,studsandnutswithISOmetricthread,tofastenerswithnon-1SOmetricthread,andtonon-threadcdfastenerssuchaswashers,pins,clips,etc.NOTECoatingsinaccoidaneewiththis[ntetnationalStandardareespeciallyusedforhighstrengthfastenersQI000MPa)toavoidriskofinternalhydrogenembrittlement(seei4).InformationfordesignandassemblyofcoatedfastenersisgiveninAnneKA.ThisInternationalStandarddoesnotspecifyrequirementsforsuchfastenerpropertiesasweldabilityorpaintability.Itdocsnotapplytomechanicallyappliedzinccoatings.NormativereferencesThefollowingdocuments,inwholeorinpart,arenormativelyreferencedinthisdocumentandareindispensableforitsapplication.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISO1463,Metallicandoxidecoatings—Measurementofcoatingthickness—MicroscopicalmethodISO1502,ISOgeneral-purposemeLricscrewthreads—GuutfesandcjauyifmISO1891-2,Fasteners—Terminology—Part2:Vocabulary^anddefinitionsforcoatings^ISO3269,Fasteners—AcceptanceinspectionISO3613:2010,Metallicandotherinorganiccoatings-Chromateconversioncoatingsonzinc,cadmium,aluminium-zincalloysandzinc-aluminiumalloys—TestmethodsISO6988,Metallicandothernonorganiccoalings—SulfurdioxideLestwilhgeneralcondensationofmoistureISO8991,DesignationsystemforfastenersISO9227:2012.Corrosiontestsinartificialatmospheres—SaltspraytestsISO16047,Fasteners—Torque/clampforcetesting1)Tobepublished.©ISO2014-Allrightsreserved

TermsanddefinitionsForthepurposesofthisdocument,thetermsanddefinitionsgiveninISO1891-2apply.GeneralcharacteristicsofthecoatingZincflakecoatingsystemsZincflakecoatingsystemsareproducedbyapplyingazincflakedispersiontothesurfaceofasteelfastener,usuallywiththeadditionofaluminiumflakes,inasuitablemedium.Undertheinfluenceofheat(curing),abondingamongstflakesandalsobetweenflakesandsubstrateisgenerated,thusforminganinorganicsurfacecoatingsufficientlyelectricallyconductingtoensurecathodicprotection.Thecoatingmayormaynotcontainhexavalentchromium,Cr(VI).Specialtechniquesmaybenecessarytoavoidexcessiveorinsufficientcoatingthickness.Specialtechniquesmaybenecessarytopreventlightweightand/orflatfastenersfromstickingtogether(e.g.washers,clips,fastenerswithcaptivewasher,flangednuts).Anadditionaltopcoatcanbeappliedtoincreasecorrosionresistanceand/ortoachievespecifieproperties(e.g.torque/tensionproperties,chemicalresistance,aspectcolour,electricalinsulation/conductivity-seeAx2).CompositionofthesystemsTherearefourbasiczincflakecoatingsystemsasshowninFigure1.TherearefourbasiczincflakecoatingsyslemsasshowninFigure1.1Basecoat2

Lubricant

1Basecoat2

Lubricant

Basecoat3TopcoaT

Basecoat4LubricantTopcoaf"BasecoatBasismetalBasismetalBasismetalBasismetalBasismetalBasismetalBasismetalBasismetalKey!onlybasecoatbasecoat+lubricantbasecoat♦topcoatbasecoat♦topcoat+lubricantFigure1—BasiczincflakecoatingsystemsBasecoatandtopcoatcanbewithintegrallubricant,seedetailedpossiblecombinationsin412MechanicalandphysicalpropertiesandcuringThecoatingprocessshallnotadverselyinfluencethemechanicalandphysicalpropertiesofthefasteners.NOTEDistributorswhocoatnun-coatedfastenersareconsideredasalterationcoatingdistributorsinaccordancewithISO16426.Dependingonthezincflakecoatingsystem,thecuringtemperaturescanbeupto320℃.ThecuringteniperatureshallnotbeaboveLhetemperingtemperatureofquenchedandtemperedfasteners.WARNING—Thecuringprocess(especiallywithhighertemperatureand/orlongerduration)mayaffectthefatiguelimitoffastenerswiththreadrolledafterheattreatment.SeealsoA.L3forotherpossibleeffectsofcuring.AvoidanceofinternalhydrogenembrittlementAcharacteristicofzincflakecoatingsystemsisthathydrogenisnotgeneratedduringthedepositionprocess.Pre-treatmentprocessesU5ingaIkaline/solventcleanerfollowedbymechanicalcleaningdonotgeneratehydrogen,thuseliminatingallriskofinternalhydrogenembrittlement(IHE).Whenmechanicalcleaningisnotsuitableforfunctionalreasons(c.g.forfastenerswithcaptivewashers,fastenerswithinternalthreads,fastenerstoberackcoated),chemicalcleaning[pickling)maybeapplied,providedthatacidwithsuitableinhibitorandininimuincleaningcycletimeareusedtoniininiizetheriskofinternalhydrogenenibrittlenienl.Fastenerswithhardnessgreaterthan385HVorproperlyclass12.9andaboveshallnotbesubjectedtoacidcleaning.Thedurationbetweencleaningandcoatingshallbeasshortaspossible.AphosphatingprocessispermiLledasanalternativelomechanicalcleaning(hydrogenmaybegeneratedduringthispre-treatmentprocess,howeverthecuringprocessallowsoutwarddiffusion).Thedurationbetweenphosphatingandcoatingshallbeasshoreaspossible.Cathodiccleaningprocessesarenotpermitted.NOTE7incflakecoatingshaveahighpenneabiliryforhydrogenwhich,duringthecuringprocess,allowsoutwarddiffusionofhydrogenwhichmayhavebeenabsorbedduringthepre-treatmentprocessasspecifiedinthis5iibclause.CoatingsystemsandcoatingprocessesThetypeandgeometryofthefastenersshallbeconsideredwhenselectingacoatingsystemandtherelatedcoatingprocess,seeA2.CorrosionprotectionandtestingGeneralCorrosionresistanceinacceleratedcorrosiontestscannotbedirectlyrelatedlocorrosionprotectionbehaviourinparticularserviceenvironments.However;acceleratedtestsareusedtoevaluatethecorrosionresistanceofthecoating.NeutralsaltspraytestTheneutralsaltspraytest(NSS)inaccordancewithISO9227:2012,5.2,isusedtoevaluatethecorrosionresistanceofthecoatingsystems.Forcoatedfasteners,thesaltspraycabinetshallbecontrolledinaccordancewithAnnexC.Theneutralsaltspraytestshallbecarriedoutonfastenersalone,notsoonerthan24haftercoatinginthe"as-coated/condition,i.e.beforesorting,packagingand/orassembling.AftertheneutralsaltspraytestusingtestdurationofTable1thereshallbenovisiblebasismetalcorrosion(redrust).IS010683:2014(E)Table1-StandardcategoriesforneutralsaltspraytestNeutralsaltfpraytest<luration(withoutredrust)Referencethicknessofthecoatingsystem3240h4pm480h5pm600h6um720h8pm960h10um4Thereferencethicknessincludesbasecoat(s)andtopcoat(s)Ifany,withorwithoutCi(VI).Thrcorrosionresistance\hdllbeduc:i:sivcf(irHccrptaiicr,thrrrfrrrnirlh:cknessisgivenforguidanceonly.Thecompositionofthesystem(l»srcoatonly. coat-Leipcoat,etc.)shallbespccilirtlatthetimeottheorder.NOTEGuidancefortheselectionofcoatingthicknessinrelationtocorrosionprotectionisgiveninAnnex8.Sulfurdioxidetest(Kesternichtest)Thistestisonlyintendedforoutdoorbuildingfasteners.ThesulfurdioxidetestwithgeneralcondensationofmoistureinaccordancewithISO6988isusedtoevaluatethecorrosionresistanceofthecoatingsystems：foroutdoorbuildingfasteners,thetestshallbecarriedoutwithtwolitresofSO?.Thesulfurdioxidetestshallbecarriedoulonfastenersalone,nosoonerihan24haftercoalingintheuas-coated"condition,i.e,beforesorting,packagingand/orassembling.Theminimumnumberofcyclesshallbeagreedbetweenthesupplierandthepurchaseratthetimeoftheorder,i.e.2cycles,3,5,8,10r12,15cycles,etc.Bulkhandling,automaticprocessessuchasfeedingand/orsorting,storageandtransportBulkhandling,automaticprocessessuchasfeedingand/orsorting,storageandtransportcancauseasignificantreductionofcorrosionprotectiondependingonthecoatingsystemandtypeandgeometryofthefasteners.ThismayespeciallyoccurforCr(VI)-freccoatingsystemswherelessself-healingeffecttakesplaceand/orwherelopcoatsaresensitiveluimpactdamageand/orabrasion.Whennecessary,anagreementshouldbereachedbetweenthesupplierandthepurchaser,c.g.byreducingtheminimutndurationtoneutralsaltspraytesLand/orbyincreasingthethicknessofthecoatingsystem.DimensionalrequirementsandtestingGeneralBeforecoating,fastenersshallbewithinthespecifieddimensions.ForISOmetricthreadsspecialrequirementsmayapply,see6,22hAand©ISO2014AllrightsreservedISO106«3:2014(E)Bolts；screws,studsandnutswithISOmetricthreadsCoatingthicknessWhenconsideringthecoatingthicknessrelatedtothedesiredcorrosionresistance,thedispersionofthethicknessofthecoatingsystemshallbetakenintoaccount,seeCoatingthicknesshasasignificantinfluenceongaugeability,thereforethreadtoleranceandclearanceinthethreadshallbetakenintoaccount.Thecoatingshallnolcausethezeroline(basicsize)lubeexceededinthecaseofexternalthreads;norshallitfallbelowinthecaseofinternalthreads,seeIL4.NOTEForstandardbolts,screws,studsandnutsnotspecificallymanufacturedtoaccommodatezincflakecoatings,seeIMandB.5,GaugcabilityandasscmblabilityCoatedISOmetricscrewthreadsshallbegaugedinaccordancewithISO1502withaGO-gaugcoftolerancepositionhforexternalthreadsandHforinternalthreads.Whengaugingacoatedexternalthread,amaximumtorqueof0,001d2(Nm)isacceptable,wheredisthenominalthreaddiameterinmillimetres,seeTable2.Table2-MaximumtorqueforgaugingofcoatedISOmetricscrewthreads

Nominalthreaddiameter,dmmMaximumtorqueforgauging^Nm40,0650,1360,2280,5110121,7142,7164,11R5a208,02211241427203027333636473959Forotherdiameters,thetorqueshallbecalculatedinaccordancewith0,001d?(Nm)androundedto2digits.Otheracceptanceproceduresmaybeappliedbyagreementbetweensupplierandpurchaser:—forexternalthread,useofasuitablenutortheoriginalmatingfastener;-forinternalthread,useofasuitablemandrelortheoriginalmatingfastener.6.3OtherfastenersThereisnostandarddimensionalrequirementfornon-ISOmetricthreadedcoatedfastenersandnonthreadedcoatedfasteners.Foradditionalinformation,seeA3.7MechanicalandphysicalpropertiesandtestingAppearanceThecolourofzincflakecoatingisoriginallysilver-grey.Othercolourscanbeobtainedbyusingatopcoat.Variationincolourshallnotbecauseofrejectionunlessotherwiseagreed,seeClause10h).Thecoatedfastenershallbefreefromblistersanduncoatcdareaswhichmayadverselyaffectthecorrosionprotection.Localexcessofcoatingshallnotimpairfunctionalproperties(seeClause6andA2].CorrosionresistancerelatedtotemperatureElevatedtemperaturecanaffectthecorrosionprotectionofthecoatedfasteners.Thistestisspecifiedforin-processcontrol,itisnotintendedtocheckthebehaviourofthecoatedfastenerstogetherwiththeassembledparts.Afterheatingthecoatedfastenersfor3hat150℃(fastenertemperature)thecorrosionresistancerequirementsasspecifiedinClause5shallstillbemet.Otherspecificationsmaybeagreedatthetimeoftheorder.TestmethodsforthicknessorcoatingweightdeterminationCoatingthicknessorcoatingweightshallbedeterminedusingoneofthefollowinglestmethods:magneticinductivetechniques(determinationofthetotallocalthickness,onmeasuringareas];X-raytechniques(thismethodisonlycapabletodeterminethelocalthicknessofthebasecoat,onmeasuringareas);chemicalormechanicalremovalufthecoatingsyslein(delenninationoftheaveragetotalcoatingweightofthefastener);microscopicmethodinaccordancewithISO1463(determinationofthetotallocalthickness,onanyarea(s)ofthefastener).Incaseofdispute,themicroscopicmethodinaccordancewithISO1463shallbeused.ThethicknessshallbemeasuredonthereferenceareasspecifiedinFigure2.unlessotherwiseagreed.Referenceareasforthreadedfasteners©JSO2014-AllrightsreservedExampleofreferenceareasfornun-threadedfastenersKey1referenceareaforlocalcoatingthicknessdetenninationFigure2-ReferenceareasfurfastenersDuctilityZincflakecoatingsystemsarcgenerallynocveryductile,i.e.corrosionperformancemaybeaffectedwhendeformationoccursaftercoating.Ductilityshallbecompatiblewiththeelasticdeformationoccurringduringassemblyofthefastener,c.g,tighteningofthreadedfasteners,flatteningforconicalwashers,bendingforclipsduringinstallation.Theability^ofthezincflakecoalingsystemtodeformshouldnotcauseimpairnienLoftheperformanceofthefastener,e.g.corrosionresistance,torque/tensionrelationshipwhenspecified.Therefore,suitabletestsforparticularapplicationsshallbebyagreementbetweenthepurchaserandthesupplier.NOTELackofductilitycangeneratecracks/chipsofthecoatingthusimpairingcorrosionresistance.Adhesion/cohesionThistestmaybecarriedoutateachstepoftheapplicationprocess.Whenanadhesivetapewith25mmwidthwithanadhesivestrengthof(7±1)Nisfirmlypressedbyhandontothesurfaceandissubsequentlypulledoffrapidlyandperpendicularlytothesurface,thecoatingshallnotbepeeledoffthebasisnieta!.Smallamountsofthecoatingmaterialleftstickingtothetapeareacceptable.NOTE Coatingmaterialvisibleonbothsurfacesofthefastenerandadhesivetapeusuallyresultsfromlackofcohesion.Visiblebasismetalandcoatingmaterialontheadhesivetapeusuallyresultfromlackofadhesion.SacrificialcathodicprotectionThesacrificialcathodicprotectionabilityofthecoatingmaybetestedasfollows:Thefastenershallbescratcheddowntothebasismetal,usingatoolwithanominalwidthof0,5mnrAfteraneutralsaltspraytestof72hdurationinaccordancewithClause5,thereshallbenoredrustinthescratchedarea.Torque/tensionrelationshipWhenspecified,torque/tensionrelationshipmaybedeterminedforboltsandnutswithzincflakecoatingsystemsincludingintegrallubricantand/orsubsequentlyaddedlubricant.©ISO2014-Allr.ghtsreservedISO106832014(E)Thetestmethodshallbeagreedbetweenthesupplierandthepurchaser,inaccordancewithISO16047orotherrelevanttechnicalspecifications.Therequirementsfortorque/tensionrelationshipshallbeagreedbetweenthesupplierandthepurchaser.SeeA^.forinformation.Storageconditionsshallnotimpairthetorque/tensionperformanceofthecoatedfasteners(seeDeterminationofhexavalentchromiumThepresenceorabsenceofCr(Vl]maybedetermined.Inthiscase,thedeterminationshallbedoneinaccordancewithISO3613:2010,5.5.ApplicabilityoftestsGeneralAllrequirementsspecifiedinCbuq亡，5.6and2applyasfarastheyaregeneralcharacteristicsofthecoatingorareseparatelyspecifiedbythepurchaser.TestsmandatoryforeachlotThefollowingtestsshallbecarriedoutforeachlotoffasteners(seeISO3269].-Gaugingofthread(sec6>22).—Appearance(seeZl).Testsforin-processcontrolThefollowingtestsarenotintendedtobeappliedforeachfastenerotbutshallbeusedforin-processcontrol(seeISO1642612]),whenrelevant.Corrosionresistance：Neutralsaltspraytest(see£2〕oralternativelyandonlywhenspecificallyrequired,sulfurdioxidetest(see5^3).Thecontactpointsofthefastenerwithaholdingfixtureshallnotbeconsideredintheevaluationofcorrosionprotection.Temperatureresistance(seeZ2).Coatingthicknessorcoatingweight(see7,31.Adhesion/cohesion(seeZ5).TeststobeconductedwhenspecifiedbythepurchaserThefollowingtestsareconductedwhenspecificallyrequiredbythepurchaser,seeISO3269.In-processtestresultsforthatlot(see8.3)maybeusedtosupplytestresultstothepurchaser.Corrosionresistance:Neutralsaltspraytest(see5x2]oralternativelyandonlywhenspecificallyrequired,sulfurdioxidetest[sec5.3).Thecontactpointsofthefastenerwithaholdingfixtureshallnotbeconsideredintheevaluationofcorrosionprotectionperformance.Significantareasmaybespecifiedfortheevaluationofthecorrosionresistance.Coatingthicknessorcoatingweight(see7.3).lorquc/tcnsionrelationship(seeZZandlabkJ).Ductility(see7.41.Cathodicprotection(seeZfi).CISO2014-Allrightsreserved—PresenceorabsenceofCr(VI)(see7.81.DesignationDesignationofzincflakecoatingsystemsfortheorderThedesignationofthecoatingshallbeaddedtothefastenerdesignationinaccordancewiththedesignationsystemspecifiedinISO8991.Thezincflakecoatingsystemshallbedesignatedinaccordancewith1able3andinthesameorder.Aslash(/]shallbeusedtoseparatedatafieldsinthecoatingdesignation;acrossMindicatesthatanitemhasbeenvoluntarilyomitted.Table3-DesignationforzincflakecoatingsystemsfortheorderZincflakecoatingsystemNeutralsaltspraytestduration(redrust)Torque/tensionrequirement,ifanyBasecoatHexavalentchromiumCr(UI)OrganicorinorganictopcoatAdditionallubricant,ifanywithoutintegrallubricant=flZnorwithintegralhibricanr=fIZnLNospecification:maybedeliveredwithorwithoutCr(VI)atthechoiceofthesupplierorWithCr(VI).ycorWithoutGr(Vl)-ncWithintegrallubricantinthetopcoat=TLorWithoutintegralhihiic^nrintheropcoat=TnLe.g.480h□a Rangeof〃orKvaluestobespecifiedatthecimcoftheorder,seeaIsoA21.Examplesofcoatingdesignationfortheorder:EXAMPLE1Pastrnrrwithanon-rlr(trolyticallyappliedzincflakecoating(flZn),witharrquiirdniinimuincorrosionresistance(neutralsaltspraytest)of240hisdesignatedasfollows：(fastenerdesignation]-fIZn/x/x/x/240h/xEXAMPLE2Fastenerwithanon-electrolyticallyappliedzincflakecoatingwithintegrallubricant(fl2nL),withoutCr(VI)(nc),withouttopcoat,witharequiredminimumcorrosionresistance(neutralsaltspraytest)of480h,lubricatedhutwithoutspecifictorque/tensionrequirementisdesignatedasfbllnww:[fastenerdesignation]-flZnL/nc/x/x/480h/xEXAMPLE3Fastenerwithwnon-electrolytkallyappliedzincflakecoating(flZn)withCr(VI)(yc),withatopcoatwithintegrallubricant(TL),witharequiredminimumcorrosionresistance(neutralsaltspraytest)of720h,anddeliveredwithacoefficientoffriction〃witliintherangeof[0,10-0,20](C)isdesignatedasfollows:[fastenerdesignation]-flZn/yc/TL/x/720h/CEXAMPLE4Fastenerwithanon-electrolyticallyappliedzincflakecoating(f)Zn)withoutCr(VIJ(nc),withoutintegrallubricant,withatopcoatwithoutintegrallubricant(Tn),withadditionallubricant(L),witharequiredminimumcorrosionresistance(neutralsaltspraytest)of960h,anddeliveredwithaspecifiedcoefficientoffriction//equalto0,17t0,03(C)isdesignatedasfollows:(fastenerdesignation!-flZn/nc/Tn/L/960h/CDesignationofzincflakecoatingsystemsforlabellingAtleastthefollowinginformationshal