Designation:B840−15StandardSpecificationforElectrodepositedCoatingsofZincCobaltAlloyDeposits1ThisstandardisissuedunderthefixeddesignationB840;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverstherequirementsforelectrode-positedzinccobaltalloycoatingsonmetals.1.2Thefollowingprecautionarycaveatpertainstothetestmethodportiononly,Section8,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B117PracticeforOperatingSaltSpray(Fog)ApparatusB183PracticeforPreparationofLow-CarbonSteelforElectroplatingB242GuideforPreparationofHigh-CarbonSteelforElec-troplatingB320PracticeforPreparationofIronCastingsforElectro-platingB322GuideforCleaningMetalsPriortoElectroplatingB374TerminologyRelatingtoElectroplatingB487TestMethodforMeasurementofMetalandOxideCoatingThicknessbyMicroscopicalExaminationofCrossSectionB499TestMethodforMeasurementofCoatingThicknessesbytheMagneticMethod:NonmagneticCoatingsonMagneticBasisMetalsB504TestMethodforMeasurementofThicknessofMetal-licCoatingsbytheCoulometricMethodB507PracticeforDesignofArticlestoBeElectroplatedonRacksB568TestMethodforMeasurementofCoatingThicknessbyX-RaySpectrometryB571PracticeforQualitativeAdhesionTestingofMetallicCoatingsB602TestMethodforAttributeSamplingofMetallicandInorganicCoatingsB697GuideforSelectionofSamplingPlansforInspectionofElectrodepositedMetallicandInorganicCoatingsB762TestMethodofVariablesSamplingofMetallicandInorganicCoatingsB849SpecificationforPre-TreatmentsofIronorSteelforReducingRiskofHydrogenEmbrittlementB850GuideforPost-CoatingTreatmentsofSte...
