Designation:B866−95(Reapproved2018)StandardTestMethodforGrossDefectsandMechanicalDamageinMetallicCoatingsbyPolysulfideImmersion1ThisstandardisissuedunderthefixeddesignationB866;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversequipmentandmethodsfordetectinggrossdefectsandmechanicaldamage(includingwear-through)inmetalliccoatingswherethebreaksinthecoatingpenetratedowntoacopperorcopperalloysubstrate.1.2Thistestmethodissuitableforcoatingsconsistingofsingleorcombinedlayersofanycoatingthatdoesnotsignificantlytarnishinanalkalinepolysulfidesolution.Ex-amplesaregold,nickel,tin,tin-lead,andpalladium,ortheiralloys.1.3Recentreviewsofporositytesting(whichincludethoseforgrossdefects)andtestingmethodscanbefoundinliterature.2,3AnASTMguidetotheselectionofporosityandgrossdefecttestsforelectrodepositsandrelatedmetalliccoatingsisavailableasGuideB765.OtherrelatedporosityteststandardsareTestMethodsB735,B741,B798,B799,andB809.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:4B246SpecificationforTinnedHard-DrawnandMedium-Hard-DrawnCopperWireforElectricalPurposesB374TerminologyRelatingtoElectroplatingB488SpecificationforElectrode...
