Designation:B799−95(Reapproved2014)StandardTestMethodforPorosityinGoldandPalladiumCoatingsbySulfurousAcid/Sulfur-DioxideVapor1ThisstandardisissuedunderthefixeddesignationB799;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversequipmentandmethodsfordeterminingtheporosityofgoldandpalladiumcoatings,particularlyelectrodepositsandcladmetalsusedonelectricalcontacts.1.2Thistestmethodisdesignedtoshowwhethertheporositylevelislessorgreaterthansomevaluewhichbyexperienceisconsideredbytheusertobeacceptablefortheintendedapplication.1.3Avarietyofotherporositytestingmethodsaredescribedintheliterature.2,3OtherporositytestmethodsareB735,B741,B798,andB809.AnASTMGuidetotheselectionofporositytestsforelectrodepositsandrelatedmetalliccoatingsisavailableasGuideB765.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazards,seeSection6.2.ReferencedDocuments2.1ASTMStandards:4B374TerminologyRelatingtoElectroplatingB542TerminologyRelatingtoElectricalContactsandTheirUseB735TestMethodforPorosityinGoldCoatingsonMetalSubstratesbyNitricAcidVaporB741TestMethodforPorosityInGoldCoatingsOnMetalSubstratesByPaperElectrography(Withdrawn2005)5B765GuideforSelectionofPorosityandGrossDefectTestsforElectrodepositsandRelatedMetallicCoatingsB798TestMethodforPorosityinGoldorPalladiumCoat-ingsonMetalSubstratesbyGel-BulkElectrographyB8...
