Designation:B867−95(Reapproved2018)StandardSpecificationforElectrodepositedCoatingsofPalladium-NickelforEngineeringUse1ThisstandardisissuedunderthefixeddesignationB867;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Composition—Thisspecificationcoversrequirementsforelectrodepositedpalladium-nickelcoatingscontainingbe-tween70and95mass%ofpalladiummetal.Compositecoatingsconsistingofpalladium-nickelandathingoldover-plateforapplicationsinvolvingelectricalcontactsarealsocovered.1.2Properties—Palladiumisthelightestandleastnobleoftheplatinumgroupmetals.Palladium-nickelisasolidsolutionalloyofpalladiumandnickel.Electroplatedpalladium-nickelalloyshaveadensitybetween10and11.5,whichissubstan-tiallylessthanelectroplatedgold(17.0to19.3)andcompa-rabletoelectroplatedpurepalladium(10.5to11.8).Thisyieldsagreatervolumeorthicknessofcoatingperunitmassand,consequently,somesavingofmetalweight.Thehardnessrangeofelectrodepositedpalladium-nickelcomparesfavorablywithelectroplatednoblemetalsandtheiralloys(1,2).2NOTE1—Electroplateddepositsgenerallyhavealowerdensitythantheirwroughtmetalcounterparts.ApproximateHardness(HK25)Gold50–250Palladium75–600Platinum150–550Palladium-Nickel300–650Rhodium750–1100Ruthenium600–13001.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandReco...
