Designation:B662−94(Reapproved2012)StandardSpecificationforSilver-MolybdenumElectricalContactMaterial1ThisstandardisissuedunderthefixeddesignationB662;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverselectricalcontactcomponentsmadefromsilver-molybdenumbypowdermetallurgicalpro-cedures.1.2Thisspecificationcoverscompositionswithinthesilver-molybdenumsystemnormallyspecifiedbyusersofcontacts.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B328TestMethodforDensity,OilContent,andIntercon-nectedPorosityofSinteredMetalStructuralPartsandOil-ImpregnatedBearings(Withdrawn2009)33.OrderingInformation3.1Ordersforthismaterialunderthisspecificationshallincludethefollowinginformation:3.1.1Dimensions(seeSection10),3.1.2Chemicalcomposition(seetablesintheappendixasaguideline),3.1.3Physicalproperties(seeSection5andtheappendixasaguideline),3.1.4Certification(seeSection13),and3.1.5Otherfeaturesasagreeduponbetweenthemanufac-turerandpurchaser.4.ChemicalComposition4.1Thematerialshallconformtocompositionlimitsasagreeduponbetweenthemanufacturerandthepurchaser.4.2ThechemicalanalysisshallbemadeinaccordancewiththemethodsprescribedinthenewesteditionofVolume01.02oftheAnnualBookofASTMStandardsorbyanyotherapprovedmethodagreeduponbetweenthemanufacturerandthepurchaser.5.Physical...
