Designation:F364−96(Reapproved2014)StandardSpecificationforMolybdenumFlattenedWireforElectronTubes1ThisstandardisissuedunderthefixeddesignationF364;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverstwotypesofmolybdenumflattenedwireupto0.050in.(1.27mm)thickandupto0.375in.(9.52mm)wide,specificallyforuseinelectrontubes.ThetwogradeshaveUNSnumbersR03604andR03603.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thefollowingsafetyhazardscaveatpertainsonlytothetestmethoddescribedinthisspecification(see10.2).Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E18TestMethodsforRockwellHardnessofMetallicMa-terialsE315TestMethodsforChemicalAnalysisofMolybdenum(Withdrawn2010)3E384TestMethodforKnoopandVickersHardnessofMaterials3.Classification3.1Twotypesofmolybdenumflattenedwirearecoveredbythisspecification:3.1.1TypeI,UNSR03604—Thistypeshallhavethecom-positionlimitsprescribedinTable1.3.1.2TypeII,UNSR03603—Thistypeshallbeahigh-recrystallization-temperaturematerialhavingthecompositionlimitsprescribedinTable1andshallbecapableofretainingitsductilityafterfiringatatemperatureof2375625°F(1300614°C)foratleast20min.4.OrderingInformation4.1Ordersformaterialunderthisspecificationshallincludethefollowinginformation:4.1.1Quantityofeachsize,4.1.2Dimensionsorsize(see8.1),4.1.3Edgewisecurvature(camber)ifrequired(see8.2),4.1.4Type(see3.1),4.1.5Temper(see7.1),and4.1.6Howfurnished(coils,spools,etc.)...
