Designation:B834−15StandardSpecificationforPressureConsolidatedPowderMetallurgyIron-Nickel-Chromium-Molybdenum(UNSN08367),Nickel-Chromium-Molybdenum-Columbium(Nb)(UNSN06625),Nickel-Chromium-IronAlloys(UNSN06600andN06690),andNickel-Chromium-Iron-Columbium-Molybdenum(UNSN07718)AlloyPipeFlanges,Fittings,Valves,andParts1ThisstandardisissuedunderthefixeddesignationB834;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoverspressureconsolidatedpowdermetallurgyiron-nickel-chromium-molybdenum(UNSN08367)andnickel-chromium-molybdenumcolumbium(Nb)(UNSN06625),nickel-chromium-ironalloys(UNSN06600andN06690),andnickel-chromium-iron-columbium(Nb)-molybdenum(UNSN07718)alloypipeflanges,fittings,valves,andpartsintendedforgeneralcorrosionorheat-resistingservice.1.1.1UNSN06625productsarefurnishedintwogradesofdifferentheat-treatedconditions:1.1.1.1Grade1(annealed)—Materialisnormallyemployedinservicetemperaturesupto1100°F(593°C).1.1.1.2Grade2(solutionannealed)—Materialisnormallyemployedinservicetemperaturesabove1100°F(593°C)whenresistancetocreepandruptureisrequired.1.2UNSN08367productsarefurnishedinthesolutionannealedcondition.1.3UNSN06600productsarefurnishedintheannealedcondition.1.4UNSN06690productsarefurnishedintheannealedcondition.1.5UNSN07718productsarefurnishedinthesolutionannealed+precipitationhardenedcondition.1.6Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.7Thefollowingsafetyhazardscaveatpertainsonlytotestmethodsportions,Sections7.3and13,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtobecomefamiliarwit...
