Designation:B690−02(Reapproved2013)StandardSpecificationforIron-Nickel-Chromium-MolybdenumAlloys(UNSN08366andUNSN08367)SeamlessPipeandTube1ThisstandardisissuedunderthefixeddesignationB690;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversiron-nickel-chromium-molybdenumalloys(UNSN08366andUNSN08367)*cold-finishedannealedorhot-finishedannealedseamlesspipeandtubeintendedforuseinspecialcorrosiveserviceandforheat-resistingapplications.1.2Pipeandtubeshallbesuppliedinthesolutionheattreatedanddescaledcondition.Whenbrightannealingisused,descalingisnotnecessary.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodportion,Section12,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimi-tationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A450/A450MSpecificationforGeneralRequirementsforCarbonandLowAlloySteelTubesB880SpecificationforGeneralRequirementsforChemicalCheckAnalysisLimitsforNickel,NickelAlloysandCobaltAlloysE8TestMethodsforTensionTestingofMetallicMaterialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE1473TestMethodsforChemicalAnalysisofNickel,Cobalt,andHigh-TemperatureAlloys3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1averagediameter,n—averageofthemax...
