Designation:B739−03(Reapproved2013)StandardSpecificationforNickel-Iron-Chromium-SiliconAlloyWeldedTube1ThisstandardisissuedunderthefixeddesignationB739;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisspecificationcoversalloysUNSN08330andUNSN08332intheformofweldedtubeintendedforheatresistingapplicationsandgeneralcorrosiveservice.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B536SpecificationforNickel-Iron-Chromium-SiliconAl-loys(UNSN08330andN08332)Plate,Sheet,andStripB751SpecificationforGeneralRequirementsforNickelandNickelAlloyWeldedTube3.GeneralRequirement3.1Materialfurnishedunderthisspecificationshallcon-formtotheapplicablerequirementsofSpecificationB751unlessotherwiseprovidedherein.4.OrderingInformation4.1Itistheresponsibilityofthepurchasertospecifyallrequirementsthatarenecessaryformaterialorderedunderthisspecification.Examplesofsuchrequirementsinclude,butarenotlimitedto,thefollowing:4.1.1Alloy(Table1),4.1.2ASTMdesignationandyearofissue,4.1.3Dimensions(outsideorinsidediameterandnominalwallthickness),4.1.4Length(specificorrandom),4.1.5Quantity(feetornumberofpieces),4.1.6Certification—Stateifcertificationisrequired,4.1.7SamplesforProduct(Check)Analysis—Statewhethersamplesforproduct(c...
