Designation:A209/A209M−03(Reapproved2017)StandardSpecificationforSeamlessCarbon-MolybdenumAlloy-SteelBoilerandSuperheaterTubes1ThisstandardisissuedunderthefixeddesignationA209/A209M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecification2coversseveralgradesofminimum-wall-thickness,seamless,carbon-molybdenumalloy-steel,boilerandsuperheatertubes.1.2Thisspecificationcoverstubes1⁄2to5in.[12.7to127mm]inclusive,inoutsidediameterand0.035to0.500in.[0.9to12.7mm],inclusive,inminimumwallthickness.1.3Anoptionalsupplementaryrequirementisprovidedand,whendesired,shallbesostatedintheorder.1.4Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecifi-cation.Theinch-poundunitsshallapplyunlessthe“M”designationofthisspecificationisspecifiedintheorder.2.ReferencedDocuments2.1ASTMStandards:3A1016/A1016MSpecificationforGeneralRequirementsforFerriticAlloySteel,AusteniticAlloySteel,andStainlessSteelTubes3.GeneralRequirements3.1ProductfurnishedunderthisspecificationshallconformtotherequirementsofSpecificationA1016/A1016M,includ-inganysupplementaryrequirementsthatareindicatedinthepurchaseorder.Failuretocomplywiththegeneralrequire-mentsofSpecificationA1016/A1016Mconstitutesnonconfor-mancewiththisspecification.IncaseofconflictwiththerequirementsofthisspecificationandSpecificationA1016/A1016M,thisspecificationshallprevail.4.MaterialsandManufacture4.1SteelmakingPractice—Thesteelshallbekilled.4.2Thetubesshallbemadebytheseamlessprocessandshallbeeitherhot-finishedorcold-finished,asspecified.4.3HeatTreatment—Hot-finishedtubessha...
