Designation:A450/A450M−15StandardSpecificationforGeneralRequirementsforCarbonandLowAlloySteelTubes1ThisstandardisissuedunderthefixeddesignationA450/A450M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecification2coversagroupofrequirementswhich,withtheexceptionsof6.3andSections7,8,19,20,21,22,23,24,and25,aremandatoryrequirementstothefollow-ingASTMtubularproductspecifications:3TitleofSpecificationASTMDesignationAElectric-Resistance-WeldedCarbonSteelandCarbonManganeseSteelBoilerTubesA178/A178MSeamlessCold-DrawnLow-CarbonSteelHeat-ExchangerandCondenserTubesA179/A179MSeamlessCarbonSteelBoilerTubesforHigh-PressureServiceA192/A192MSeamlessMedium-CarbonSteelBoilerandSuper-heaterTubesA210/A210MElectric-Resistance-WeldedCarbonSteelHeat-ExchangerandCondenserTubesA214/A214MSeamlessandElectric-WeldedLow-AlloySteelTubesA423/A423MSpecificationforSeamlessandWeldedCarbonSteelHeat-ExchangerTubeswithIntegralFinsA498SeamlessCold-DrawnCarbonSteelFeedwaterHeaterTubesA556/A556MSeamless,Cold-DrawnCarbonSteelTubingforHy-draulicSystemServiceA822/A822MAThesedesignationsrefertothelatestissueoftherespectivespecifications.1.2OneormoreofSections6.3,7,8,19,20,21,22,22.1,24,and25applywhentheproductspecificationorpurchaseorderhasarequirementforthetestoranalysisdescribedbythesesections.1.3Incaseofconflictbetweenarequirementoftheproductspecificationandarequirementofthisgeneralrequirementspecificationonlytherequirementoftheproductspecificationneedbesatisfied.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvalue...
