ASTM B

Designation:B464–99AnAmericanNationalStandardStandardSpecificationforWeldedUNSN08020,N08024,andN08026AlloyPipe1ThisstandardisissuedunderthefixeddesignationB464;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecification2coversweldedUNSN08020,N08024,andN08026alloypipeforgeneralcorrosion-resistingandlow-orhigh-temperatureservice.1.2ThepipecoveredisnominalpipesizesuptoandincludingNPS6,withthenominalwallthicknessesgivenasSchedules5S,10S,and40SandnominalpipesizesuptoandincludingNPS2,alsoincludingSchedule80S.Table2ofSpecificationB775isbasedonTableA1ofANSIB36.19andgivesthenominaldimensionsofthesesizes.Table3ofSpecificationB775liststhedimensionalrequirementsofthesesizes.Pipehavingotherdimensionsmaybefurnishedprovidedsuchpipecomplieswithallotherrequirementsofthisspecifi-cation.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.2.ReferencedDocuments2.1ASTMStandards:A262PracticesforDetectingSusceptibilitytoIntergranu-larAttackinAusteniticStainlessSteels3B775SpecificationforGeneralRequirementsforNickelandNickel-AlloyWeldedPipe4E8TestMethodsforTensionTestingofMetallicMaterials52.2ANSIStandard:B36.19StainlessSteelPipe63.GeneralRequirement3.1MaterialfurnishedinaccordancewiththisspecificationshallconformtotheapplicablerequirementsofthecurrenteditionofSpecificationB775unlessotherwiseprovidedherein.4.OrderingInformation4.1Itistheresponsibilityofthepurchasertospecifyallrequirementsthatarenecessaryforthesafeandsatisfactoryperformanceofmaterialorderedunderthisspecification.Examplesofsuchrequirementsinclude,butarenotlimitedto,thefollowing:4.1.1Quantity(feetornumberoflengths),4.1.2UNSnumber,4.1.3Size(nominalpipesizeandschedule),4.1.4Length(randomorspecific),4.1.5ASTMdesignation,4.1.6ProductAnalysis—Stateifrequired,4.1.7Certification—Stateifacertificationorareportoftestresultsisrequired,4.1.8PurchaserInspection—Statewhichtestsorinspec-tionsaretobewitnessed,ifany,and4.1.9Supplementaryrequirements,ifany.5.MaterialsandManufacture5.1Thepipeshallbemadefromflat-rolledstockbyanautomaticweldingprocesswithnoadditionoffillermetal.1ThisspecificationisunderthejurisdictionofASTMCommitteeB-2onNonferrousMetalsandAlloysandisthedirectresponsibilityofSubcommitteeB02.07onRefinedNickelandCobaltandTheirAlloys.CurrenteditionapprovedMay10,1999.PublishedJune1999.OriginallypublishedasB464–67.LastpreviouseditionB464–93.2ForASMEBoilerandPressureVesselCodeapplications,seerelatedSpecifi-cationSB-464inSectionIIofthatcode.3AnnualBookofASTMStandards,Vol01.03.4AnnualBookofASTMStandards,Vol02.04.5AnnualBookofASTMStandards,Vol03.01.6AvailablefromAmericanNationalStandardsInstitute,11W.42ndSt.,13thFloor,NewYork,NY10036.TABLE1ChemicalRequirementsElementComposition,%UNSN08020UNSN08024UNSN08026Carbon,max0.070.030.03Manganese,max2.001.001.00Phosphorus,max0.0450.0350.03Sulfur,max0.0350.0350.03Silicon,max1.000.500.50Nickel32.00–38.0035.00–40.0033.00–37.20Chromium19.00–21.0022.50–25.0022.00–26.00Molybdenum2.00–3.003.50–5.005.00–6.70Copper3.00–4.000.50–1.502.00–4.00Columbium(Nb)+83carbon–1.000.15–0.35tantalumNitrogen......0.10–0.16IronAremainderremainderremainderABydifference.TABLE2MechanicalPropertyRequirementsTensileStrength,min,ksi(MPa)YieldStrength,Amin,ksi(MPa)Elongationin2in.(50.8mm),min,%80(551)35(241)30.0AYieldstrengthshallbedeterminedbytheoffsetmethodat0.2%limitingpermanentsetinaccordancewithTestMethodsE8.Analternativemethodofdeterminingyieldstrengthmaybebasedontotalextensionunderloadof0.5%.1AMERICANSOCIETYFORTESTINGANDMATERIALS100BarrHarborDr.,WestConshohocken,PA19428ReprintedfromtheAnnualBookofASTMStandards.CopyrightASTMCOPYRIGHTAmericanSocietyforTestingandMaterialsLicensedbyInformationHandlingServicesCOPYRIGHTAmericanSocietyforTestingandMaterialsLicensedbyInformationHandlingServices5.2HeatTreatment—PipeofUNSN08020alloyshallbefurnishedinthestabilized-annealedcondition.PipeofUNSN08024alloyshallbefurnishedintheannealedcondition.PipeofUNSN08026alloyshallbefurnishedinthesolution-annealedcondition.NOTE1—Therecommendedannealingtemperaturesare1800to1850°F(982to1010°C)forUNSN08020,1925to1975°F(1052to1079°C)forUNSN08024,and2050to2200°F(1121to1204°C)forUNSN08026.6.ChemicalComposition6.1ThematerialshallconformtothecompositionlimitsspecifiedinTable1.OnetestisrequiredforeachlotasdefinedinSpecificationB775.6.2Ifaproductanalysisisperformed,itshallmeetthechemistrylimitsprescribedinTable1,subjecttotheanalysistolerancesspecifiedinTable1ofSpecificationB775.7.MechanicalPropertiesandOtherRequirements7.1MechanicalProperties—ThematerialshallconformtothemechanicalpropertyrequirementsspecifiedinTable2.OnetestisrequiredforeachlotasdefinedinSpecificationB775.7.2FlatteningTest—Aflatteningtestshallbemadeoneachendofonepipeperlot.Superficialrupturesresultingfromsurfaceimperfectionsshallnotbecauseforrejection.7.3NondestructiveTestRequirements—Eachpipeshallbesubjectedtoeitherapressuretestoranondestructiveelectrictestatthemanufacturer’soption.Thepurchasermayspecifywhichtestistobeused.8.Lengths8.1Lengthsmaybeorderedaseitherrandomlengths(normally15to24ft(4.6to7.3m)withsomeagreeduponallowanceforshorts)orspecificcutlengths.SUPPLEMENTARYREQUIREMENTSThefollowingsupplementaryrequirementsshallbeappliedonlywhenspecifiedbythepurchaserintheinquiry,contract,ororder:S1.CorrosionTestsS1.1Oneintergranularcorrosiontestperlotshallbeper-formedbythemanufactureronasensitizedspecimenandtestedinaccordancewithPracticesA262.Whenthissupple-mentaryrequirementisspecified,thespecificpractice(PracticeBorPracticeE)shallalsobespecified.IfPracticeBisspecified,thespecimenmustpasswitharateoflessthan0.002in.(0.05mm)permonth.Alotforintergranularcorrosiontestingshallbethesameasformechanicaltesting.S1.1.1InadditiontotheannealrecommendedinNote1,thespecimenshallbesensitizedfor1hat1250°F(677°C)beforebeingsubjectedtocorrosiontesting.S1.1.2Ifanycorrosiontestspecimenfailsthetest,thematerialrepresentedbysuchspecimensmaybereheat-treatedandresubmittedfortest.TheAmericanSocietyforTestingandMaterialstakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstandard.Usersofthisstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,areentirelytheirownresponsibility.Thisstandardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteeandmustbereviewedeveryfiveyearsandifnotrevised,eitherreapprovedorwithdrawn.YourcommentsareinvitedeitherforrevisionofthisstandardorforadditionalstandardsandshouldbeaddressedtoASTMHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommittee,whichyoumayattend.IfyoufeelthatyourcommentshavenotreceivedafairhearingyoushouldmakeyourviewsknowntotheASTMCommitteeonStandards,100BarrHarborDrive,WestConshohocken,PA19428.B4642COPYRIGHTAmericanSocietyforTestingandMaterialsLicensedbyInformationHandlingServicesCOPYRIGHTAmericanSocietyforTestingandMaterialsLicensedbyInformationHandlingServices