SAE-J525-1999-Welded-and-Cold-Drawn-Low-Carbon-Ste

SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.QUESTIONSREGARDINGTHISDOCUMENT:[phone]FAX:[phone]TOPLACEADOCUMENTORDER:[phone]FAX:[phone]SAEWEBADDRESS(R)WeldedandColdDrawnLow-CarbonSteelTubingAnnealedforBendingandFlaring1.Scope—ThisSAEStandardcoversnormalizedelectric-resistancewelded,cold-drawn,single-wall,low-carbonsteelpressuretubingintendedforuseaspressurelinesandinotherapplicationsrequiringtubingofaqualitysuitableforbending,flaring,forming,andbrazing.2.References2.1ApplicablePublications—Thefollowingpublicationsformapartofthisspecificationtotheextentspecifiedherein.Unlessotherwisespecified,thelatestissueofSAEpublicationsshallapply.2.1.1SAEPUBLICATIONS—AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001.SAEJ409—ProductAnalysis—PermissibleVariationsfromSpecifiedChemicalAnalysisofaHeatorCastofSteelSAEJ514—HydraulicTubeFittingsSAEJ533—FlaresforTubingSAEJ1677—TestsandProceduresforSAELow-CarbonSteelandCopperNickelTubing2.2RelatedPublication—Thefollowingpublicationisprovidedforinformationpurposesonlyandisnotarequiredpartofthisdocument.2.2.1SAEPUBLICATION—AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001.SAEJ1065—PressureRatingforHydraulicTubingandFittingsSAEJ1453—Fitting—O-RingFaceSeal3.Manufacture—Thetubingshallbemadefromflat-rolledsteelshapedintoatubularform,theedgesofwhicharejoinedandfusedtogetherbyelectric-resistancewelding.Afterformingandwelding,thetubingshallbenormalizedandsubjectedtoacold-drawingoperationthatshallresultina15%minimumreductionincross-sectionalarea,ofwhich8%shallconsistinareductioninwallthickness.Subsequenttocoldworking,thetubingshallbenormalizedviaanatmosphericallycontrolledmethodtoproduceafinishedproductthatwillmeetallrequirementsofthisdocument.SAEJ525RevisedMAY1999-2-4.DimensionsandTolerances—ThetolerancesapplicabletothetubingoutsidediameterandinsidediameterareshowninTable1.ThetolerancesapplicabletotubingwallthicknessareshowninTable2.Dimensionaltolerancescanonlyapplytotwoofthethreetubingdimensions(OD,ID,orwall).Unlessotherwiseagreeduponbetweenthepurchaserandtubeproducer,dimensionaltolerancesshallapplytothetubeODandwalldimension.TABLE1—TUBINGOUTSIDEDIAMETERTOLERANCENominalTubingOD(1)(2)mm1.ODmeasurementsshallbetakenatleast50mmfromtheendofthetubing.2.RefertoSAEJ514fornominaltubingODtobeusedinconjunctionwithstandardhydraulictubefittingsandSAEJ533forrecom-mendedmaximumnominalwallthicknessfordoubleflaring.TubeToleranceOD±mmTubeToleranceID±mmUpto9.500.050.05Over9.50to15.88inclusive0.060.06Over15.88to50.80inclusive0.080.08Over50.80to63.50inclusive0.100.10Over63.50to76.20inclusive0.130.13Over76.20to100.00inclusive0.150.15TABLE2—TUBINGWALLTHICKNESSTOLERANCESNominalWallThickness(1)NominalTubingOutsideDiameterThrough22mm+/–mmNominalTubingOutsideDiameterOver22mmThrough48mm+/–mmNominalTubingOutsideDiameterOver48mmThrough100mm+/–mm0.890.05/0.050.05/0.050.05/0.051.000.05/0.050.05/0.080.05/0.081.250.05/0.050.05/0.080/05/0.081.500.05/0.050.05/0/080.05/0.081.650.05/0.050.05/0/080.05/0.082.000.05/0.050.05/0.080.08/0.082.110.05/0.050.05/0.080.08/0.082.410.05/0.050.05/0.080.08/0.082.500.05/0.080.05/0.100.08/0.082.770.05/0.080.05/0.100.08/0.083.000.08/0.080.05/0.100.08/0.083.050.08/0.080.05/0.100.08/0.083.40—0.05/0.100.08/0.083.75—0.05/0.100.08/0.084.00—0.08/0.100.08/0.104.19—0.08/0.100.08/0.104.57—0.10/0.100.08/0.13SAEJ525RevisedMAY1999-3-5.ManufacturingStandards5.1Straightness—Tubingshallbestraightenedtoatoleranceof0.8mmin1000mm.Straightnesstolerancesshallbemeasuredbyplacinga1000mmstraightedgeagainstthetubewhilelyingonitsneutralaxis.Thepointofmaximumdeflectionofthetubefromthestraightedgeshouldnotbemorethanallowedbythespecificationwhenmeasuredwithafeelergauge.5.2TubingEndCondition—Thetubingwillbeproducedusingnormalmillcut-offpractices.Thiswillinclude,butisnotlimitedtodouble-cutends,saw-cut,androtary-cutends.Carewillbetakentominimizethedistortionofthetubeends.Distortionofthetubeendsmustnotaffectthenormalre-cuttingprocessesthatwillbeperformedbytheenduser.Endsthatrequirefurtherprocessingwillbebyagreementbetweentheproducerandtubepurchaser.5.3SurfaceFinish—Theoutsideandinsidesurfacefinishofthetubearecriticalinordertopreventpossibleleakpathsonflaredfittings,mechanicalformfittings,orotherapplicationswherethesurfaceofthetubebecomesthesealingsurface.Thesurfaceofthetubeshallbefreeofexcessiverollmarks,scoremarks,chatter