BS EN 755-8 2008

BRITISHSTANDARDBSEN755-8:2008Aluminiumandaluminiumalloys—Extrudedrod/bar,tubeandprofiles—Part8:Portholetubes,tolerancesondimensionsandformICS77.150.10LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIBSEN755-8:2008ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30April2008©BSI2008ISBN9780580555633NationalforewordThisBritishStandardistheUKimplementationofEN755-8:2008.ItsupersedesBSEN755-8:1998whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeNFE/35,Lightmetalsandtheiralloys.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.Amendments/corrigendaissuedsincepublicationDateCommentsLicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN755-8March2008ICS77.150.10SupersedesEN755-8:1998EnglishVersionAluminiumandaluminiumalloys-Extrudedrod/bar,tubeandprofiles-Part8:Portholetubes,tolerancesondimensionsandformAluminiumetalliagesd'aluminium-Barres,tubesetprofilésfilés-Partie8:Tubesfilésàpont,tolérancessurdimensionsetformeAluminiumundAluminiumlegierungen-StranggepressteStangen,RohreundProfile-Teil8:MitKammerwerkzeugstranggepressteRohre,GrenzabmaßeundFormtoleranzenThisEuropeanStandardwasapprovedbyCENon10February2008.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCENManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2008CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN755-8:2008:ELicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)2ContentsPageForeword.............................................................................................................................................................31Scope......................................................................................................................................................52Tolerancesondimensions...................................................................................................................62.1General...................................................................................................................................................62.2Diameter-Roundtube..........................................................................................................................62.3Width,depthorwidthacrossflats-squares,rectangles,hexagons,octagons............................72.4Wallthicknessvariation(eccentricity)................................................................................................82.5Length....................................................................................................................................................92.6Squarenessofcutends......................................................................................................................103Tolerancesonform.............................................................................................................................103.1General.................................................................................................................................................103.2Straightness........................................................................................................................................103.3Convexity-Concavity...........................................................................................................................113.4Twist.....................................................................................................................................................123.5Angularity.............................................................................................................................................133.6Cornerandfilletradii..........................................................................................................................143.7Depthofdentsforroundtube...........................................................................................................15AnnexA(informative)Wallthicknessvariation(eccentricity).....................................................................16A.1General.................................................................................................................................................16A.2Specifyingroundtubesizesandtolerances....................................................................................16A.2.1General.................................................................................................................................................16A.2.2WallthicknessvariationfortubesspecifiedasOD×torID×t.....................................................16A.2.3WallthicknessvariationfortubesspecifiedasOD×ID.................................................................17Bibliography.....................................................................................................................................................18BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)3ForewordThisdocument(EN755-8:2008)hasbeenpreparedbyTechnicalCommitteeCEN/TC132“Aluminiumandaluminiumalloys”,thesecretariatofwhichisheldbyAFNOR.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbySeptember2008,andconflictingnationalstandardsshallbewithdrawnatthelatestbySeptember2008.ThisdocumentsupersedesEN755-8:1998.Withinitsprogrammeofwork,TechnicalcommitteeCEN/TC132entrustedCEN/TC132/WG5"Extrudedanddrawnproducts"toreviseEN755-8:1998.Thefollowingtechnicalmodificationshavebeenintroducedduringtherevision:Clause1:ScopeisclarifiedwithrespecttowhatisnotincludedAlloysENAW-5049,ENAW-6008,ENAW-6110A,ENAW-6014,ENAW-6360,ENAW-6262A,ENAW-6065,ENAW-6182,ENAW-7108,ENAW-7108AareaddedSubclause2.4andTable3:Requirementstowallthicknessvariation(eccentricity)isintroducedAnnexA:InformativeAnnexAisaddedexplainingwallthicknessvariation(eccentricity)EN755comprisesthefollowingpartsunderthegeneraltitle"Aluminiumandaluminiumalloys—Extrudedrod/bar,tubeandprofiles":Part1:TechnicalconditionsforinspectionanddeliveryPart2:MechanicalpropertiesPart3:Roundbars,tolerancesondimensionsandformPart4:Squarebars,tolerancesondimensionsandformPart5:Rectangularbars,tolerancesondimensionsandformPart6:Hexagonalbars,tolerancesondimensionsandformPart7:Seamlesstubes,tolerancesondimensionsandformPart8:Portholetubes,tolerancesondimensionsandformPart9:Profiles,tolerancesondimensionsandformAttentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CEN[and/orCENELEC]shallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.CEN/TC132affirmsitisitspolicythatinthecasewhenapatenteerefusestograntlicensesonstandardizedstandardsproductsunderreasonableandnotdiscriminatoryconditionsthenthisproductshallberemovedfromthecorrespondingstandard.BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)4AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Bulgaria,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)51ScopeThisdocumentspecifiesthetolerancesondimensionsandformforaluminiumandaluminiumalloyextrudedportholetubeswithanoutsidediameter(OD)from8mmto450mm(roundtube,seeFigure1)orwithacrosssectioncontainedwithinacircumscribingcircle(CD)from10mmto350mm(otherthanroundtube,seeFigure2),suppliedinstraightlengths.Thisstandardonlyappliestoextrudedportholetubeforgeneralengineeringapplicationsmadeinthefollowingalloys:ENAW-1050A,ENAW-1200,ENAW-1350;ENAW-3003,ENAW-3103;ENAW-5005,ENAW-5005A,ENAW-5049,ENAW-5051A,ENAW-5251,ENAW-5052;ENAW-6101A,ENAW-6101B,ENAW-6005,ENAW-6005A,ENAW-6008,ENAW-6110A,ENAW-6012,ENAW-6014,ENAW-6018,ENAW-6351,ENAW-6060,ENAW-6360,ENAW-6061,ENAW-6261,ENAW-6262,ENAW-6262A,ENAW-6063,ENAW-6063A,ENAW-6463,ENAW-6065,ENAW-6081,ENAW-6082;ENAW-6182,ENAW-7003,ENAW-7005,ENAW-7108,ENAW-7108A,ENAW-7020.ThetemperdesignationsusedinthispartareaccordingtoEN515.Thisstandardonlyappliestotubeproducedbythetubeporthole/bridgemethod.Thisstandarddoesnotapplyto:extrudedtubesproducedbytheseamless,die/mandrelmethod(EN755-7),tubesdeliveredincoils(prEN13957),coiledtubescuttolength(prEN13957).Figure1—RoundtubeBSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)6Figure2—Circumscribingcircleforotherthanroundtube2Tolerancesondimensions2.1GeneralWhenoutsidediameterOD,insidediameterID,andwallthicknesst(ortheirequivalentdimensionsinotherthanroundtube)areallspecified,standardtolerancesshallapplytoanytwoofthesedimensions,butnottoallthree.Asaresult,thepurchasershallonlystatetwonominaldimensionsonanygivenorder.2.2Diameter-RoundtubeMeandiameterisdefinedastheaverageoftwodiametermeasurementstakenatrightanglestoeachotheratanypositionalongthelength.ThetolerancesondiameterarespecifiedinTable1.BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)7Table1—TolerancesondiameterforroundtubeDimensionsinmillimetresToleranceondiameterDiameter(ODorID)MaximumallowabledeviationofdiameteratanypointfromspecifieddiameteraOverUptoandincludingMaximumallowabledeviationofmeandiameterfromspecifieddiameterfNon-annealedandnonheattreatedtubebHeattreatedtubecAnnealedtubed≥818±0,25e±0,40e±0,60e±1,5e1830±0,30±0,50±0,70±1,83050±0,35±0,60±0,90±2,25080±0,40±0,70±1,1±2,680120±0,60±0,90±1,4±3,6120200±0,90±1,4±2,0±5,0200350±1,4±1,9±3,0±7,6350450±1,9±2,8±4,0±10,0aNotapplicabletotubeshavingawallthicknesslessthan2,5%ofthespecifiedoutsidediameter.Thetolerancefortubeswithwallthicknesslessthan2,5%ofthespecifiedoutsidediametershallbedeterminedbymultiplyingtheapplicabletoleranceasfollows:-wallthicknessover2,0%uptoandincluding2,5%ofoutsidediameter:1,5xtolerance;-wallthicknessover1,5%uptoandincluding2,0%ofoutsidediameter:2,0xtolerance;-wallthicknessover1,0%uptoandincluding1,5%ofoutsidediameter:3,0xtolerance;-wallthicknessover0,5%uptoandincluding1,0%ofoutsidediameter:4,0xtolerance.bAppliestoallalloysinForH112tempers.cAppliestoallalloysinT4,T5,T6,T64,T66andTx511tempers.dAppliestoallalloysinO,H111andTx510tempers.eThistoleranceappliesforoutsidediameteronly,i.e.tubeinthissizerangecanonlybespecifiedas"OutsideDiameterxWallThickness".fNotapplicabletoTx510orTx511tempers.2.3Width,depthorwidthacrossflats-squares,rectangles,hexagons,octagonsThetolerancesonwidth,depthorwidthacrossflatsarespecifiedinTable2.BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)8Table2—Tolerancesonwidth,depthorwidthacrossflatsDimensionsinmillimetresTolerancesonwidth,depthorwidthacrossflatsabWidth,depthorwidthacrossflatsCD≤1001005-300,300,2030600,400,30601000,600,401001500,900,601502001,20,802003501,81,23.4TwistTwistTshallbemeasuredasshowninFigure5byplacingthetubeonaflatbaseplate,thetuberestingunderitsownmassandmeasuringthemaximumdistanceatanypointalongthelengthbetweenthebottomsurfaceofthetubeandthebaseplatesurface.TwisttolerancesarespecifiedinTable8asafunctionofthewidthWandthelengthLofthetube.BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)13Key1baseplateFigure5—MeasurementoftwistTable8—TwisttolerancesDimensionsinmillimetresTwisttoleranceTWidthWOntotaltubelengthLOverUptoandincludingper1000mmoflengthauptoandincluding6000over6000≥10301,22,53,030501,53,04,0501002,03,55,01002002,55,07,02003502,56,08,0aTwisttolerancesforlengthslessthan1000mmshallbesubjecttoagreementbetweensupplierandpurchaser3.5AngularityThedeviationfromsquareofsquareandrectangulartubesshallbemeasuredasshowninFigure6.ThemaximumallowabledeviationfromsquareisspecifiedinTable9asafunctionoftubedepthB.Incaseofrectangulartubes,thetoleranceonsquarenessshallapplytotheshortersideofthetube.BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)14Themaximumallowabledeviationinanangleotherthanarightangle(hexagonaltubes,octagonaltubes)shallbeincludedwithinthewidthacrossflatstolerances,seeTable2.Figure6—MeasurementofdeviationfromsquareTable9—SquarenesstolerancesforsquareandrectangulartubesDimensionsinmillimetresDepthBOverUptoandincludingMaximumallowabledeviationZfromsquare-300,430500,750801,0801201,41201802,01802402,62403503,13.6CornerandfilletradiiSharpcornersandfilletradiimaybeslightlyroundedunlessotherwiseindicatedonthedrawing.ThemaximumallowableradiiarespecifiedinTable10.WhenacornerorfilletradiusisspecifiedthemaximumallowabledeviationfromthespecifiedradiusisgiveninTable11.BSEN755-8:2008LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIEN755-8:2008(E)15Table10—MaximumallowablecornerandfilletradiiDimensionsinmillimetresWallthicknessMaximumallowablecornerandfilletradii≤50,8>51,5Table11—MaximumallowabledeviationfromspecifiedcornerandfilletradiiSpecifiedradiusmmMaximumallowabledeviationfromnominalvalueoftheradius≤5±0,5mm>5±10%3.7DepthofdentsforroundtubeItisrecognisedincertainapplicationsthatthedepthofsurfacedentscanbeanimportantfactorparticularlyforroundtubewithlargediametertowallthicknessratio