1、BRITISH STANDARD AEROSPACE SERIES BS EN 2046:2001 Hexagonal bars, drawn, in aluminium and aluminium alloys Tolerance class h 11 Width across flats 7mm a 50 mm Dimensions The European Standard EN 2046:2001 has the status of a British Standard ICS 49.025.20; 49.035 NO COPYING WITHOUT BSI PERMISSION EX
2、CEPT AS PERMITTED BY COPYRIGHT LAWBS EN 2046:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 24 December 2001 BSI 24 December 2001 ISBN 0
3、580 37990 6 National foreword This British Standard is the official English language version of EN 2046:2001. The UK participation in its preparation was entrusted to Technical Committee ACE/61, Inspection and testing requirements for aerospace metallic materials, which has the responsibility to: A
4、list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Internat
5、ional Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Bri
6、tish Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European de
7、velopments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments i
8、ssued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN2046 December2001 ICS49.025.20 Englishversion AerospaceseriesHexagonalbars,drawninaluminiumand aluminiumalloysToleranceclassh11Widthacrossflats7 mm a 50mmDimensions SriearospatialeBarreshexagonales,tiresen
9、 aluminiumetalliagesdaluminiumClassedetolranceh 11Surplats7mm a 50mmDimensions LuftundRaumfahrtSechskantstangen,gezogenaus AluminiumundAluminiumlegierungenToleranzklasseh 11Schlsselweite7mm a 50mmMae ThisEuropeanStandardwasapprovedbyCENon2May2001. CENmembersareboundtocomplywiththeCEN/CENELECInternal
10、RegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialve
11、rsions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,German
12、y,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyany
13、meansreserved worldwideforCENnationalMembers. Ref.No.EN2046:2001EEN2046:2001(E) 2 Foreword ThisEuropeanStandardhasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). AfterinquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNa
14、tionalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyJune2002,andconflictingnationalstandardsshallbewithdrawnat thelatestbyJune2
15、002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal, Spain,Sweden,Switzerla
16、ndandtheUnitedKingdom.EN2046:2001(E) 3 0 Introduction ThisstandardispartoftheseriesofENmetallicmaterialstandardsforaerospaceapplications.Thegeneral organizationofthisseriesisdescribedinEN4258. 1 Scope Thisstandardspecifiesthedimensionsandtolerancesof: Hexagonalbars,drawn inaluminiumandaluminiumalloy
17、s Toleranceclassh11 Widthacrossflats7mm a 50mm foraerospaceapplications. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedrefere
18、nces,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN3848 AerospaceseriesSemifinishedmetallicproductsMethodofmeasuringformdeviations EN4258 Aer
19、ospaceseriesMetallicmaterialsGeneralorganizationofstandardizationLinks betweentypesofENstandardsandtheiruse 3 Form Seefigure1. Figure1EN2046:2001(E) 4 4 Recommendeddimensionsandmass 4.1 Widthacrossflatsandmass Seetable1. Table1 Nominal a mm Linearmass a kg/m 70 , 1 2 80 , 1 6 10 0,24 11 0,29 12 0,35
20、 13 0,41 14 0,48 16 0,62 17 0,70 19 0,88 20 0,97 22 1,2 24 1,4 25 1,5 27 1,8 30 2,2 32 2,5 36 3,1 41 4,1 46 5,1 50 6,1 a Forinformation,calculatedwithadensityof2,8kg/dm 3 4.2 Length Theordershallspecifyifbarsaretobesuppliedinfixedorinrandomlengths.Intheeventofasupplyof randomlengthstheminimumandmaxi
21、mumvaluesforthelengthsshallbespecifiedontheorder.EN2046:2001(E) 5 5 Tolerances 5.1 Dimensionaltolerances 5.1.1 Widthacrossflats Seetable2. Table2 Dimensionsinmillimetres Widthacrossflats Toleranceclass 7 a 50 h11 5.1.2 Length Seetable3,onlyapplicabletobarssuppliedinfixedlengths. Table3 Dimensionsinm
22、illimetres Length Tolerances 6000 6 0 6000 10 0 5.1.3 Cornerradii Seetable4. Table4 Dimensionsinmillimetres Widthacrossflats Cornerradii r 7 a 8 0,2 8 a 40 0,4 40 a 50 0,6 5.2 Geometrictolerances 5.2.1 Straightness 5.2.1.1 Methodofmeasurementandsymbols SeeEN3848.EN2046:2001(E) 6 5.2.1.2 Tolerances S
23、eetable5. Table5 Dimensionsinmillimetres Straightnessdeviation: Widthacrossflats Y 1 permetre Y 2 onanylength X 2 a 7 a 50 2 0,6 a X2 400 5.2.2 Twist 5.2.2.1 Methodofmeasurementandsymbol SeeEN3848. 5.2.2.2 Tolerances Seetable6. Table6 Dimensionsinmillimetres Twist v: Widthacrossflats permetre ontota
24、llength a 7 a 30 1,5 3 30 a 50 2 4 a Mayberequiredif 6000 5.2.3 Surfaceflatness 5.2.3.1 Methodofmeasurement SeeEN3848. 5.2.3.2 Tolerances Thesurfaceflatnesstoleranceshallbeincludedinthewidthacrossflatstolerances.BS EN 2046:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Instituti
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