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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2046:2001 Hexagonal bars, drawn, in aluminium and aluminium alloys Tolerance class h 11 Width across flats 7 mm? 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
2、 EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2046:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published unde
3、r the authority of the Standards Policy and Strategy Committee on 24 December 2001 BSI 24 December 2001 ISBN 0 580 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 AC
4、E/61, Inspection and testing requirements for aerospace metallic materials, which has the responsibility to: A 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 publication
5、s referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International 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
6、 of a contract. Users of British Standards are responsible for their correct application. Compliance with a British 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 interpretat
7、ion, or proposals for change, and keep the UK interests informed; monitor related international and European developments 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 cov
8、er. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EU
9、ROPISCHE NORM EN 2046 December 2001 ICS 49.025.20 English version Aerospace series - Hexagonal bars, drawn in aluminium and aluminium alloys - Tolerance class h 11 - Width across flats 7 mm ? a ? 50 mm - Dimensions Srie arospatiale - Barres hexagonales, tires en aluminium et alliages daluminium - Cl
10、asse de tolrance h 11 - Surplats 7 mm ? a ? 50 mm - Dimensions Luft- und Raumfahrt - Sechskantstangen, gezogen aus Aluminium und Aluminiumlegierungen - Toleranzklasse h 11 - Schlsselweite 7 mm ? a ? 50 mm - Mae This European Standard was approved by CEN on 2 May 2001. CEN members are bound to comply
11、 with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Ce
12、ntre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
13、versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EURO
14、PEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2046:2001 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:30
15、:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2046:2001 (E) 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard has received the a
16、pproval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2002, and co
17、nflicting national standards shall be withdrawn at the latest by June 2002. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Ge
18、rmany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2046:2001 (E) 3 0Introduction This standard is part of t
19、he series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. 1Scope This standard specifies the dimensions and tolerances of: Hexagonal bars, drawn in aluminium and aluminium alloys Tolerance class h 11 Width across flats 7
20、mm ? a ? 50 mm for aerospace applications. 2Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated refer
21、ences, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 3848Aerospace series Semi-finished metallic products M
22、ethod of measuring form deviations EN 4258Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use 3Form See figure 1. Figure 1 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c)
23、BSI EN 2046:2001 (E) 4 4Recommended dimensions and mass 4.1Width across flats and mass See table 1. Table 1 Nominal a mm Linear mass a kg/m 70,12 80,16 100,24 110,29 120,35 130,41 140,48 160,62 170,70 190,88 200,97 221,2 241,4 251,5 271,8 302,2 322,5 363,1 414,1 465,1 506,1 a For information, calcul
24、ated with a density of 2,8 kg/dm3 4.2Length The order shall specify if bars are to be supplied in fixed or in random lengths. In the event of a supply of random lengths the minimum and maximum values for the lengths shall be specified on the order. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov
25、 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2046:2001 (E) 5 5Tolerances 5.1Dimensional tolerances 5.1.1Width across flats See table 2. Table 2 Dimensions in millimetres Width across flatsTolerance class 7 ? a ? 50h 11 5.1.2Length See table 3, only applicable to bars supplied in fixed
26、lengths. Table 3 Dimensions in millimetres LengthTolerances ? ? 6 000 ? 6 0 ? ? 6 000 ? 10 0 5.1.3Corner radii See table 4. Table 4 Dimensions in millimetres Width across flatsCorner radii r 7 ?a ?8? 0,2 8 ?a ? 40? 0,4 40 ?a ? 50? 0,6 5.2Geometric tolerances 5.2.1Straightness 5.2.1.1Method of measur
27、ement and symbols See EN 3848. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2046:2001 (E) 6 5.2.1.2Tolerances See table 5. Table 5 Dimensions in millimetres Straightness deviation: Width across flats Y1 per metreY2 on any length X2 a 7
28、 ? a ? 50? 2? 0,6 a X2 ? 400 5.2.2Twist 5.2.2.1Method of measurement and symbol See EN 3848. 5.2.2.2Tolerances See table 6. Table 6 Dimensions in millimetres Twist v: Width across flats per metreon total length a 7 ? a ? 30? 1,5? 3 30 ? a ? 50? 2? 4 a May be required if ? ? 6 000 5.2.3Surface flatne
29、ss 5.2.3.1Method of measurement See EN 3848. 5.2.3.2Tolerances The surface flatness tolerance shall be included in the width across flats tolerances. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na,
30、 Fri Nov 03 01:30:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2046:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the inter
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