1、AECMA STANDARD NORME AECMA AECMA NORM prEN 4411 Edition P 1 May 1998 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Sheets, cold rolled in stee
2、l Thickness 0,5 mm I a I 3,O mm Dimensions Srie arospatiale Tles, lamines froid en acier paisseurs 0.5 mm I a I 3.0 mm Dim ens i on s Luft- und Raumfahrt Bleche, kaltgewalzt aus Stahl Dicken 0,5 mm I a 2 3,O mm Mae This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AEC
3、MA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the
4、 technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member cou
5、ntries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX Comments should be sent within six months aft
6、er the date of publication to I Edition approved for publication I 1998-05-29 AECMA Gulledelle 94 6-1 200 BRUXELLES C5 Chairman Mr Evetts aecma 1998 STD-AECMA PREN LtLtLL-ENGL 1998 = LOL23LL 0014b82 313 Page 3 prEN 441 1 : 1998 e O introduction a This standard is part of the series of EN metallic ma
7、terial standards for aerospace applications. The general organization of this series is described in EN 4258. 1 Scope This standard specifies the dimensions and tolerances of: Sheets, cold rolled in steel Thickness 0,5 mm I a I3,O mm for aerospace applications. 2 Normative references This European S
8、tandard 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 references, subsequent amendments to or revisions of any of these publications apply
9、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 3848 Aerospace series - Semi-finished metallic products - Method of measuring form deviations 1) EN 4258 Aerospace series - Metallic m
10、aterials - General organization of standardization - Links between types of EN standards and their use 11 3 Form See figure 1. Figure 1 1) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank - - STD*AECMA PREN 4411-ENGL 1998 1012311 0014b83 25T Page 4 pr
11、EN 441 1 : 1998 - Nominal mm a 4 Recommended dimensions and mass Typical format Maximum length Mass per unit area 1) kg/m2 b x& e mm x mm mm See table 1. Table 1 4 O00 4 O00 3,9 4,7 I 0,6 I 600 x 1 200 I 1,6 8 O00 7,9 1 or 1 O00 x 2 O00 or 1 200 x 2 500 8 O00 8 O00 9,4 8 O00 11,0 8 O00 12,6 8 O00 14
12、,1 8 O00 15,7 Thickness 0,5 I a I0,6 Tolerances for width: b s 1 200 1 200 2 500 I 0,004 x ! 5.2.2 Lateral curvature 5.2.2.1 Method of measurement and symbol See EN 3848. STD-AECMA PREN LiLiLL-EMGL 1798 D L0123LL 001ilib85 O22 M Page 6 prEN 441 1: 1998 Thickness 0,5 I a I 3,O 5.2.2.2 Tolerances See
13、table 6. The lateral curvature may be concave or convex. Table 6 Lateral curvature F on: width length 2 0,002 x b s 0,002 x e Dimensions in millimetres rl 200 1200l 500 I10 2 15 I20 I8 I10 I15 ell 200 1200I 500 W= 300 I10 I 15 I20 13 18 I10 5 15 5 2,4 5.2.3 Flatness 5.2.3.1 Method of measurement and symbols See EN 3848. 5.2.3.2 Tolerances See table 7. Table 7 Dimensions in millimetres Thickness 0,5 a I1,4 1,4 a I 3,O width Flatness deviation f for: I length I chord:
