1、STDmAECHA PREN 2723-ENGL 1997 20223L2 002332Li OB1 AECMA STANDARD NORME AECMA AECMA NORM prEN 291 3 Edition 2 August 1997 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: 49.040.20 Will superse
2、de EN 291 3 March 1996 Descriptors: Aircraft industry, washer, plain washer, alloy steel, cadmium plating, surface treatment, dimensions, designation ENGLISH VERSION Aerospace series Washers, flat, large diameter, in alloy steel, cadmium plated Srie arospatiale Rondelles plates larges, en acier alli
3、, cadmies Luft- und Raumfahrt Scheiben, flach, groer Auendurchmesser, aus legiertem Stahl, verkadmet This “Aerospace series“ Standard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on yellow paper in three equivalent versions (
4、English, French, German). It will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Edition approved for publication 1997-08-29 The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean
5、-Jacques Rousseau 92138 ISSY - LES MOULINEAUX CEDEX - FRANCE STD.AECNA PREN 2913-ENGL 1997 LO32333 0033325 TLB m Page 3 prEN 2913: 1997 1 Scope This standard specifies the characteristics of flat washers, large diameter, in alloy steel, cadmium plated, for maximum operating temperature 235 OC. 2 Nor
6、mative 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 references, subsequent amendments to or revisions of
7、 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 2000 Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of
8、 manufacturers EN 2133 Aerospace series - Cadmium plating of steels, with maximum specified tensile strength equal to or less than 1 450 MPa, copper, copper alloys and nickel alloys 1) EN 2209 Steel FE-PL43 S - 900 MPa I Rm I 1 100 MPa - Sheets, strips and plates 0,5 mm I a I 20 mm - Aerospace serie
9、s 1) EN 2424 Aerospace series - Marking of aerospace products EN 2438 Steel FE-PL62 - 900 MPa I R, 5 1 100 MPa - Bars De I40 mm - Aerospace series 1) 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are expressed in millimetres and apply after surface treatment. Con
10、figuration - Dimensions - Masses 3.2 Materials EN 2209 or EN 2438 3.3 Surface treatment EN 2133, 8 pm to 14 pm Black colour option: code F 1) Published as AECMA Standard at the date of publication of this standard previous page is blank STD-AECMA PREN 2913-ENGL 1777 W LO12311 001332b 754 W Page 4 pr
11、EN 2913: 1997 Values in micrometres apply prior to surface treatment. VI Remove sharp edges 0,l to 0,2. Figure 1 Table 1 Mass 2) Diameter I Dl I 02 03 5 Thickness nom. TOI. code it 10 % 1) I H13 1 h14 code 0,26 06 0,6 10 1 0,44 - t 0,47 040 42 12 050 5,2 15 0,78 1,22 1,95 060 1 6,2 1 18 + 0,2 O I 12
12、- 1-72 2,11 2,8 1 070 1 7,2 1 21 2,78 3,71 5,02 7,85 9,81 12.3 14,1 17,7 120 12,2 36 1) Includes also the flatness tolerance. 2) Approximate values (kg/l O00 pieces), calculated on the basis of 7/85 kg/dm3, given for information purposes only - STD-AECMA PREN ZVJ-ENGL 1qw m 1012311 0013327 870 w Pag
13、e 5 prEN 291 3: 1997 4 Designation EXAMPLE: Identity block I Description block WASHER EN291 3-0801 6F -TI Number of this standard Diameter code (see table 1) Thickness code (see table 1) Black colour code (see 3.3) NOTE: If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style G 6 Quality assurance EN 2000
