1、STD-AECMA PREN 3b77-ENGL 1997 m 1012311 00138b1 5b3 m AECMA STANDARD NORME AECMA AECMA NORM prEN 3679 Edition P 1 December 1997 PUBLISHED BY THE EUROPEAN ASSOCiATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 1 1 ICs: ENGLISH VERS
2、ION Aerospace series Steel FE-PM3902 (X7CrNiAIl7-7) Air melted Solution treated and precipitation hardened Plate 6 mm a I 15 mm I 240 MPa I Rm I 1 450 MPa Srie arospatiale Acier FE-PM3902 (X7CrNAI17-7) labor lair Mis en solution et durci par prcipitation Plaques 6 mm a I 15 mm 1 240 MPa I Rm S 1 450
3、 MPa Luft- und Raumfahrt Stahl FE-PM3902 (X7CrNiAI17-7) Lufterschmolzen Lsungsgeglht und ausgelagert Platten 6 mm a 5 15 mm 1 240 MPa 5 Rm I 1 450 MPa This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is pub
4、lished on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee follo wing comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that inter
5、changeability 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 countries it will be submitted as a draft European Standard to CEN
6、 (European Committee for Standardization) for formal vote. I Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LEC-MOULINEAUX CEDEX I Comments should be sent within six months after the date of publication to I I Edition approved for publ
7、ication 1 997- 1 2-3 1 AECMA Gulledeiie 94 I B-1200 BRUXELLES I I C5 Chairman Mr Odorico aecma 199 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD-AECMA PREN 3b79-ENGL 1997 m ZOL23Ll 01i3b2 4TT m Page 3 prEN 3679: 1997 O Introductio
8、n This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-5. 1 Scope This standard specifies the requirements relating to: Steel FE-PM
9、3902 (X7CrNiAI17-7) Air melted Solution treated and precipitation hardened Plate 6 mm a I 15 mm 1 240 MPa I R, I 1 450 MPa for aerospace applications. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative referenc
10、es 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 to this European Standard only when incorporated in it by amendment or revision. For undated references the lat
11、est edition of the publication referred to applies. EN 2043 Aerospace series - Metallic materials - General requirements for semi-finished product qualification (excluding forgings and castings) 1) EN 4235-2 Aerospace series - Steel wrought products - Technical specification - Part 2: Plate, sheet a
12、nd strip 1) EN 4258 Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use 1) EN 4500-5 Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 5: Specific rules for steel 1)
13、 1) Published as AECMA Prestandard at the date of publication of this standard previous page is blank COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD-AECMA PREN 3b77-ENGL 1777 LOL23LL OOL38b3 33b Page 4 prEN 3679: 1997 1 2 Material
14、designation Steel FE-PM3902 (X7CrNiAI17-7) Chemical Element C si Mn P S Cr Cu Ni AI - - - - - - 16,O 6,50 0,75 % max. 0,09 1,OO 1,OO 0,040 0,030 18,O 0.50 7,75 1,50 composition min. Base I 4.1 4.2 r 3 I Method of melting Form Plate Method of production Rolled Air melted 4.3 5 Limit dimension(s) mm 6
15、a15 Technical specification EN 4235-2 Delivery condition code Use condition Delivery condition I Solution treated I W Solution treated and precipitation hardened I 1 025 “CI BI 1 055 “CI t 2 30 min /AC or OQ I Heat treatment 8.1 Test sample(s) See EN 4235-2 Heat treatment 10 11 Delivery condition 74
16、0 “CI es 780“C/ t 2 90 min + cool to er 20 “C I within 1 h I hold for 30 min + 550 “C I BI 580 “CI t 2 90 min /AC Thickness of cladding on % - - each face Direction of test piece - See EN 4235-2 Characteristics - Rm MPa - Rp0,2 MPa Proof stress Elongation A% - 2 1 035 1 240 I Rm I 1 450 26 18.2 1 Te
17、st piece) I See EN 4235-2 I 17 18 18.3 I Heat treatment I Solution treated I Use condition I Hardness I 229 HV 2 38 HRC Shear strength Rc MPa - I 9 I Dimensions concerned I mm I 19 20 6a15 Bending k- - Impact strength - 6a115 I Ambient I - I I I I I I I - I I 16 I I Reduction of area I Z I % I - Il
18、I C Elongation a% - Rupture stress - UR MPa Elongation at A% - ruoture I Notes (see line 98) - COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services STD-AECMA PREN 3b77-ENGL 1777 1012311 U0138b4 272 ixternal defects Marking inspection Dimens
19、ional inspection Notes Typical use Page 5 prEN 3679: 1997 See EN 4235-2 I COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services STD-AECMA PREN 3b79-ENGL 1997 10L231l1 00L38b5 LO9 Page 6 prEN 3679: 1997 roduci qualification See EN 2043 Clualification programme to be agreed between manufacturer and purchaser. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services
