1、STD.AECMA PREN 3971-ENGL 1997 M 1012311 OOL4L77 4V1 M Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months C5 Chairman after the date of publication to prEN 3971 Edition P 1 November 1997 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE I
2、NDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: ENGLISH VERSION Aerospace series Steel FE-PLI 507 (40CrMoV12) Consumable electrode remelted Ann e a I e d Forging stock a or D I350 mm Srie arospatiale Acier FE-PL1 507 (4OCrMoV12) Refondu llect
3、rode consommable Recuit Produits destins la forge a ou D 5 350 mm Luft- und Raumfahrt Stahl FE-PL1 507 (40CrMoV12) Mit selbstverzehrender Elektrode umgeschmolzen Geglht Schmiedevormaterial a oder D I 350 mm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The
4、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 technic
5、al 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 INPS) and formal agreement of the Official Services of the Member countries i
6、t will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1997-11-28 AECMA Gulledelle 94 B-1200 BRUXELLES Mr Odorico aecma 1997 O Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The
7、 general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-5. i Scope This standard specifies the requirements relating to: Steel FE-PL1507 (40CrMoV12) Consumable electrode remelted Annealed Forging stock a or D I350 mm for aerospace appl
8、ications. 2 Normative 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
9、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 2002-8 EN 2003-7 EN 2043 EN 2157-2 EN 2957 EN 4258 EN 4500-5 Aerospace series - Metall
10、ic materials - Test methods - Part 8: Micrographic determination of grain size 1) Aerospace series - Steel - Test methods - Part 7: Macrographic test 1) Aerospace series - Metallic materials - General requirements for semi-finished product qualification (excluding forgings and castings) 1) Aerospace
11、 series - Steel - Forging stock and forgings - Technical specification - Part 2: Forging stock Aerospace series - Method of preparation of forged samples 1) Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use 1) Aerospac
12、e series - Metallic materials - Rules for drafting and presentation of material standards - Part 5: Specific rules for steel 1) 1) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank 1 Material designation Chemical Element Steel FE-PLI 507 (40CrMoV12) C
13、si I Mn I P1) I S I Cr Mo I Ni ISn1)I V I Fe composition % Method of melting Base 1 min. 0,35 0,lO 0,40 - - 3,OO 0,80 - - 0,15 max. 0,43 0,35 0,70 0,015 0,010 3,50 1,lO 0,30 0,025 0,25 I Consumable electrode remelted Form Method of production Forging stock - I a or Da 350 Limit dimension(s) I mm I T
14、echnical specification EN 21 57-2 8.1 8.2 I Test piece(s) Test sample(s) See EN 2157-2 Reforged sample in accordance with EN 2957 or cut from forging stock See EN 21 57-2 8.3 9 1 I I Heat treated before machining with De I 50 mm I Heat treatment Delivery condition See line 29 Dimensions concerned mm
15、 a or Da 350 aorD1350 Thickness of cladding % on each face Direction of test piece - - - L or LT Temperature Proof stress Ambient 2 1030 - e “C - Rp0,2 MPa R, MPa - 1 250 5 R, a 1 400 . I 16 17 18 15 1 I Elongation I A I % I 2 45 Reductionofarea Z % - Hardness I 277 HB 375 a HB a 401 Shear strength
16、I R, IMPa - - 41 I 19 20 Bending k- - - Impact strength - KV 2 25 J ; Notch direction T 2) 3) Time stress a, - 21 22 23 24 25 26 - - - - - - h MPa - Temperature I 8 I C I Elongation Rupture stress I - a% - UR MPa - Elongation A% - at rupture r 27 Notes (see line 98) 1) 2) 3) 2 3 The “capability clau
17、se“ applies A transverse slice selected at a convenient stage of manufacture from a location correspondins to the top of the ingot. 5 7 See line 29 G27 - 7 See EN 2157-2 Category 3 2 3 1 per ingot A transverse slice selected at a convenient stage of manufacture from a location correspondins to the t
18、op of the ingot. Class 3 Class 4 Radial segregation : severity A Ring pattern : severity B - Low alloy general purpose steel ; suitable for nitriding Page 5 prEN 3971 : 1997 ieference heat treatment Hardened and tempered 910 “CI frain size Tl Reforged sample in accordance with EN 2957 See EN 21 57-2
19、 External defects =leanliness/inclusion content ;micro-cleanness) Macrostructure 11 EN 2003-7 51 Non heat treated 71 Class 1 I Freckles : severity A 1 I White spots : severity A Class 2 7 See EN 21 57-2 nternal defects 71 Class 1- 4 2 250 I 250 I 3 Marking inspection -I See EN 21 57-2 See EN 21 57-2
20、 1) P + Sn 2 0,025 2) Value after blank nitriding : 500 “C f 10 “C I t = 24 h. The “capability clause“ applies. 3) IZOD is optional test and shall achieve 20 ft.lbf minimum. 4) Actual heat treatment temperature and time shall be reported on the inspection an( test report. Dimensional inspection Notes Typical use STD Page 6 prEN 3971 : 1997 AECMA PREN 3771-ENGL 1777 E LDL23LL OOL4Ll 772 E Product qualification See EN 2043 halification programme to be agreed between manufacturer and purchaser,
