1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication prEN 4098 Edition P 1 May 1998 Comments should be sent within six months C5 Chairman after the date of publication to PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA Gulledelle 94 - 8-1200 BRUXELLES - Tel. +3
2、2) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Steel FE-PLI 507 (4OCrMoV12) Remelted Hardened and tempered Forgings De 5 50 mm I 250 MPa 5 Rm 5 1 400 MPa Srie arospatiale Acier FE-PLI 507 (40CrMoVI 2) Refondu Durci par trempe et revenu Pices forges et pice
3、s matrices De 2 50 mm 1 250 MPa I R, I 1 400 MPa Luft- und Raumfahrt Stahl FE-PLI 507 (40CrMoVI 2) Umgeschmolzen Gehrtet und angelassen Gesenk- und Freiformschmiedestcke De 2 50 mm 1 250 MPa 5 R, I 1 400 MPa 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 techni
5、cal 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 countries
6、it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1998-05-29 AECMA Gulledelle 94 B-1200 BRUXELLES Mr Evetts aecma 1998 STD-AECMA PREN Li078-ENGL 1778 m LOL23LL 00/lib37 142 liB Page 3 prEN 4098: 1998 O Introduction This standard is par
7、t 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-PL1507 (40CrMoVI 2) Reme
8、lted Hardened and tempered Forgings De I 50 mm 1 250 MPa I R, I 1 400 MPa for aerospace applications. 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 tex
9、t 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 latest edition of the publication referred to applie
10、s. EN 2157-3 Aerospace series - Steel forging stock and forgings - Technical specification - Part 3: Pre-production and production forgings EN 3971 Aerospace series - Steel FE-PLI507 (40CrMoVI 2) - Consumable electrode remelted - Annealed - Forging stock - a or D I 350 mm 1) EN 4258 Aerospace series
11、 - 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) 1) Published as AECMA Prestandard a
12、t the date of publication of this standard Previous page is blank STD-AECMA PREN 4098-ENGL 1778 1012311 0014b40 9bli Page 4 prEN 4098: 1998 Delivery condition Heat treatment Method of Droduction I Normalized and annealed 910 “C /AC + 750 “C /AC or OQ Hardened and tempered 920 “C I es 940 “C i OQ For
13、ged from forging stock EN 3971 Delivery condition code Use condition Heat treatment Limit dimension(s) mm De I 50 Technical specification EN 2157-3 + e2600“CIOQorAQ A U Hardened and tempered Delivery condition 920 “C 5 6% 940 “C i OQ + er 600 “C / OQ or AQ - 8.1 Test sample(s) See EN 2157-3 Characte
14、ristics Thickness of cladding on each face - % - I 18.2 1 Test Dieces) Direction of test piece See EN 2157-3 L - I Normalized and annealed I Use condition Temperature e Proof stress Rp0,2 Strength R, Elongation A Reduction of area Z I De I 50 I - 9 I Dimensions concerned I mm I “C Ambient Ambient MP
15、a - 21 030 MPa - I 250 I R, I 1 400 % - 2 10 % - 2 35 10 11 12 13 14 15 16 17 - - - - - - - - 25 Rupture stress CR MPa - -, - - 26 Elongation at A% 27 Notes (see line 98) 1) 2) 3) rupture T - Hardness I I 277 HB I 375 HB I 401 I Grain size - 2 7 External defects Macrostructure (Grain flow) See EN 21
16、 57-3 First article G27 Batch uniformity - 2 - Jarking inspection Iimensional inspection dotes See EN 2157-3 First article See EN 21 57-3 -ypical use - - 1) P+Sn10,025 2) Value after blank nitriding : 500 “C it 10 “C / t = 24 h. The “capability clause“ applies. 3) IZOD is optional test and shall ach
17、ieve 20 Ft.lbf minimum. Low alloy general purpose steel ; suitable for nitriding -I See EN 2157-3 -I See EN 2157-3 -I See EN 2157-3 STD Page 6 prEN 4098: 1998 AECMA PREN LiUS-ENGL 1978 m LIIL2311 0014b42 737 m Jroduct qualification Qualification programme to be agreed between manufacturer and purchaser
