1、STD-AECMA PREN 3491-ENGL 1978 1012311 0035437 b07 W AECMA STANDARD NORME AECMA AECMA NORM prEN 3491 Edition P 2 December 1998 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Supersedes issue
2、 P 1 Descriptors: March 1988 ENGLISH VERSION Aerospace series Steel FE-PM3901 (XI 5CrNil7-3) Air melted Hardened and tempered Forgings De 5 I00 mm 900 MPa 2 Rm 2 1 100 MPa Srie arospatiale Acier FE-PM3901 (X15CrNil7-3) labor lair Durci par trempe et revenu Pices forges et pices matrices De I 100 mm
3、900 MPa I R, I 1 100 MPa Luft- und Raumfahrt Stahl FE-PM3901 (Xl5CrNil7-3) Lufterschmolzen Gehrtet und angelassen Gesenk- und Freiformschmiedestcke De I 100 mm 900 MPa I Rm I 1 100 MPa This lerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of
4、 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 technical content shall not be
5、 changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. Affer examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Ofricial Services of the Member countries it will be submitted as
6、a draff 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 - 92138 ISSY-LES-MOULINEAUX CEDEX I Comments should be sent within six months after the date of publication to I
7、 Edition approved for publication 1998-12-31 AECMA Gulledelle 94 8-1200 BRUXELLES C5 Chairman Mr Evetts aecma 19! STD-AECMA PREN 3471-ENGL 1998 U 1123Ll 0015qLB 543 Page 3 prEN 3491: 1998 O In trod uction This standard is part of the series of EN metallic material standards for aerospace application
8、s. 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-PM3901 (X15CrNil7-3) Air melted Hardened and tempered Forgings Der 100 mm 900 MPa I Rm I 1 100 MPa
9、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 text and the publications are listed hereafter. For dated references, subsequ
10、ent 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 applies. EN 2157-3 EN 3365 EN 4050-1 EN 4258 EN 4436 EN 4500-5 Aerospace series
11、- Steel - Forging stock and forgings - Technical specification - Part 3: Pre- production and production forgings 1) Aerospace series - Steel FE-PM3901 (Xi 5CrNil7-3) - Air melted - Softened - Forging stock - a or D I 300 mm Aerospace series - Test method for metallic materials - Ultrasonic inspectio
12、n of bars, plates, forging stock and forgings - Part 1 : General requirements 1) Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use Aerospace series - Steel - Test methods - Determination of Notch direction T I - Temper
13、ature e OC - Time h 25 Rupturestress OR MPa - 26 Elongation at A% - 27 Notes (see line 98) 1) -. rupture STD-AECMA PREN 3491-ENGL 1778 1OL2311 0015420 1T1 II 1 licrostructure EN 4436 ;rain size 2 ixternal defects One per batch iternal defects latch uniformity Marking inspection Dimensional inspectio
14、n Notes Typical use The &-ferrite shall not exceed 5 % See EN 2157-3 See EN 21 57-3 See EN 21 57-3 See EN 2157-3 _ See EN 21 57-3 See EN 21 57-3 1) For De 5 30 mm may be AC _ - STD-AECflA PREN 3491-ENGL 1998 1OL2311 00154ZL 038 W Page 6 prEN 3491: 1998 Product qualification Qualification programme to be agreed between manufacturer and purchaser.
