1、STD-AECMA PREN 3490-ENGL 3998 LOL2311 0035432 025 W Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of Dublication to C5 Chairman prEN 3490 Edition P 2 December 1998 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE IND
2、USTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Supersedes issue P 1 March 1988 Descriptors: ENGLISH VERSION Aerospace series Steel FE-PM3901 (X15CrNil7-3) Air melted Hardened and tempered Bar for machining De 5 200 mm 900 MPa 5 Rm 5 I 100 MPa
3、Srie arospatiale Acier FE-PM3901 (XI SCrNi17-3) labor lair Durci par trempe et revenu Barres pour usinage De I 200 mm 900 MPa I Rm I I I00 MPa Luft- und Raumfahrt Stahl FE-PM3901 (XlSCrNil7-3) Lufterschmolzen Gehrtet und angelassen Stangen zur spanenden Bearbeitung De I 200 mm 900 MPa I Rm I I I00 M
4、Pa This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The 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
5、 comment by the Member countries. Subsequent to the publication of this Prestandard, the technical 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 Standa
6、rd Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draff European Standard to CEN (European Committee for Standardization) for formal vote. 1998-12-31 AECMA Gulledelle 94 8-1200 BRUXELLES Mr Evetts I I aecma 199 STD-AECMA PREN 347
7、0-ENGL L99 LOL2311 0015413 Tbl W Page 3 prEN 3490: 1998 O Introduction 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. I Sc
8、ope This standard specifies the requirements relating to: Steel FE-PM3901 (XI 5CrNi17-3) Air melted Hardened and tempered Bar for machining De I 200 mm 900 MPa I Rm I 1 100 MPa for aerospace applications. 2 Normative references This European Standard incorporates by dated or undated reference provis
9、ions 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 any of these publications apply to this European Standard only when incorporated in it by
10、 amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2043 EN 4050-1 EN 4235-3 EN 4258 EN 4436 EN 4500-5 Aerospace series - Metallic materials - General requirements for semi-finished product qualification (excluding forgings and castings) 1) Ae
11、rospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 1 : General requirements 1) Aerospace series - Steel - Wrought products - Technical specification - Part 3: Bar and section 1) Aerospace series - Metallic materials - Genera
12、l organization of standardization - Links between types of EN standards and their use Aerospace series - Steel - Test methods - Determination of Notch direction T I Temperature I eloc - Time stress C Elongation i;-Co Notes (see line 98) STDOAECHA PREN 3470-ENGL 1998 m 1012311 0015415 34 m O Page 5 p
13、rEN 3490: 1998 Microstructure 1 ixternal defects See EN 4235-3 See EN 4436 :leanliness/inclusion content micro-cleanness) - - 7 bacrostructu re See EN 4235-3 See EN 4235-3 Category 2 iternal defects 1 6 7 Marking inspection EN 4050-1 a or D 2 100 mrn may be tested on the product or at an earlier sta
14、ge of manufacturing Class 2 Dimensional inspection Notes - - Typical use See EN 4235-3 1) For De 5 30 mm may be AC 71 The S-ferrite shall not exceed 5 % See EN 4235-3 -I -I See EN 4235-3 -I See EN 4235-3 -I - - Page 6 - prEN 3490: 1998 See EN 2043 Qualification programme to be agreed between manufacturer and purchaser. %duct qualification
