1、BRITISH STANDARDBS EN 3491:2006Aerospace series Steel FE-PM3901 (X15CrNi17-3) Air melted Hardened and tempered Forgings De u 100 mm 900 MPa u Rm u 1 100 MPaThe European Standard EN 3491:2006 has the status of a British StandardICS 49.025.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54
2、g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3491:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978-0-580-
3、49945-6National forewordThis British Standard was published by BSI. It is the UK implementation of EN 3491:2006.The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Subcommittee ACE/61/-/15, Steels.A list of organizations
4、represented on ACE/61/-/15 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendment
5、s issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3491 December 2006 ICS 49.025.10 English Version Aerospace series - Steel FE-PM3901 (X15CrNi17-3) - Air melted - Hardened and tempered - Forgings - De 100 mm - 900 MPa Rm 1 100 MPa Srie arospatiale -
6、 Acier FE-PM3901 (X15CrNi17-3) - labor lair - Tremp et revenu - Pices forges et pices matrices - De 100 mm - 900 MPa Rm 1 100 MPa Luft- und Raumfahrt - Stahl FE-PM3901 (X15CrNi17-3) - Lufterschmolzen - Gehrtet und angelassen - Gesenk- und Freiformschmiedestcke - De 100 mm - 900 MPa Rm 1 100 MPa This
7、 European Standard was approved by CEN on 5 October 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical referenc
8、es concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into
9、its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, L
10、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN Al
11、l rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3491:2006: E2 Foreword This document (EN 3491:2006) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes c
12、arried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, eithe
13、r by publication of an identical text or by endorsement, at the latest by June 2007, and conflicting national standards shall be withdrawn at the latest by June 2007. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENE
14、LEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estoni
15、a, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, EN 3491:20063 Introduction This standard is part of the series of EN metallic material standards for aerospa
16、ce 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-PM3901 (X15CrNi17-3) Air melted Hardened and tempered Forgings De 100 mm 900 MPa Rm 1
17、 100 MPa for aerospace applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments
18、) applies. EN 2157-3, Aerospace series Steel Forging stock and forgings Technical specification Part 3: Pre-production and production forgings. EN 3365, Aerospace series Steel FE-PM3901 (X15CrNi17-3) Air melted Softened Forging stock a or D 300 mm. 1)EN 4258, Aerospace series Metallic materials Gene
19、ral organization of standardization Links between types of EN standards and their use. EN 4436, Aerospace series Steel Test methods Determination of ferrite content. 1)EN 4500-5, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part 5: Specific rules for
20、steels. 1)1) Published as ASD Prestandard at the date of publication of this standard. EN 3491:20064 1 Material designation Steel FE-PM3901 (X15CrNi17-3) Element C Si Mn P S Cr Mo Ni Fe min. 0,12 15,0 2,00 2 Chemical composition % max. 0,20 1,00 1,00 0,030 0,025 17,0 3,00 Base 3 Method of melting Ai
21、r melted 4.1 Form Forgings 4.2 Method of production Forged from forging stock EN 3365 4.3 Limit dimension(s) mm De 100 5 Technical specification EN 2157-3 Delivery condition Softened Hardened and tempered 6.1 Heat treatment 950 C 1 040 C / OQ a + 635 C 685 C / OQ or WQ + 585 C 615 C / OQ or WQ 6.2 D
22、elivery condition code A U Use condition Hardened and tempered Delivery condition 7 Heat treatment Delivery condition + 950 C 1 040 C / OQ a+ 635 C 685 C / OQ or WQ + 585 C 615 C / OQ or WQ Characteristics 8.1 Test sample(s) See EN 2157-3. 8.2 Test piece(s) See EN 2157-3. 8.3 Heat treatment Softened
23、 Use condition 9 Dimensions concerned mm a or D 100 De 100 10 Thickness of cladding on each face % 11 Direction of test piece L 12 Temperature C Ambient13 Proof stress Rp0,2MPa 700 14 Strength RmMPa 900 Rm 1 100 15 Elongation A % 12 16 T Reduction of area Z % 17 Hardness 293 HB 262 HB 331 18 Shear s
24、trength RcMPa 19 Bending k 20 Impact strength KV 20 J; Notch direction T 21 Temperature C 22 Time h 23 Stress aMPa 24 Elongation a % 25 Rupture stress RMPa 26 C Elongation at rupture A % 27 Notes (see line 98) aEN 3491:20065 30 Microstructure 1EN 4436 2One per batch 7The -ferrite shall not exceed 5
25、% 34 Grain size See EN 2157-3. 44 External defects See EN 2157-3. 61 Internal defects See EN 2157-3. 82 Batch uniformity See EN 2157-3. 95 Marking inspection See EN 2157-3. 96 Dimensional inspection See EN 2157-3. 98 Notes a For De 30 mm may be AC. 99 Typical use EN 3491:20066 100 Product qualificat
26、ion Qualification programme to be agreed between manufacturer and purchaser. EN 3491:2006blankBS EN 3491:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in
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