1、BRITISH STANDARDBS EN 3972:2006Aerospace series Steel FE-PL1507 (40CrMoV12) Consumable electrode remelted Hardened and tempered Bar for machining De u 50 mm 1 250 MPa u Rm u 1 400 MPaThe European Standard EN 3972:2006 has the status of a British StandardICS 49.025.10g49g50g3g38g50g51g60g44g49g42g3g5
2、8g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3972:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2
3、007 BSI 2007ISBN 978 0 580 50083 1National forewordThis British Standard was published by BSI. It is the UK implementation of EN 3972:2006. The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Panel ACE/61/-/15, Steels.A l
4、ist of organizations 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
5、obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3972 December 2006 ICS 49.025.10 English Version Aerospace series - Steel FE-PL1507 (40CrMoV12) - Consumable electrode remelted - Hardened and tempered - Bar for machining - De 5
6、0 mm - 1 250 MPa Rm 1 400 MPa Srie arospatiale - Acier FE-PL1507 (40CrMoV12) - Refondu llectrode consommable - Tremp et revenu - Barres pour usinage - De 50 mm - 1 250 MPa Rm 1 400 MPa Luft- und Raumfahrt - Stahl FE-PL1507 (40CrMoV12) - Mit selbstverzehrender Elektrode umgeschmolzen - Gehrtet und an
7、gelassen - Stangen zur spanenden Bearbeitung - De 50 mm - 1 250 MPa Rm 1 400 MPa This European Standard was approved by CEN on 18 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 n
8、ational standard without any alteration. Up-to-date lists and bibliographical references 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
9、 any other language made by translation under the responsibility of a CEN member into 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, Fi
10、nland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES
11、 KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3972:2006: E2 Foreword This document (EN 3972:2006) has been prepared by the Aerospace and Defence Indu
12、stries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried 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
13、to CEN. This European Standard shall be given the status of a national standard, either 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
14、 of the elements of this document may be the subject of patent rights. CEN and/or CENELEC 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 imple
15、ment this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the Un
16、ited Kingdom. EN 3972:20063 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. 1 Scope This standard specifies th
17、e requirements relating to: Steel FE-PL1507 (40CrMoV12) Consumable electrode remelted Hardened and tempered Bar for machining De 50 mm 1 250 MPa Rm 1 400 MPa for aerospace applications. 2 Normative references The following referenced documents are indispensable for the application of this document.
18、For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2043, Aerospace series Metallic materials General requirements for semi-finished product qualification (excluding forgings and castings).
19、 1)EN 4258, Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use. EN 4500-5, Aerospace series Metallic materials Rules for drafting and presentation of material standards Part 5: Specific rules for steels. 1)EN 4700-2, Aerospac
20、e series Steel and heat resisting alloys Wrought products Technical specification Part 2: Bar and section. 1)1) Published as ASD Prestandard at the date of publication of this standard. EN 3972:20064 1 Material designation Steel FE-PL1507 (40CrMoV12) Element C Si Mn P aS Cr Mo Ni SnaV Fe min. 0,35 0
21、,10 0,40 3,00 0,80 0,15 2 Chemical composition % max. 0,43 0,35 0,70 0,015 0,010 3,50 1,10 0,30 0,025 0,25 Base 3 Method of melting Consumable electrode remelted 4.1 Form Bar for machining 4.2 Method of production 4.3 Limit dimension(s) mm De 50 b5 Technical specification EN 4700-2 Delivery conditio
22、n Annealed bHardened and tempered 6.1 Heat treatment 910 C 950 C / t 1 h / OQ + 600 C / t 1 h / OQ or AC 6.2 Delivery condition code A UUse condition Hardened and tempered cDelivery condition 7 Heat treatment Delivery condition + 910 C 950 C / t 1 h / OQ + 600 C / t 1 h / OQ or AC Characteristics 8.
23、1 Test sample(s) See EN 4700-2. See EN 4700-2. D = 16 mm Cut from bar delivered in the annealed condition 8.2 Test piece(s) See EN 4700-2. See EN 4700-2. Heat treated before machining 8.3 Heat treatment Annealed Hardened and tempered See line 29. 9 Dimensions concerned mm a or D 100 De 50 a or D 100
24、 10 Thickness of cladding on each face % 11 Direction of test piece L L L 12 Temperature C Ambient Ambient Ambient 13 Proof stress Rp0,2MPa 1 030 1 030 14 Strength RmMPa 1 250 Rm 1 400 1 250 Rm 1 400 15 Elongation A % 10 10 16 T Reduction of area Z % 35 35 17 Hardness 277 HB 375 HB 401 375 HB 401 18
25、 Shear strength RcMPa 19 Bending k 20 Impact strength KV 25 J ; Notch direction T d, eKV 25 J ; Notch direction T d, e21 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) a, b, c, d, e EN 3972:20065 29 Reference heat
26、 treatment Hardened and tempered 910 C 950 C / t 30 min / OQ + temper 600 C / t 1 h / OQ or AC f34 Grain size See EN 4700-2. 5 Use condition 7 G 7 44 External defects See EN 4700-2. 50 Cleanliness/Inclusion content See EN 4700-2. (micro-cleanness) 7 Category 3 51 Macrostructure See EN 4700-2.5 Deliv
27、ery condition 7 Class 1 Freckles: severity A Class 2 White spots: severity A Class 3 Radial segregation: severity A Class 4 Ring pattern: severity B 59 Decarburization See EN 4700-2.61 Internal defects EN 4700-2.7 Class 4 95 Marking inspection See EN 4700-2. 96 Dimensional inspection See EN 4700-2.
28、98 Notes aP + Sn 0,025 bMaterial with a a or D 50 mm may be delivered in the annealed condition. cOnly to be heat treated when De 50 mm dValue after blank nitriding: 500 C 10 C / t = 24 h. The “capability clause“ applies. eIZOD is optional test and shall achieve 20ft.lbf minimum. fActual heat treatm
29、ent temperature and time shall be reported on the inspection and test report. 99 Typical use Low alloy general purpose steel; suitable for nitriding. EN 3972:20066 100 Product qualification See EN 2043. Qualification programme to be agreed between manufacturer and purchaser. EN 3972:2006blankBS EN 3
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