1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 4631:2013Aerospace series Steel X4CrNiMo16-5-1 (1.4418) Air melted Hardened and tempered Bar De null 200 mm 900 MPa null Rm null 1 050 MPaBS EN 4631:2013 BRITISH STANDARDNa
2、tional forewordThis British Standard is the UK implementation of EN 4631:2013. It supersedes BS EN 4631:2007, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e A C E / 6 1 / - / 1 5 , S t e e l s f o r A e r o s p a c e P u r p o s e s .A
3、 list of organizations represented on this committee 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. The British Standards Institution 2013. Published by BSI Standa
4、rds Limited 2013.ISBN 978 0 580 79249 6 ICS 49.025.10 Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate T e x
5、t a f f e c t e dBS EN 4631:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4631 February 2013 ICS 49.025.10 Supersedes EN 4631:2007English Version Aerospace series - Steel X4CrNiMo16-5-1 (1.4418) - Air melted - Hardened and tempered - Bar - De 200 mm - 900 MPa Rm 1 050 MPa Srie arospatiale
6、 - Acier X4CrNiMo16-5-1 (1.4418) - labor lair - Tremp et revenu - Barres - De 200 mm -900 MPa Rm 1 050 MPa Luft- und Raumfahrt - Stahl X4CrNiMo16-5-1 (1.4418) - Lufterschmolzen - Gehrtet- und angelassen - Stangen - De 200 mm - 900 MPa Rm 1 050 MPa This European Standard was approved by CEN on 24 Aug
7、ust 2012. 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 references concerning such national standards may be obt
8、ained on application to the CEN-CENELEC Management Centre 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 its own language and notified to the C
9、EN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irelan
10、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Ma
11、rnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4631:2013: EBS EN 4631:2013EN 4631:2013 (E) 2 Contents Page Foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 BS EN 4631:2013 EN 4631:2013 (
12、E) 3 Foreword This document (EN 4631:2013) has been prepared by the Aerospace and Defence Industries 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 Ass
13、ociations 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, either by publication of an identical text or by endorsement, at the latest by August 2013, and conflicting national standard
14、s shall be withdrawn at the latest by August 2013. Attention is drawn to the possibility that some 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. This document supersedes EN 4631:20
15、07. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
16、 Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 4 Introduction This standard is part of the series of EN metallic material standard
17、s for aerospace applications. The generalorganization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-005. BS EN 4631:2013EN 4631:2013 (E) 5 1 Scope This European Standard specifies the requirements relating to: Steel X4CrNiMo16-5-1 (1.4418) Air mel
18、tedHardened and tempered Bar De 200 mm 900 MPa Rm 1 050 MPa for aerospace applications. NOTE Other designation: Z 8 CND 17-04. Only the chemical composition of this standard must be considered. 2 Normative references The following documents, in whole or in part, are normatively referenced in this do
19、cument and areindispensable for its application. For dated references, only the edition cited applies. For undated references,the latest edition of the referenced document (including any amendments) applies. EN 2950, Aerospace series Test method Wrought heat resisting alloys Semi-finished products a
20、ndparts Conditions for macrographic and micrographic examination Atlas of structures and defects prEN 2951, Aerospace series Metallic materials Test method Micrographic determination of contentof non-metallic inclusions EN 4050-4, Aerospace series Test method for metallic materials Ultrasonic inspec
21、tion of bars, plates,forging stock and forgings Part 4: Acceptance criteria EN 4258, Aerospace series Metallic materials General organization of standardization Links betweentypes of EN standards and their use EN 4500-005, Aerospace series Metallic materials Rules for drafting and presentation of ma
22、terialstandards Part 005: Specific rules for steels EN 4629, Aerospace series Steel FE-PM 3504 (X4CrNiMo16-5-1) Air melted Hardened andtempered Forging stock De 300 mm 1)EN 4700-002, Aerospace series Steel and heat resisting alloys Wrought products Technicalspecification Part 002: Bar and section EN
23、 ISO 643, Steels Micrographic determination of the apparent grain size (ISO 643)AMS 2315, Determination of delta ferrite content 2)1) Published as ASD-STAN Standard at the date of publication of this standard (www.asd-stan.org).2) Published as SAE National (US) Society of Automotive Engineers (http:
24、/www.sae.org/).BS EN 4631:2013 EN 4631:2013 (E) 6 1 Material designation Steel X4CrNiMo16-5-1 (1.4418) 2 Chemical composition% Element C Si MnaP bS bN Cr Mo Ni Femin. 0,020 15,00 0,80 4,00 Base max. 0,06 0,70 1,50 0,030 0,005 17,00 1,50 6,003 Method of melting Air melted 4.1 Form Bar 4.2 Method of p
25、roduction 4.3 Limit dimension(s) mm De 200 5 Technical specification EN 4700-002 6.1 Delivery condition Annealed Hardened and tempered Heat treatment 1 010 C 1 060 C / OQ or WQ c + 550 C 620 C 6.2 Delivery condition code A U 7 Use condition Hardened and tempered Delivery condition Heat treatment Del
26、ivery condition + 1 010 C 1 060 C / OQ or WQ c + 550 C 620 C Characteristics 8.1 Test sample(s) See EN 4700-002. 8.2 Test piece(s) See EN 4700-002. 8.3 Heat treatment Annealed Use condition 9 Dimensions concerned mm De 200 De 75 75 De 200 10 Thickness of cladding on each face% 11 Direction of test p
27、iece L LT 12 T Temperature C Ambient Ambient Ambient 13 Proof stress Rp0,2 MPa 700 700 14 Strength RmMPa 900 Rm 1 050 900 Rm 1 050 15 Elongation A % 16 12 16 Reduction of area Z % 17 Hardness HBW 293 269 HBW 331 269 HBW 331 18 Shear strength Rc MPa 19 Bending k 20 Impact strength KV J 120 J at 20 CN
28、otch direction T 70 J at 40 CNotch direction T 60 J at 20 CNotch direction L 35 J at 40 CNotch direction L 21 CTemperature C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupture stress RMPa 26 Elongation atrupture A % 27 Notes (see line 98) a, b, cBS EN 4631:2013EN 4631:2013 (E) 7 30 Microstructur
29、e EN 4700-002 1 See AMS 2315. 7 The ferrite content shall not exceed 5 %.34 Grain size EN 4700-002 1 See EN ISO 643. 7 G 5 44 External defects EN 4700-002 7 Visual 50 Cleanliness/inclusion content EN 4700-002 (micro cleanness) 1 See EN 2951. 7 Category 2 51 Macrostructure EN 4700-002 (grain flow) 1
30、See EN 2950. 61 Internal defects EN 4700-002 1 See EN 4050-4. 7 Class 4 95 Marking inspection EN 4700-002 96 Dimensional inspection EN 4700-002 98 Notes a Where a higher impact strength is required, the maximum Mn content may be increased to2 % subject to agreement between the customer and the suppl
31、ier.b For specific welding applications (e.g. high power beam), and after agreement betweenmanufacturer and purchaser, S+P should be equal or less than 0,023 %.c Air quenching may be used for De 20 mm. 99 Typical use BS EN 4631:2013 EN 4631:2013 (E) 8 100 Product qualification Qualification programm
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