1、BSI Standards PublicationBS EN 4627:2014Aerospace series Steel X4CrNiMo16-5-1 (1.4418) Air melted Hardened and tempered Forgings De 200 mm 1 150 MPa Rm 1 300 MPaBS EN 4627:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4627:2014. Itsupersedes BS EN 4627:20
2、07 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/61/-/15, Steels for Aerospace Purposes.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessary
3、provisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 84527 7ICS 49.025.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publi
4、shed under the authority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedBS EN 4627:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4627 April 2014 ICS 49.025.10 Supersedes EN 4627:2007English Version Aerospace series - Steel
5、 X4CrNiMo16-5-1 (1.4418) - Air melted -Hardened and tempered - Forgings - De 200 mm - 1 150 MPa Rm 1 300 MPa Srie arospatiale - Acier X4CrNiMo16-5-1 (1.4418) - labor lair - Tremp et revenu - Pices forges - De 200 mm - 1 150 MPa Rm 1 300 MPa Luft und Raumfahrt - Stahl X4CrNiMo16-5-1 (1.4418) - Lufter
6、schmolzen - Gehrtet- und angelassen - Schmiedestcke - De 200 mm - 1 150 MPa Rm 1 300 MPa This European Standard was approved by CEN on 27 December 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the stat
7、us of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Ge
8、rman). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croat
9、ia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Un
10、ited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. E
11、N 4627:2014 EBS EN 4627:2014EN 4627:2014 (E) 2 Contents Page Foreword . 3 Introduction 4 1 Scope 4 2 Normative references 4 BS EN 4627:2014EN 4627:2014 (E) 3 Foreword This document (EN 4627:2014) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-S
12、TAN). 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 to CEN. This European Standard shall be given the sta
13、tus of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2014, and conflicting national standards shall be withdrawn at the latest by October 2014. Attention is drawn to the possibility that some of the elements of this document may be the su
14、bject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document will supersede EN 4627:2007. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
15、 this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slo
16、vakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4627:2014EN 4627:2014 (E) 4 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
17、has been prepared in accordance with EN 4500-005. 1 Scope This standard specifies the requirements relating to: Steel X4CrNiMo16-5-1 (1.4418) Air melted Hardened and tempered Forgings De 200 mm 1 150 MPa Rm 1 300 MPa for aerospace applications. NOTE Other common designation: AIR: Z 8 CND 17-04. 2 No
18、rmative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment
19、s) applies. EN 2950, Aerospace series - Test method - Wrought heat resisting alloys Semi-finished products and parts - Conditions for macrographic and micrographic examination - Atlas of structures and defects EN 2951, Aerospace series Metallic materials Test method Micrographic determination of con
20、tent of non-metallic inclusions 1)EN 4050-4, Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 4: Acceptance criteria EN 4258, Aerospace series - Metallic materials - General organization of standardization - Links betwee
21、n types of EN standards and their use EN 4500-005, Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 005: Specific rules for steels EN 4629, Aerospace series - Steel X4CrNiMo16-5-1 (1.4418) - Air melted - Softened - Forging stock - De 300 mm EN
22、4700-006, Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 006: Pre-production and production forgings EN ISO 643, Steels - Micrographic determination of the apparent grain size (ISO 643:2012) AMS 2315, Determination of delta ferrite content 2)1)
23、Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org). 2) Published as SAE National (US) Society of Automotive Engineers (http:/www.sae.org/). BS EN 4627:2014EN 4627:2014 (E) 5 1 Material designation Steel X4CrNiMo16-5-1 (1.4418) 2 Chemical Element C Si Mn
24、aP bS bN Cr Mo Ni Fe composition min. 0,020 15,00 0,80 4,00 Base % max. 0,06 0,70 1,50 0,030 0,005 17,00 1,50 6,00 3 Method of melting Air melted 4.1 Form Forgings 4.2 Method of production Forged from forging stock EN 4629 4.3 Limit dimension(s) mm De 200 5 Technical specification EN 4700-006 6.1 De
25、livery condition Annealed Hardened + Tempered Heat treatment 1 010 C 1 060 C / OQ or WQ c+ Tempered 375 C 405 C d6.2 Delivery condition code A U 7 Use condition Hardened and tempered Delivery condition Heat treatment Delivery condition + 1 010 C 1 060 C / OQ or WQ b+ Tempered 375 C 405 C Characteris
26、tics 8.1 Test sample(s) EN 4700-006 Procedure A, B, C or D EN 4700-006 Procedure A or B (separately forged) EN 4700-006 Procedure C (integral) and Procedure D (machined from forging) 8.2 Test piece(s) See EN 4700-006. See EN 4700-006. 8.3 Heat treatment Annealed Use condition Use condition 9 Dimensi
27、ons concerned mm D 200 25 a or D 30 D 200 10 Thickness of cladding on each % 11 Direction of test piece L L LT 12 T Temperature C Ambient Ambient Ambient Ambient 13 Proof stress Rp0,2 MPa 900 900 14 Strength Rm MPa 1 150 Rm 1 300 1 150 Rm 1 300 15 Elongation A % 14 14 8 16 Reduction of area Z % 17 H
28、ardness HBW 293 341 HBW 401 341 HBW 401 18 Shear strength Rc MPa 19 Bending k 20 Impact strength KV J 100 J at 20 C Notch direction T 60 J at 30 C Notch direction T 100 J at 20 C Notch direction T 60 J at 30 C Notch direction T 50 J at 20 C Notch direction L 20 J at 30 C Notch direction L 21 C Tempe
29、rature C 22 Time h 23 Stress aMPa 24 Elongation a % 25 Rupture stress RMPa 26 Elongation at A % BS EN 4627:2014EN 4627:2014 (E) 6 27 Notes (see line 98) a, b, c, d 30 Microstructure EN 4700-006 1 See AMS 2315.7 The ferrite content shall not exceed 5 %. 34 Grain size EN 4700-006 1 See EN ISO 643. 7 G
30、 5 44 External defects (visual) EN 4700-006 50 Cleanliness/inclusion content EN 4700-006 (micro cleanness) 1 See EN 2951. 7 Category 2 51 Macrostructure EN 4700-006 (grain flow) 1 See EN 2950. 61 Internal defects EN 4700-006 1 See EN 4050-4. 7 Class 4 95 Marking inspection EN 4700-006 96 Dimensional
31、 inspection EN 4700-006 98 Notes aWhere a more stringent impact strength is required (e.g. 20 J at 40 C direction L and 50 J at 40 C direction T), the maximum Mn content may be increased to 2 % subject to agreement between the customer and the supplier. bFor specific welding applications (e.g. high
32、power beam), and after agreement between manufacturer and purchaser, S+P should be equal or less than 0,023 %. cAir quenching may be used for De 20 mm. dThe temperature range may be increased subject to agreement between the customer and the supplier. 99 Typical use BS EN 4627:2014EN 4627:2014 (E) 7
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