1、BS EN 2542:2008ICS 49.025.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Steel FE-PL1502(25CrMo4) Annealed Bar and wire De 40 mm Forprevailing torque nutsThis British Standardwas published under theauthority of the StandardsPolicy and Strateg
2、yCommittee on 31 March2009 BSI 2009ISBN 978 0 580 65821 1Amendments/corrigenda issued since publicationDate CommentsBS EN 2542:2008National forewordThis British Standard is the UK implementation of EN 2542:2008.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/61/-/15,
3、Metallic materials for aerospace purposes.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a Briti
4、sh Standard cannot confer immunityfrom legal obligations.BS EN 2542:2008EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2542 November 2008 ICS 49.025.10 English Version Aerospace series - Steel FE-PL1502 (25CrMo4) - Annealed - Bar and wire - De 40 mm - For prevailing torque nuts Srie arospatial
5、e - Acier FE-PL1502 (25CrMo4) - Recuit -Barres et fils - De 40 mm - Pour crous freinage interne par dformation Luft- und Raumfahrt - Stahl FE-PL1502 (25CrMo4) - Geglht - Stangen und Drhte - De 40 mm - Fr klemmende Sicherungsmuttern This European Standard was approved by CEN on 24 August 2008. CEN me
6、mbers 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 obtained on applica
7、tion to the CEN 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 CEN Management Centre has
8、 the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
9、tugal, 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 2008 CEN All rights of exploitation in any form and by any me
10、ans reserved worldwide for CEN national Members. Ref. No. EN 2542:2008: EBS EN 2542:2008EN 2542:2008 (E) 2 Foreword This document (EN 2542:2008) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in acco
11、rdance 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, either by publication o
12、f an identical text or by endorsement, at the latest by May 2009, and conflicting national standards shall be withdrawn at the latest by May 2009. 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 hel
13、d 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, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland
14、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 2542:2008EN 2542:2008 (E) 3 Introduction This standard is part of the series
15、 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 the requirements relating to: Steel FE-PL1502 (25CrMo4) Annealed Bar and wire
16、De 40 mm For prevailing torque nuts 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 documen
17、t (including any amendments) applies. EN 2600, Aerospace series Designation of metallic semi-finished products Rules. 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 materi
18、als Rules for drafting and presentation of material standards Part 5: Specific rules for steels. 1) EN 4700-2, Aerospace series Steel and heat resisting alloys Wrought products Technical specification Part 2: Bar and section. 1) EN 9133, Aerospace series Quality management systems Qualification proc
19、edure for aerospace standard parts. 1) Published as ASD Prestandard at the date of publication of this standard. BS EN 2542:2008EN 2542:2008 (E) 4 1 Material designation Steel FE-PL1502 (25CrMo4) Element C Si Mn P S Cr Mo Ni Fe 2 min. 0,22 0,10 0,50 0,90 0,15 Chemical composition % max. 0,29 0,35 0,
20、80 0,020 0,015 1,20 0,25 0,30 Base 3 Method of melting Air melted 4.1 Form Bar and wire 4.2 Method of production 4.3 Limit dimension(s) mm De 40 5 Technical specification EN 4700-2 Delivery condition Annealed 6.1 Heat treatment 6.2 Delivery condition code A Use condition Delivery condition 7 Heat tr
21、eatment Characteristics 8.1 Test sample(s) 8.2 Test piece(s) 8.3 Heat treatment Annealed Reference on a washer a 2 mm (see line 29) 9 Dimensions concerned mm 40 10 Thickness of cladding on each face % 11 Direction of test piece 12 Temperature C Ambient13 Proof stress Rp0,2MPa* 14 Strength RmMPa* 15
22、Elongation A % 16 T Reduction of area Z % 17 Hardness HRB 82 40 HRC 43 390 HV5 430 18 Shear strength RcMPa* 19 Bending k 20 Impact strength 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) BS EN 2542:2008EN 254
23、2:2008 (E) 5 29 Step quenched in a salt bath + 850 C 860 C a salt bath quenched 365C / AC or other equivalent heat treatment 97 Designation The rules governing the designation of semi-finished products are indicated in standard EN 2600. When the codified designation is used, the identification code
24、shall be as follows: EN2542 U XX -Material standard number Letter code (see 6.2) Appropriate dimensional standard code (see 5.3) Data concerning dimension (see EN 2600) 98 Notes * 1 MPa = 1 N/mm2. a Depth of decarburization admissible e 0,2 mm. Carburization or total decarburization is not permitted
25、. 99 Typical use Low alloy steel for nuts BS EN 2542:2008EN 2542:2008 (E) 6 100 Product qualification See EN 9133. Qualification programme to be agreed between manufacturer and purchaser. BS EN 2542:2008This page has been intentionally left blank BS EN2542:2008BSI GroupHeadquarters 389Chiswick High
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