1、STD-BSI ES EN 10250-3-ENGL 2000 W Lh24bb9 0829074 204 m BRITISH STANDARD Open die steel forgings for general engineering purposes - Part 3: Alloy special steels The European Standard EN 102503:1999 has the status of a British Standard ICs 77.140.85 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMWiX
2、D BY COPYBIGT LAW - STDmBSI 8s EN L0250-3-ENGL 2000 D Lb2LLbb9 0829075 L40 W BS EN 10260-3:2000 Amd. No. This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 Febru
3、ary 2000 Date Comments O BSI 02-2000 ISBN O 580 35393 1 National foreword This British Standard is the official English language version of EN 1025031999. This British Standard supersedes BS 46701971 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE
4、Bl, Wrought steels, which has the responsibility to: - aid enquire- to understand the tea - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretaiion, or proposals for change, and keep the UK interests i
5、nformed them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement inteniatonal or European publications referred to in this document may be found in the BSI Standards Catalogue under the s
6、ection entitled “Internationai Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applicati
7、on. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this documen
8、t indicat when the document waslastissued. STDmBSI BS EN LOSSO-3-ENGL 2000 Lb24b69 0829076 087 EUROPEAN STANDARD NORME EUROPENNE EUROPhSCHE NORM EN 10250-3 October 1999 ICs 77.140.20; 77.140.85 English version Open die steel forgings for general engineering purposes - Part 3: Alloy special steels Pi
9、ces forges en acier pour usage gnral - Partie 3: Aciers spciaux allis Freiformschmiedestcke aus Stahl fr allgemeine Verwendung - Teil 3: Legierte Edelstahle This European Standard was approved by CEN on 9 September 1999 CEN members are bound to comply with the CENICENELEC Internal Regulations which
10、stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-todate lists and bibliographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standar
11、d exists in three official versions (English, French, German). A version in any other language made by traislation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as he official versions. CEN members are the national standard
12、s bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMiITEE FOR STANDARDIZATION EUROPISCHES KOMITEE FOR NORMUNG COMITE EUROPEEN DE NORMAL
13、ISATION Centrai Secretariat: rue de Stassart, 36 8-1050 Brussels O 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10250-31999 E STD*BSI BS EN L0250-3-ENGL ZOO0 Page 2 EN 10250-3:1999 Contents Foreword 1 Scope 2 Normative refe
14、rences 3 Chemical composition 4 Heat treatment 5 Mechanical properties Annex A (informative) Heat treatment rn Lb2ribb 0829077 T13 rn Page 3 4 4 4 5 5 12 OBSI 02-2000 STDsBSI BS EN L0250-3-ENGL 2000 H Lb24bb9 0829078 95T W Page 3 EN 10250-3: 1999 Foreword This European Standard has been prepared by
15、Technical Committee ECISSITC 28, Steel forgings, the Secretariat of which is held by BSI. 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 April 2000, and conflicting national standards shall be wi
16、thdrawn at the latest by April 2000. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standard is considered to be a supporting standard to those application and product standards which in themselv
17、es support an essential safety requirement of a New Approach Directive and which make reference to this European Standard. The titles of the other parts of this European Standard are: Part 1: General requirements Part 2: Non-alloy quality and special steels Part 4: Stainless steels According to the
18、CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Swed
19、en, Switzerland and the United Kingdom. OBSI 02-2000 STD-BSI BS EN L0250-3-fNGL 2000 lb24bb9 0829079 896 - Page 4 EN 10250-3:1999 1 Scope This part of this European Standard specifies the technical delivery requirements for open die forgings, forged bars and products pre-forged and finished in ring
20、rolling mills, manufactured f-om alloy special steel and supplied in the quenched and tempered condition. NOTE: The majority of steels listed in this part of EN 10250 are identical to steels specified in EN 10083-1 and more extensive information on hardenability and technological properties is given
21、 in that European Standard. General information on technical delivery conditions is given in EN 1002 1. 2 Normative references This part of EN 10250 incorporates by dated or undated reference, provisions fiom other publications. These normative references are cited at the appropriate places in the t
22、ext and the publications are listed hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to ap
23、plies. EN 1002 1 General technical delivery requirements for iron and steel products EN 10083- 1 Quenched and tempered steels - Part 1 : Technical delivery conditions for special steels EN 10250- 1 Open die steel forgings for general engineering purposes - Part 1 : General requirements 3 Chemical co
24、mposition 3.1 Cast analysis The chemical composition of the steel shall be determined by cast analysis and shall conform to the analysis given in Table 1 (see A.7 and A.8, of EN 10250-1). Measures should be taken to prevent the addition fiom the scrap, or other material used in the manufacture of th
25、e steels, of such elements which affect the hardenability, mechanical properties and applicability of the steel. 3.2 Product analysis The product analysis shall not deviate from the specified cast analysis (see Table 1) by more than the values specified in Table 2 (see 9.2 of EN 10250-1). OBSI 02-20
26、00 STD.BSI BS EN 10250-3-ENGL 2000 = Lb4bb9 0829080 508 Page 5 EN 10250-3: 1999 4 Heat treatment Heat treatment details are not given in Table Al for guidance. 5 Mechanical properties The mechanical properties determined on test pieces selected, prepared and tested in accordance with clauses 11 and
27、12 of EN 10250- 1 shall conform to the property requirements given in Table 3. OBSI 02-2000 h -e 3 an 8 E 8 u E o 3 I 4) W e eu .er ;3 9 - - I I I O c1 in i( 0- - slsls q VI VI VI 3 x s IA x O O0 O I, *! - - I- T O * I, 2 O0 * i( ? 3 7 N O STDaBSI BS EN -ENCL 7 O 3 Y 3 3- I $ VI VI i I - d i( O O 4
28、2 zi I in0 212 O v, c, 3 0- O Y I - 3 3“ 3 O 3 3 c, h - m m 8 8 - v, M - 4 s ? 5 3 - O 2 O 2 + in m 8 v cc C C - VI Iir mr 81; O O O v, *“ 4 M O“ - 30 313 O x C d C I, VI - 3 2 O c., neo 2-12 r c C C 4- o 4 M E: .3 tE Cu O O O O N A O - o m o STDOBSI BS EN 10250-3-ENGL 2000 M Lb24bb9 0829083 2L7 M P
29、age 8 EN 10250-31999 Element Table 2: Permissible deviations between the product analysis and the limiting values given in Table 1 for the cast analysis Permissible maximum content in the cast analysis Sulphur Chromium % 50,045 52,oo I l,oo Molybdenum I 1,00 I 1,50 2,OO I 3,50 I0,30 Phosphorus I 0,0
30、35 I 0,30 I 1,lO Nickel I2,OO 2,OO I 4,lO Vanadium I0,25 Permissible deviation % f 0,02 + 0,03 f 0,04 f 0,06 + 0,005 + 0,005 f 0,05 f 0,12 f 0,03 f 0,06 f 0,05 f 0,07 f 0,02 I) For steel 40 Cr Mo V13 9, the permissible deviation is f 0,03 % OBSI 02-2000 STD BS: EN 10250-3-ENGL 2000 m Lb24bb9 0829084
31、 153 m STD.BS1 BS EN 10250-3-ENGL 2000 W lb24bb9 0829085 U9T D 3 a 8 W e a f E .I 8 z L e 3 a m % o 5 5 1 u- 9) e .LI $ 9) o 8, c? o LI .LI e Q E rc, g b 3 Y 5: OCu -0 a- 22 aw e E h $ E .e S 7 h -b c .d ES I c 41 E c, e ._ ES I- t Z 9 E E O O in VI Id x s - G 9 5 a 8 3 8 x a I rn a .d a G d- O u w-
32、 o m O E u ri- O in O E V 2 rn a o Y rn c s L O STD-BSI BS EN L0250-3-ENGL 2000 Lb24bb9 0829086 T2b h - E boo3233 II Eo: III O O O N Page 12 EN 10250-31999 Steel designation Name Number 38Cr2 1.7003 34Cr4 1.7033 34CrMo4 1.7220 46Cr2 1.7006 37Cr4 1.7034 42CrMo4 1.7225 5OCrMo4 1.7228 41Cr4 1.7035 25Cr
33、Mo4 1.7218 36CrNiMo4 1.651 1 34CrNiMo6 1.6582 3OCrNiMo8 1.6580 3NiCrMo16 1.6773 5 1 CrV4 1.8159 33NiCrMoV14-5 1.6956 4OCrMoV13-9 1.8523 18CrMo4 1.7243 2OMnMoNi4-5 1.6311 3OCrMoV9 1.7707 32CrMo12 1.7361 28NiCrMoV8 -5 1.6932 *) Quenching from hardening may be Annex A (informative) Quenching temperatur
34、e) Tempering temperature “C “C 830 to 870 830 to 870 830 to 870 820 to 860 825 to 865 820 to 860 820 to 860 820 to 860 840 to 880 820 to 850 830 to 860 830 to 860 865 to 885 820 to 860 820 to 890 920 to 970 850 to 880 870 to 940 840 to 870 890 to 940 830 to 870 540 to 680 540 to 680 540 to 680 540 t
35、o 680 540 to 680 540 to 680 540 to 680 540 to 680 540 to 680 540 to 680 540 to 680 540 to 680 550 to 650 540 to 680 550 to 650 550 to 720 595 to 700 630 to 680 540 to 680 550 to 740 550 to 850 carried out in oil, water, or water based solutions. Caution QBSI 02-2000 BS EN 10250-3:2000 BSI 389 Chiswi
36、ck High Road London w4 4AL . - BSI - British Standards Institution BSI is the independent national body responsible for preparing British standards. It presents the UK view on standards in Europe and at the intedonai level. It is incorporated by Royal Charter. Revisions British Standards are updated
37、 by amendment or revision Users of British Stan& should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quaiity of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British standar
38、d would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel 020 8996 9OOO. Fax: O20 89% 7m. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest edition
39、s of standards. Buying standards Orders for aii BSI, internatiord and foreign stankds publications should be adressed to Customer Services. Tel O20 8996 9001. Fax: 020 8996 7001. In response to orders for intedonal standards, it is BSI policy to supply the BSI implementation of those that have been
40、published as British standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also availa
41、ble which give details on all its products and services. Contact the Information Centre. Tel O20 8996 7111. Fax 020 8996 7048. Subscribing members of BSI are kept up to date with stan- developments and receive substantial discounts on the purchase price of standards. For details of these and other b
42、enefits contact Membership Admhktmh on Tel 020 8996 7002. Fax: O20 8996 7001. Copyright Copyright subsists in aii BSI publications. BSI also holds the copyright, in the UK, of the publications of the intrnational standardization bodies. Except as permitted under the Copyright, Designs and Patents Ac
43、t 1988 no exhact may be reproduced, stored in a retrieval system or transmitted in any form or by any means - electronic, photocopying, recording or otherwise - without prior written permission from BSI. This does not preclude the free use, in the course of implementing the sandard, of necessary det
44、ails such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the tem may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel O20 8996 7070.
