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1、BRITISH STANDARD BS EN 10222-4:1999 Incorporating Amendment No. 1 Steel forgings for pressure purposes Part 4: Weldable fine-grain steels with high proof strength The European Standard EN 10222-4:1998, with the incorporation of amendment A1:2001, has the status of a British Standard ICS 77.140.30; 7
2、7.140.85 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 10222-4:1999 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 March 1999
3、BSI 8 October 2001 ISBN 0 580 32222 X National foreword This British Standard is the English language version of EN 10222-4:1998, including amendment A1:2001. Together with EN 10222-1, EN 10222-2, EN 10222-3 and EN 10222-5, it supersedes BS 1503:1989, which will be withdrawn when the five parts of E
4、N 10222 are published. The UK participation in its preparation was entrusted to Technical Committee ISE/73, Steel for pressure purposes, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or propos
5、als for change, and keep the UK interests informed; monitor related international and European developments and promulgate 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 interna
6、tional or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to includ
7、e all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. 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, pages i
8、 and ii, the EN title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.DateComments 133998 October 2001Correction of Table 1 BS EN 10222-4:1999 BSI 8 October 2001 i Conten
9、ts Page National forewordInside front cover Foreword2 Text of EN 10222-43 ii blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10222-4 November 1998 + A1 July 2001 ICS 77.140.30; 77.140.85 Descriptors: Iron and steel products, forgings, steels, weldable fine-grain steels, pressure equipment
10、, grades: quality, chemical composition, mechanical properties, heat treatment English version Steel forgings for pressure purposes Part 4: Weldable fine-grain steels with high proof strength (includes amendment A1:2001) Pices forges en acier pour appareils pression Partie 4: Aciers soudables grains
11、 fins avec limite dlasticit leve (inclut lamendement A1:2001) Schmiedestcke aus Stahl fr Druckbehlter Teil 4: Schweigeeignete Feinkornbausthle mit hoher Dehngrenze (enhlt nderung A1:2001) This European Standard was approved by CEN on 8 November 1998. Amendment A1:2000 was approved by CEN on 20 April
12、 2001. 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 obtain
13、ed 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 any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secret
14、ariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN Eur
15、opean Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10222-4:1998 + A1:2001
16、E EN 10222-4:1998 BSI 8 October 2001 2 Foreword This European Standard has been prepared by Technical Committee ECISS/TC 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
17、 by endorsement, at the latest by May 1999, and conflicting national standards shall be withdrawn at the latest by May 1999. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements o
18、f EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard. The titles of the other parts of this European Standard are: Part 1: General requirements for open die forgings; Part 2: Ferritic and martensitic steels with specified elev
19、ated temperature properties; Part 3: Nickel steels with specified low-temperature properties; Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to impl
20、ement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This amendment EN 10222-4:1998/A1:2001 to the EN
21、10222-4:1998 has been prepared by Technical Committee ECISS/TC 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 January 2002, and confli
22、cting national standards shall be withdrawn at the latest by January 2002. This amendment to the European Standard EN 10222-4:1998 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s)
23、. According to the CEN/CENELEC 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, Luxembourg, Netherlands, Norway, Portugal
24、, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Chemical composition3 4Heat treatment and mechanical properties3 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directive
25、s7 Table 1 Chemical composition, mechanical properties and heat treatment4 Table 2 Permissible deviations of the product analysis from specified values of the cast analysis5 Table 3 Minimum impact properties5 Table 4 Minimum 0,2 % proof strength (Rp0,2) values at elevated temperatures6 EN 10222-4:19
26、98 BSI 8 October 2001 3 1 Scope This part of this European Standard specifies the technical delivery conditions of the types of forgings for pressure purposes, made of weldable fine-grain steels with high proof strength. General information on technical delivery conditions is given in EN 10021. 2 No
27、rmative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions
28、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 applies. EN 10021, General technical delivery requirements for steel and iron products. EN 10022-1:1998, Steel
29、 forgings for pressure purposes Part 1: General requirements for open die forgings. 3 Chemical composition 3.1 Cast analysis The chemical composition (cast analysis), determined in accordance with EN 10222-1, shall conform to the requirements of Table 1 (see EN 10222-1:1998, 9.1). 3.2 Product analys
30、is The product analysis shall not deviate from the specified cast analysis (see Table 1) by more than the values specified in Table 2 (see EN 10222-1:1998, 9.2). 4 Heat treatment and mechanical properties When heat-treated in accordance with Table 1, the mechanical properties of the forgings, determ
31、ined in accordance with EN 10022-1, shall conform to the requirements of Table 1 and Table 3. Elevated temperature 0,2 % proof strength (Rp0,2) values shall conform to the requirements of Table 4. BS EN 10222-4:1999 4 BSI 8 October 2001 Table 1 Chemical composition, mechanical properties and heat tr
32、eatment Steel designation Chemical composition (cast analysis)a % Mechanical properties at room temperature Heat treatmentCarbon equivalent value NameNumberCSiMnPS Alb NCrCuMoNbNiVNb + V Thickness of the ruling section Yield strength Tensile strength Elongation after fracture SymbolfAustenitizing or
33、 solution temperature Cooling ing Tempering total tRcReHd Rm Ae max.max. max. min. max. max. max.max. max. max.max.max. max.mm N/mm2 min. % ? C? Cmax. min. N/mm2 1t,tr % P285NH/ 1.0477/tR ? ? 16285390 0,41 16 375235215197179160142117 P420NH1.8932tR?50363343 P420QH1.893650 375294275255226206176147 EN
34、 10222-4:1998 BSI 8 October 2001 7 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives This European Standard has been prepared under a mandate given to CEN by the European Commission and supports essential requirements of E
35、U Directive 97/23/EC. WARNING. Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this European Standard. The clauses of this European Standard are likely to support the essential requirements of section 4 of Annex 1, Essential safety requireme
36、nts, of the Pressure Equipment Directive 97/23/EC. Compliance with this European Standard provides one means of conforming with the specific essential requirements of the Directive concerned. BS EN 10222-4:1999 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the ind
37、ependent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that t
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