1、BRITISH STANDARD BS EN 10263-4:2001 Incorporating Corrigenda Nos. 1 and 2 Steel rod, bars and wire for cold heading and cold extrusion Part 4: Technical delivery conditions for steels for quenching and tempering The European Standard EN 10263-4:2001 has the status of a British Standard ICS 77.140.60
2、; 77.140.65 BS EN 10263-4:2001 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 August 2001 BSI 24 January 2003 ISBN 0 580 37623 0 National foreword This Briti
3、sh Standard is the official English language version of EN 10263-4:2001, including Corrigendum July 2002. Together with BS EN 10263-1:2001, BS EN 10263-2:2001 and BS EN 10263-3:2001 it supersedes BS 3111-1:1987, which is withdrawn. The UK participation in its preparation was entrusted to Technical C
4、ommittee ISE/71, Steel rods for wire drawing, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document
5、 may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Use
6、rs are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the
7、 UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright date displayed in t
8、his document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 13452 Corrigendum No. 1 13 September 2001 Addition of supersession details 14045 Corrigendum No. 2 24 January 2003 Changes to Table 8 for steel grade 41CrS4 (+HL)EUROPEAN STANDARD NOR
9、ME EUROPENNE EUROPISCHE NORM EN 10263-4 June 2001 ICS 77.140.60; 77.140.65 Incorporating corrigendum July 2002 English version Steel rod, bars and wire for cold heading and cold extrusion Part 4: Technical delivery conditions for steels for quenching and tempering Barres, fil machine et fils en acie
10、r pour transformation froid et extrusion froid Partie 4: Conditions techniques de livraison des aciers pour trempe et revenu Walzdraht, Stbe und Draht aus Kaltstauch- und Kaltfliepresthlen Teil 4: Technische Lieferbedingungen fr Vergtungssthle This European Standard was approved by CEN on 19 April 2
11、001. 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 obtained
12、 on application to the 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 Management Centre
13、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. EUROPEAN COMM
14、ITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10263-4:2001 EPage 2 EN 10263-4:200
15、1 BSI 24 January 2003 Contents Page Foreword 3 1 Scope4 2 Normative references 4 3 Terms and definitions4 4 Classification and designation .4 4.1 Classification4 4.2 Designation4 5 Production process .4 5.1 Steelmaking process4 5.2 Deoxidation5 6 Requirements.5 6.1 Delivery conditions.5 6.2 Chemical
16、 composition5 6.3 Mechanical properties5 6.4 Hardenability5 6.5 Surface requirements.6 6.6 Supplementary or special requirements.6Page 3 EN 10263-4:2001 BSI 24 January 2003 Foreword This European Standard has been prepared by Technical Committee ECISS/TC 15, Wire-rod - Qualities, dimensions, toleran
17、ces and specific tests, the Secretariat of which is held by UNI. 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 December 2001, and conflicting national standards shall be withdrawn at the latest
18、by December 2001. This European Standard EN 10263 is subdivided as follows: - Part 1: General technical delivery conditions; - Part 2: Technical delivery conditions for steels not intended for heat treatment after cold working; - Part 3: Technical delivery conditions for case hardening steels; - Par
19、t 4: Technical delivery conditions for steels for quenching and tempering; - Part 5: Technical delivery conditions for stainless steels. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: A
20、ustria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Page 4 EN 10263-4:2001 BSI 24 January 2003 1 Scope 1.1 This part of EN 10263 is applicable to round rod an
21、d round bars and wire with a diameter up to and including 100 mm, of non-alloy and alloy steel, intended for cold heading and cold extrusion and subsequent quenching and tempering. 1.2 This part of EN 10263 is complemented by EN 10263-1. 2 Normative references This European Standard incorporates by
22、date 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 date references, subsequent amendments to or revisions of, any of these publications apply to this European Standar
23、d only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 10020 Definitions and classification of grades of steel. EN 10263-1 Steel rod, bars and wire for cold heading and cold extrusion Part 1
24、: General technical delivery conditions. 3 Terms and definitions For the purposes of this standard the definitions in EN 10263-1 and the following apply. 3.1 quenched and tempered steels for the purpose of this European Standard quenched and tempered steels are engineering steels which, because of t
25、heir chemical composition, are suitable for hardening and in the quenched and tempered condition have good toughness at a given tensile strength 4 Classification and designation 4.1 Classification All steels covered by this part of EN 10263 are special steels according to EN 10020. Steel grades from
26、 C35EC to C45RC as quoted in Table 2 are non-alloy steels and all others are alloy steels according to EN 10020. 4.2 Designation See EN 10263-1:2001. 5 Production process 5.1 Steelmaking process See EN 10263-1:2001.Page 5 EN 10263-4:2001 BSI 24 January 2003 5.2 Deoxidation All steels shall be killed
27、 with aluminium and/or silicon. Aluminium and/or silicon may be replaced by another element having a similar effect. 6 Requirements 6.1 Delivery conditions The delivery conditions in which the products covered by this part of EN 10263 are normally supplied, the product forms and the applicable requi
28、rements, are given in Table 1. 6.2 Chemical composition 6.2.1 Heat analysis The chemical composition for the heat analysis shall be in accordance with the values specified in Table 2 and Table 3. 6.2.2 Product analysis In cases where a product analysis is requested, the admissible deviations from th
29、e values specified for the cast/heat analysis are indicated in Table 4. 6.3 Mechanical properties The mechanical properties of the products, to be determined by the tensile test, shall be in accordance with the prescriptions given in Table 1 for that which concerns the delivery condition, and in Tab
30、les 5 and 6. 6.4 Hardenability 6.4.1 In the case of products ordered with standard requirements regarding hardenability, that is, when the steel names or numbers as quoted in Tables 2 and 3 are supplemented by the symbol “+H”, the hardness values obtained in the end quench test (Jominy test) (see Ta
31、ble 1 of EN 10263-1:2001) shall be in compliance with the values given in Tables 7 and 9. 6.4.2 In the case of products ordered with restricted requirements regarding the scatter bands of the hardness values obtained by the Jominy test, that is when the steel name or number as quoted in Table 2 is s
32、upplemented by the symbol “+HH” or “+HL”, the above hardness values shall be in compliance with the values given in Table 8. NOTE 1 The symbol “+HH” denotes that the upper limit of the scatter band coincides with the upper limit for the corresponding steel “+H”. NOTE 2 The symbol “+HL” denotes that
33、the lower limit of the scatter band coincides with the lower limit for the corresponding steel “+H”. NOTE 3 See EN 10263-1:2001, 7.7.4. 6.4.3 The austenitizing temperatures for the Jominy test are given in Tables 7, 8 and 9.Page 6 EN 10263-4:2001 BSI 24 January 2003 6.4.4 Core hardening In the case
34、of products ordered with requirements regarding core hardening, that is, when the steel name or number, as quoted in Tables 2 and 3, is supplemented by the symbol “+CH”, the core hardening temperature, the hardness values and the corresponding maximum diameters shall be in compliance with the values
35、 given in Table 10. 6.5 Surface requirements For any particular surface requirement to be agreed at the time of ordering see EN 10263-1:2001, 7.10. 6.6 Supplementary or special requirements Other requirements that can be agreed at the time of enquiry and order are described in EN 10263-1:2001, annex
36、 B.Page 7 EN 10263-4:2001 BSI 24 January 2003 Table 1 Summary of delivery conditions, product forms and applicable requirements products form a Applicable requirements in cases where the steel concerned has been ordered with reference to the steel names indicated in: Delivery condition Symbols rod b
37、ar wire Table 2 or 3 or 5 or 6 Table 7 or 8 or 9 Table 10 Table 2,4,5,6,7,8 9 or 10 as hot rolled or peeled +U or +U+PE XX +cold drawn +U+C XX +cold drawn +spheroidized +U+C+AC XX Untreated +cold drawn +spheroidized +skin passed +U+C+AC+LC XX as treated +AC XX +peeled +AC+PE XX +cold drawn +AC+C XX
38、+cold drawn +spheroidized +AC+C+AC XX Spheroidized +cold drawn +spheroidized +skin passed +AC+C+AC+LC XX Chemical composition as specified in Tables 2 or 3 and 4 Mechanical properties as specified in Table 5 or 6 Chemical composition as specified in Tables 2 or 3 and 4 Mechanical properties as speci
39、fied in Table 5 or 6 Values for hardenability according to Tables 7 or 8 or 9 Chemical composition as specified in Tables 2 or 3 and 4 Mechanical properties as specified in Table 5 or 6 Minimum core hardness and maximum diameter according to Table 10 Supplementary or special requirements as specifie
40、d in annex B of EN 10263-1: 2001 b other Other delivery conditions can be agreed at the time of orderingaX = applicable. = not applicable.bIf agreed at the time of ordering.Page 8 EN 10263-4:2001 BSI 24 January 2003 Table 2 Steel grades and chemical composition for steel grades without boron Heat an
41、alysis, % by mass a b Steel grade Steel name Steel number C c Si max d Mn P max SC rM oN i Cu max C35EC C35RC C45EC C45RC 1.1172 1.1060 1.1192 1.1061 0,32/0,39 0.32/0,39 0,42/0,50 0,42/0,50 0,30 0,30 0,30 0,30 0,50/0,80 0,50/0,80 0,50/0,80 0,50/0,80 0,025 0,025 0,025 0,025 0,025 max 0.020/0,035 0,02
42、5 max 0.020/0,035 0,25 0,25 0,25 0,25 37Mo2 1.5418 0,35/0,40 0,30 0,60/0,90 0,025 0,025 max 0,20/0,30 0,25 38Cr2 46Cr2 34Cr4 37Cr4 41Cr4 41CrS4 1.7003 1.7006 1.7033 1.7034 1.7035 1.7039 0,35/0,42 0,42/0,50 0,30/0,37 0,34/0,41 0,38/0,45 0,38/0,45 0,30 0,30 0,30 0,30 0,30 0,30 0,50/0,80 0,50/0,80 0,60
43、/0,90 0,60/0,90 0,60/0,90 0,60/0,90 0,025 0,025 0,025 0,025 0,025 0,025 0,025 max 0,025 max 0,025 max 0,025 max 0,025 max 0.020/0,040 0,40/0,60 0,40/0,60 0,90/1,20 0,90/1,20 0,90/1,20 0,90/1,20 0,25 0,25 0,25 0,25 0,25 0,25 25CrMo4 25CrMoS4 34CrMo4 37CrMo4 42CrMo4 42CrMoS4 1.7218 1.7213 1.7220 1.720
44、2 1.7225 1.7227 0,22/0,29 0,22/0,29 0,30/0,37 0,35/0,40 0,38/0,45 0,38/0,45 0,30 0,30 0,30 0,30 0,30 0,30 0,60/0,90 0,60/0,90 0,60/0,90 0,60/0,90 0,60/0,90 0,60/0,90 0,025 0,025 0,025 0,025 0,025 0,025 0,025 max 0.020/0,040 0,025 max 0,025 max 0,025 max 0.020/0,040 0,90/1,20 0,90/1,20 0,90/1,20 0,90
45、/1,20 0,90/1,20 0,90/1,20 0,15/0,30 0,15/0,30 0,15/0,30 0,15/0,30 0,15/0,30 0,15/0,30 0,25 0,25 0,25 0,25 0,25 0,25 34CrNiMo6 41NiCrMo7-3-2 1.6582 1.6563 0,30/0,38 0.38/0,44 0,30 0,30 0,50/0,80 0,60/0,90 0,025 0,025 0,025 max 0,025 max 1,30/1,70 0,70/0,90 0,15/0,30 0,15/0,30 1,30/1,70 1,65/2,00 0,25
46、 0,25 aElements not quoted in this table should not be intentionally added to the steel without the agreement of the purchaser, except those intended for finishing the heat. All reasonable precaution shall be taken in order to prevent the addition of elements from scrap or other material used in the
47、 production process. However, residual elements may be present provided that they do not affect the hardenability, mechanical properties and applicability. bIn the case of steels with hardenability requirements (see Tables 7 to 9) minor deviation from the specified limits are permitted (with the exc
48、eption of sulfur and phosphorus), provided that they do not exceed 0,01 % for carbon and the values indicated in Table 4 for the other elements. cA carbon range of 0,04 % (i.e. 0,33 0,37 %) may be agreed at the time of enquiry and order. dLower silicon contents may be agreed at the time of ordering,
49、 in which case due consideration should be given to the effects that could result from what concerns the specified properties such as, for example, hardenability.Page 9 EN 10263-4:2001 BSI 24 January 2003 Table 3 Steel grades and chemical composition for steels grades containing boron Heat analysis, % by mass a b Steel grade Steel name Steel number CS i c Mn P max S max Cr d Mo Cu max B 17B2 1.5502 0,15/0,20 0,30 0,60/0,90 0,025 0,0
