1、BRITISH STANDARD Steel rod, bars and wire for cold heading and cold extrusion - Part 3: Technical delivery conditions for case hardening steels The European Standard EN 10263-3:2001 has the status of a British Standard ICs 77.140.60; 77.140.65 BS EN 10263-3:2001 Incorporating Corrigendum No. 1 NO CO
2、PYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 10263-3:2001 13451 Corrigendum No. 1 O BSI 13 September 2001 National foreword 13 September Addition of supersession details 2001 This British Standard is the official English language version of EN 10263-3:2001. Together with B
3、S EN 10263-1:2001, BS EN 10263-2:2001 and BS EN 10263-4:2001 it supersedes BS 3111-1:1987, which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/71, Steel rods for wire drawing, which has the responsibility to: - - aid enquirers to understand the text;
4、present to the responsible European committee any enquiries on the interpretation, or proposals 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 obtain
5、ed on request to its secretary. Cross-references The British Standards which implement international 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” fac
6、ility 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 application. Compliance with a British Standard does not of itself confer immunity from legal oblig
7、ations. This British Standard, havine: been prepared under the - direction of the Engineering Sector Committee. was Summary Of pages This document comprises a front cover, an inside front cover, the EN title page, published under the authority of the Standards Committee and comes into effect on page
8、s 2 to15 and a back cover. The BSI copyright date displayed in this document indicates when the 15 August 2001 document was last issued. Amendments issued since publication Amd. No. IDate I Comments ISBN O 580 37622 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 102633 June 2001 ICs 77.140.6
9、0; 77.140.65 English version Steel rod, bars and wire for cold heading and cold extrusion - Part 3: Technical delivery conditions for case hardening steels Barres, fil machine et fil en acier pour transformation froid et extrusion froid - Partie 3: Conditions techniques de livraison des aciers de cm
10、entation Walzdraht, Stbe und Draht aus Kaltstauch- und Kalffliepresthlen - Teil 3: Technische Lieferbedingungen fr Einsatzsthle This European Standard was approved by CEN on 19 April 2001. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for gi
11、ving 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 application to the Management Centre or to any CEN member. This European Standard exists in three official versi
12、ons (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 has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cze
13、ch Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPkEN DE NORMALISATION EUROPISCHES KOMITEE FUR NORMUNG Management Centre: rue de
14、 Stassart, 36 6-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10263-3:2001 E Page 2 EN 10263-3:2001 1 Contents Page Foreword . 3 1 Scope . 4 2 Normative References 4 3 Terms and definitions 4 4 Classification
15、 and Designation . 4 4.1 4.2 Designation 4 5 Production process 4 5.2 Classification 4 5.1 Steelmaking process . 4 Deoxidation 4 6 Requirements 5 6.2 Chemical composition . 5 6.3 Mechanical properties . 5 6.4 Hardenability 5 6.5 Surface quality . 5 6.6 6.1 Delivery conditions 5 Supplementary or spec
16、ial requirements 5 O BSI 13 September 2001 Page 3 EN 10263-3:2001 Foreword This European Standard has been prepared by Technical Committee ECISSITC 15, Wire-rod - Qualities, dimensions, tolerances and specific tests, the Secretariat of which is held by UNI. This European Standard shall be given the
17、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 by December 2001. This European Standard EN 10263 is subdivided as follows: - Part 1: General technical del
18、ivery 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; - Part 4: Technical delivery conditions for steels for quenching and tempering; - Part 5: Technical delivery con
19、ditions for stainless steels. According to the 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, Luxembo
20、urg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. O BSI 13 September 2001 Page 4 EN 10263-312001 1 Scope 1 .I This part of EN 10263 is applicable to round rod, round bars and wire with a diameter up to and including 1 O0 mm, of non-alloy and alloy steel, intended
21、 for cold heading and cold extrusion and subsequent case hardening treatment. 1.2 This part of EN 10263 is complemented by EN 10263-1. 2 Normative References This European Standard incorporates by date or undated reference, provisions from other publications. These normative references are cited at
22、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 Standard only when incorporated in it by amendment or revision. For undated references the latest edition of t
23、he 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: General technical delivery conditions. 3 Terms and definitions For the purposes of this standard t
24、he definitions in EN 10263-1 :2001 and the following apply. 3.1 case hardening steel steel with a relatively low carbon content, which is intended for carburizing or carbonitriding and subsequent hardening. Such steels, after treatment, are characterized by a high hardness surface layer and a tough
25、core NOTE Other processes for case hardening include nitriding and nitrocarburizing 4 Classification and Designation 4.1 Classification All steels covered by this part of EN 10263-1:2001 are special steels according to EN 10020. Steel grades from ClOE2C to C20E2C as quoted in Table 2 are non-alloy s
26、teels 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. 5.2 Deoxidation All steels quoted in Table 2 shall be killed. O BSI 13 September 2001 Page 5 EN 10263-3:2001 6 Requirements 6.1 Delive
27、ry conditions The delivery conditions in which the products covered by this part of EN 10263 are normally supplied, the product forms and the applicable requirements are given in Table 1. 6.2 Chemical composition 6.2.1 Heat analysis The chemical composition shall be in accordance with the values spe
28、cified in Table 2 for the heat analysis. 6.2.2 Product analysis In cases where a product analysis is requested, the admissible deviations from the values specified for the heat analysis are indicated in Table 3. 6.3 Mechanical properties The mechanical properties of the products, to be determined by
29、 the tensile test or hardness test, shall be in accordance with the prescriptions given in Table 1, for that which concerns the delivery condition, and in Tables 4,5 and 6. 6.4 Hardenability 6.4.1 In the case of products ordered with standard requirements regarding hardenability, that is, when the s
30、teel names or numbers as quoted in Table2 are supplemented by the symbols “+H”, the hardness values obtained in the end quench test (Jominy test) (see Table 1 of EN 10263-1:2001) shall be in compliance with the values given in Table 7. 6.4.2 In the case of products ordered with restricted requiremen
31、ts 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 supplemented 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” denot
32、es 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 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 austenit
33、izing temperatures for the Jominy test are given in Tables 7 and 8. 6.5 Surface quality 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 ord
34、er are described in annex B of EN 10263-1 2001. O BSI 13 September 2001 u) C .c, f e e n n .- a U al a o P a CI E a v) .- - E s U o 3 CI g cn“ E O P C .- .- U o 2 .- : d I I!? - .- al - n 3 m C C a a f c Y C II II x 1% Z W a h u) u) z r 0 s c, l,oo I 1,70 20,005 O Mn l,oo I 1,40 P 20,025 S 20,040 2
35、0,30 0,30 I 0,50 .- - k + - a a tj .- O O N 5 n n al .O m c al 0 c U al o u) c, .- - .- E c L c, .- L 5 5 c! u) al U O al al u) - ci 8 ic ci u) .- E .- - I cc Q1 I- TI - O 91% o z W BS EN 10263-3200 1 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent
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