BS-EN-10084-2008.pdf
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1、BRITISH STANDARD BS EN 10084:2008 Case hardening steels Technical delivery conditions ICS 77.140.10 ? -,-,- BS EN 10084:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2008 BSI 2008 ISBN 978 0 580 56375 1 National foreword This B
2、ritish Standard is the UK implementation of EN 10084:2008. It supersedes BS EN 10084:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/31, Wrought steels. A list of organizations represented on this committee can be obtained on request to its s
3、ecretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments EUROPEAN
4、 STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10084 April 2008 ICS 77.140.10Supersedes EN 10084:1998 English Version Case hardening steels - Technical delivery conditions Aciers pour cmentation - Conditions techniques de livraison Einsatzsthle - Technische Lieferbedingungen This European Standard was
5、 approved by CEN on 29 February 2008. 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 n
6、ational standards may be obtained on application 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 a
7、nd notified to the CEN Management Centre has 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, Luxembo
8、urg, Malta, Netherlands, Norway, Poland, Portugal, 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 CENAll right
9、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10084:2008: E -,-,- EN 10084:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references4 3 Terms and definitions .5 4 Classification and designation.5 4.1 Classification5 4.2 Designation
10、6 5 Information to be supplied by the purchaser .6 5.1 Mandatory information6 5.2 Options .6 6 Manufacturing process .7 6.1 Melting process7 6.2 Deoxidation 7 6.3 Manufacture of the product7 6.4 Heat-treatment condition and surface finish at the time of delivery7 6.5 Cast separation8 7 Requirements.
11、8 7.1 Chemical composition, hardness and hardenability .8 7.2 Technological properties8 7.3 Structure.8 7.4 Internal soundness9 7.5 Surface condition.9 7.6 Dimensions, tolerances on dimensions and shape.9 8 Inspection and testing.9 8.1 Types and contents of inspection documents .9 8.2 Specific inspe
12、ction and testing10 9 Marking.10 Annex A (normative) Options.31 Annex B (informative) Dimensional standards applicable to products complying with this European Standard33 Annex C (normative) Determining the microscopic non-metallic inclusions content .34 Annex D (informative) Comparison of steel gra
13、des specified in this European Standard and ISO 683-11:1987 and other steel grades previously standardized nationally.35 Annex E (informative) Classification of steel grades according to minimum tensile strength as a function of diameter after hardening and tempering at 200 C.36 Bibliography37 BS EN
14、 10084:2008 -,-,- EN 10084:2008 (E) 3 Foreword This document (EN 10084:2008) has been prepared by Technical Committee ECISS/TC 23 “Steels for heat treatment, alloy steels and free-cutting steels - Qualities and dimensions”, the secretariat of which is held by DIN. This European Standard shall be giv
15、en the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this document may
16、 be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10084:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to im
17、plement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Repub- lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
18、land and the United Kingdom. BS EN 10084:2008 -,-,- EN 10084:2008 (E) 4 1 Scope 1.1 This European Standard gives the technical delivery requirements for: semi-finished products, hot formed, for example blooms, billets, slabs (see NOTE 2 and NOTE 3), bars (see NOTE 2), rod, wide flats, quarto plates,
19、 hot-rolled sheet/plate and strip, hammer and drop forgings (see NOTE 2), manufactured from the case hardening non alloyed or alloyed steels (see NOTE 4) listed in Table 3 and sup- plied in one of the heat treatment conditions given for the different types of products in Table 1, lines 2 to 7 and in
20、 one of the surface conditions given in Table 2. The steels are in general intended for the fabrication of case-hardened (see Clause 3) machine parts. NOTE 1 European Standards relating to steels complying with the requirements for the chemical composition in Ta- ble 3 but which are supplied in othe
21、r product forms or treatment conditions than given above or are intended for special applications, and European Standards for similar steel grades are listed in the Bibliography. NOTE 2 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars
22、are included under semi-finished products or bars and not under the term “hammer and drop forgings“. NOTE 3 Special agreements shall be made when ordering non-deformed continuously cast semi-finished products. NOTE 4 In accordance with EN 10020, the steels covered by this European Standard are speci
23、al steels. 1.2 In special cases variations in these technical delivery requirements or additions to them may form the subject of an agreement at the time of enquiry and order (see Annex A). 1.3 In addition to the specifications of this European Standard, the general technical delivery requirements o
24、f EN 10021 are applicable, unless otherwise specified. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer- ences, only the edition cited applies. For undated references, the latest edition of the referenced document (incl
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