1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Heat-treatable steels, alloy steels and free-cutting steelsPart 3: Case-hardening steelsBS EN ISO 683-3:2018National forewordThis British Standard is the UK implementation of EN ISO 683-3:2018. It is identical to ISO 68
2、3-3:2016. It supersedes BS EN 10084:2008, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ISE/105, Steels for Heat Treatment, Alloy Steels, Free-Cutting Steels and Stainless Steels.A list of organizations represented on this committee can be obtained o
3、n request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 96849 5ICS 77.140.10; 77.140.20Complianc
4、e with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 683-3:2018EUROPEAN
5、 STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 683-3June 2018ICS 77.140.10; 77.140.20 Supersedes EN 10084:2008EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 683
6、-3:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersHeat-treatable steels, alloy steels and free-cutting steels - Part 3: Case-hardening steels (ISO 683-3:2016)Aciers pour traitement thermique, aciers allis et aciers pour dcolletage - Partie 3
7、: Aciers pour cmentation (ISO 683-3:2016)Fr eine Wrmebehandlung bestimmte Sthle, legierte Sthle und Automatensthle - Teil 3: Einsatzsthle (ISO 683-3:2016)This European Standard was approved by CEN on 18 May 2018.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulat
8、e 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 on application to the CEN-CENELEC Management Centre or to any CEN member.This European Stand
9、ard 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 CEN-CENELEC Management Centre has the same status as the official versions.CEN members are the natio
10、nal standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serb
11、ia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 683-3:2018 (E)European forewordThe text of ISO 683-3:2016 has been prepared by Technical Committee ISO/TC 17 “Steel” of the International Organization for Standardization (ISO) and has been taken over
12、 as EN ISO 683-3:2018 by Technical Committee ECISS/TC 105 “Steels for heat treatment, alloy steels, free-cutting steels and stainless steels” the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text or
13、 by endorsement, at the latest by December 2018, and conflicting national standards shall be withdrawn at the latest by December 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifyin
14、g any or all such patent rights.This document supersedes EN 10084:2008.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmar
15、k, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorseme
16、nt noticeThe text of ISO 683-3:2016 has been approved by CEN as EN ISO 683-3:2018 without any modification.iiBS EN ISO 683-3:2018EN ISO 683-3:2018 (E)The European steel numbers to the steel grades are to be found in informative Annex B. Some European steel numbers were not available at the publicati
17、on of this International standard, for this reason they are given now below.S t e e l name22Mn6 20 Cr4 20CrS4 24CrMo4 24CrMoS4S t e e l number1.1160 1.7027 1.7028 1.7208 1.7209The references to following European standards are given for information:EN 10017, Steels rod for drawing and/or cold rollin
18、g Dimensions and tolerancesEN 10021, General technical delivery conditions for steel productsEN 10029, Hot-rolled steel plates 3 mm thick or above Tolerances on dimensions and shapeEN 10048, Hot-rolled narrow steel strip Tolerances on dimensions and shapeEN 10051, Continuously hot-rolled strip and p
19、late/sheet cut from wide strip of non.-alloy and alloy steels Tolerances on dimensions and shapeEN 10058, Hot rolled flat steel bars for general purposes Dimensions and tolerances on shape and dimensionsEN 10059, Hot rolled square steel bars for general purposes Dimensions and tolerances on shape an
20、d dimensionsEN 10060, Hot rolled round steel bars - Dimensions and tolerances on shape and dimensionsEN 10061, Hot rolled hexagon steel bars Dimensions and tolerances on shape and dimensionsEN 10160, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection method)
21、EN 10204, Metallic products Types of inspection documentsEN 10308, Non-destructive testing Ultrasonic testing of steel barsiiiBS EN ISO 683-3:2018ISO 683-3:2016Foreword vi1 Scope . 12 Normative references 13 Terms and definitions . 24 Classification and designation . 34.1 Classification . 34.2 Desig
22、nation 35 Information to be supplied by the purchaser. 35.1 Mandatory information . 35.2 Options and/or supplementary or special requirements 35.3 Ordering example . 46 Manufacturing process 46.1 General . 46.2 Deoxidation 46.3 Heat-treatment condition and surface condition at delivery . 46.3.1 Norm
23、al condition at delivery 46.3.2 Particular heat-treatment condition . 46.3.3 Particular surface conditions 46.4 Traceability of the cast . 47 Requirements 57.1 Chemical composition, hardness and hardenability 57.1.1 General 57.1.2 Chemical composition . 57.2 Machinability 57.3 Cold shearability 57.4
24、 Grain size 57.5 Non-metallic inclusions . 67.5.1 Microscopic inclusions . 67.5.2 Macroscopic inclusions 67.6 Internal soundness 67.7 Surface condition 67.8 Shape, dimensions and tolerances . 68 Inspection 78.1 Testing procedures and types of documents 78.2 Frequency of testing . 78.3 Tests to be ca
25、rried out for specific inspection . 78.3.1 General 78.3.2 Visual and dimensional inspection 79 Test methods . 89.1 Chemical analysis 89.2 Hardness and hardenability tests . 89.2.1 Verification of hardness . 89.2.2 Verification of hardenability 89.3 Retests 810 Marking 8Annex A (normative) Supplement
26、ary or special requirements 29Annex B (informative) Designation of steels given in this part of ISO 683 and of comparable grades covered in various designation systems31iv ISO 2016 All rights reservedContents PageBS EN ISO 683-3:2018ISO 683-3:2016Annex C (informative) Dimensional standards applicabl
27、e to products complying with this part of ISO 683 .33Annex D (informative) Classification of steel grades according to minimum tensile strength as a function of diameter after hardening and tempering at 200 C .34Bibliography .35 ISO 2016 All rights reserved vBS EN ISO 683-3:2018ISO 683-3:2016Forewor
28、dISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical
29、 committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of elec
30、trotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was d
31、rafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent
32、rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not cons
33、titute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso
34、/foreword.html.The committee responsible for this document is ISO/TC 17, Steel, Subcommittee SC 4, Heat-treatable and alloy steels.This second edition cancels and replaces the first edition (ISO 683-3:2014), of which it constitutes a minor revision.ISO 683 consists of the following parts, under the
35、general title Heat-treatable steels, alloy steels and free-cutting steels: Part 1: Non-alloy steels for quenching and tempering Part 2: Alloy steels for quenching and tempering Part 3: Case-hardening steels Part 4: Free-cutting steels Part 5: Nitriding steels Part 14: Hot-rolled steels for quenched
36、and tempered springs Part 15: Valve steels for internal combustion engines Part 17: Ball and roller bearing steels Part 18: Bright steel productsvi ISO 2016 All rights reservedBS EN ISO 683-3:2018Heat-treatable steels, alloy steels and free-cutting steels Part 3: Case-hardening steels1 ScopeThis par
37、t of ISO 683 specifies the technical delivery requirements for semi-finished products, hot formed, e.g. blooms, billets, slabs (see Note 1), bars (see Note 1), wire rod, finished flat products, and hammer or drop forgings (see Note 1)manufactured from the case-hardening non-alloy or alloy steels lis
38、ted in Table 3 and supplied in one of the heat-treatment conditions given for the different types of products in Table 1 and in one of the surface conditions given in Table 2.The steels are, in general, intended for the manufacture of case-hardened (see 3.1) machine parts.NOTE 1 Hammer-forged semi-f
39、inished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars are covered under semi-finished products or bars and not under the term “hammer and drop forgings”.NOTE 2 For International Standards relating to steels complying with the requirements for the chemical comp
40、osition in Table 3, however, supplied in other product forms or treatment conditions than given above or intended for special applications, and for other related International Standards, see the Bibliography.In special cases, variations in these technical delivery requirements or additions to them c
41、an form the subject of an agreement at the time of enquiry and order (see 5.2 and Annex A).In addition to this part of ISO 683, the general technical delivery requirements of ISO 404 are applicable.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this
42、 document and are indispensable to its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 377, Steel and steel products Location and preparation of samples and test pieces for
43、 mechanical testingISO 404, Steel and steel products General technical delivery requirementsISO 642:1999, Steel Hardenability test by end quenching (Jominy test)ISO 643, Steels Micrographic determination of the apparent grain sizeISO 4885, Ferrous products Heat treatments VocabularyINTERNATIONAL STA
44、NDARD ISO 683-3:2016 ISO 2016 All rights reserved 1BS EN ISO 683-3:2018ISO 683-3:2016ISO 4948-1, Steels Classification Part 1: Classification of steels into unalloyed and alloy steels based on chemical compositionISO 4948-2, Steels Classification Part 2: Classification of unalloyed and alloy steels
45、according to main quality classes and main property or application characteristicsISO 4967, Steel Determination of content of non-metallic inclusions Micrographic method using standard diagramsISO 6506-1, Metallic materials Brinell hardness test Part 1: Test methodISO 6508-1, Metallic materials Rock
46、well hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)ISO 6929, Steel products VocabularyISO 7788, Steel Surface finish of hot-rolled plates and wide flats Delivery requirementsISO 9443, Heat-treatable and alloy steels Surface quality classes for hot-rolled round bars and wi
47、re rods Technical delivery conditionsISO 10474, Steel and steel products Inspection documentsISO 14284, Steel and iron Sampling and preparation of samples for the determination of chemical compositionISO/TR 9769, Steel and iron Review of available methods of analysisISO/TS 4949, Steel names based on
48、 letter symbols3 Terms and definitionsFor the purposes of this document, the definitions of ISO 377, ISO 4885, ISO 4948-1, ISO 4948-2, ISO 6929, ISO 14284 and the following apply.NOTE For deviations from these terms and definitions, see Note 1 of the Scope and footnote a of Table 2.3.1case-hardening
49、 steelsstructural steels with a relatively low carbon content, which are carburized or carbonitrided on their surface and subsequently hardenedNote 1 to entry: These steels, after hardening, have a high degree of hardness in the surface zone and good resistance to wear, while the core material is characterized principally by extreme toughness.Note 2 to entry: Further, possibilities for heat treatment of case-hardening steels are, for example, nitrocarburizing and nitriding.3.2non
