1、BSI Standards PublicationBS EN 10027-2:2015Designation systems for steelsPart 2: Numerical systemBS EN 10027-2:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 10027-2:2015.It supersedes BS EN 10027-2:1992 which is withdrawn.The UK participation in its prepa
2、ration was entrusted to TechnicalCommittee ISE/100, Steel, General Issues.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctappl
3、ication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 83542 1ICS 77.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Commit
4、tee on 30 April 2015.Amendments issued since publicationDate Text affectedBS EN 10027-2:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10027-2 April 2015 ICS 77.080.20 Supersedes EN 10027-2:1992English Version Designation systems for steels - Part 2: Numerical system Systmes de dsignation
5、des aciers - Partie 2: Systme numrique Bezeichnungssysteme fr Sthle - Teil 2: NummernsystemThis European Standard was approved by CEN on 7 February 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the sta
6、tus 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 Standard exists in three official versions (English, French, G
7、erman). 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 national standards bodies of Austria, Belgium, Bulgaria, Croa
8、tia, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and U
9、nited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.
10、EN 10027-2:2015 EBS EN 10027-2:2015EN 10027-2:2015 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principles 4 5 Structure of steel numbers .5 Annex A (normative) Provisions and procedures for the allocation of steel numbers .8 Annex B (normative) Guid
11、ance for completing forms I and II . 10 BS EN 10027-2:2015EN 10027-2:2015 (E) 3 Foreword This document (EN 10027-2:2015) has been prepared by Technical Committee ECISS/TC 100 “General issues”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national sta
12、ndard, either by publication of an identical text or by endorsement, at the latest by October 2015, and conflicting national standards shall be withdrawn at the latest by October 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent right
13、s. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10027-2:1992. In comparison with EN 10027-2:1992, the following significant changes were made: a) in 4.3 the wording was modified; b) in Clause 5 the number of digits for th
14、e sequential number were extended to 4 and a NOTE as well as an explanatory text were added; c) the standard was revised editorially. This document is the second Part of the European Standard “Designation systems for steels“, the first Part being “Steel names“. According to the CEN-CENELEC Internal
15、Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irelan
16、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 10027-2:2015EN 10027-2:2015 (E) 4 1 Scope 1.1 This European Standard specifies a numbering system, referred to as steel
17、 numbers, for the designation of steel grades. It deals with the structure of steel numbers and the organization for their registration, allocation and dissemination. Such steel numbers are complementary to steel names set out in EN 10027-1. This European Standard is applicable to steels specified i
18、n European Standards. This European Standard may be applied to national steels and proprietary steels. NOTE Although the scope of the systems is limited to steel, it is structured so as to be capable of being extended to include other industrially produced materials. 1.2 Steel numbers established in
19、 accordance with this system have a fixed number of digits (see Clause 5). They are better suited for data processing than steel names established in accordance with EN 10027-1. 1.3 For steels specified in European Standards the application for allocation of steel numbers (see A.6 to A.9) is the res
20、ponsibility of the ECISS Technical Committee concerned. For national steel grades, the responsibility is that of the national competent body. NOTE Applications from European organizations having a specified interest in the standardization of steel and steel products (e.g. ASD, EUROFER) are submitted
21、 via the ECISS Central Secretariat (see A.9). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition o
22、f the referenced document (including any amendments) applies. EN 10020, Definition and classification of grades of steel EN 10027-1, Designation systems for steels Part 1: Steel names EN 10079, Definition of steel products 3 Terms and definitions For the purposes of this document, the terms and defi
23、nitions given in EN 10020 and EN 10079 apply. 4 Principles 4.1 Each steel number shall refer only to one steel grade. Conversely, each steel grade shall correspond to one steel number. Accordingly, a number allocated to a steel shall not, in principle (see 4.3), be used for any other steel grade (se
24、e A.1 and A.2). 4.2 Steel numbers shall be allocated by the European Registration Office in accordance with Annex A. 4.3 The European Registration Office (see A.9) shall revise the list of registered steels at appropriate intervals. The object of such revisions is to review, in cooperation with the
25、bodies responsible for the application of steel numbers, those steel numbers for steels no longer in production. The revised list of registered steels is published on the internet (www.stahldaten.de). Steel numbers deleted in accordance with the above procedure shall not be re-allocated to future st
26、eel grades. NOTE Information concerning deleted steel grades can be received from the European Registration Office. BS EN 10027-2:2015EN 10027-2:2015 (E) 5 4.4 Steel numbers shall not normally be changed. If, under exceptional circumstances, a change is unavoidable, it shall be in accordance with 4.
27、1, 4.2 and 4.3. 5 Structure of steel numbers 1. XX XX XX Sequential number Steel group number (see Table 1) Material group number (1 = Steel see Note) NOTE Numbers 2 to 9 of the material group may be allocated to other materials. See note to 1.1 or 1.3. For allocating new steel numbers with a 4 digi
28、t sequential number it shall be ensured that the 1sttwo digits of the sequential number are completely filled (e.g. 1.xx99) before allocating the last two digits of the sequential number (e.g. 1.xx9901). BS EN 10027-2:2015EN 10027-2:2015 (E) 6 Table 1 Steel group number a, bNon-alloy steels Alloy st
29、eels Base steels Quality steels Special steels Quality steels Special steels Tool steels Miscellane-ous steels Stainless and heat resisting steels Structural, pressure vessel and engineering steels 00 90 10 20 30 40 50 60 70 80 Base steels Steels with special physical properties Cr Stainless steel w
30、ith 16 40; 40 100; 100); c) treatment condition, using the symbols in accordance with EN 10027-1, for which the specified properties apply. See B.6. EXAMPLE FL 16 N indicates a flat product equal to or less than 16 mm thick, in the normalized condition. BS EN 10027-2:2015EN 10027-2:2015 (E) 11 B.5 C
31、hemical composition Express chemical composition limits as, for example, 0.130.18 (not .13-.18 or 0.13 to 0.18), 1.50, 0.040. B.6 Mechanical properties The symbols used are as follows: Re= specified yield strength (ReHor Rp0,2) in MPa, with an indication of the type (e.g. ReH 240) Rm= specified tens
32、ile strength, in MPa; (e.g. 400-650, 700) A or A80= minimum specified percentage elongation after fracture (see Form II) KVmin= minimum impact energy in Joules (J) using a Charpy-V-notch test piece: L = longitudinal test piece T = transverse test piece RT = room temperature TTKV= maximum transition
33、temperature in C, of the impact energy/testing temperature curve, with KV = 27 J as transition criterion. B.7 Specified in The standard or specification in which the steel grade is specified shall be indicated. B.8 Application Indicate application (e.g. structural steels, engineering steel, steel fo
34、r case hardening, for welding electrodes, for turbines, tool steels, for manufacturing wire ropes, etc.). B.9 Characteristics Indicate characteristics (e.g. suitable for cold hardening or cold extrusion, non-magnetic, etc.). B.10 Additional information Where the space elsewhere in the form is not su
35、fficient for an exact description of the steel concerned, use the space headed “Additional information“. B.11 Warning note Organizations and individuals who deal with the allocation and administration of steel numbers take no position with regard to the validity of any patent rights claimed in conne
36、ction with any steel under consideration. Users of steel numbers are expressly advised that the determination of the validity of any such patent rights and the risk of infringement is entirely their own responsibility. BS EN 10027-2:2015EN 10027-2:2015 (E) 12 Form I The allocation of steel numbers w
37、here chemical composition is the primary specifying criterion Requester Name Organization Address Telephone, telefax, e-mail Information regarding Steel number Steel name ProductaC % Si % Mn % P % S % Form Thickness in mm Condition Requester (R) 1. Assigner (A) 1. Cr % Mo % Ni % Specified in Applica
38、tion Characteristics Date Additional information (of R or A): aFor product names use the terms and definitions in EN 10079. BS EN 10027-2:2015EN 10027-2:2015 (E) 13 Form II The allocation of steel numbers where mechanical properties are the primary specifying criteria Requester Name Organization Add
39、ress Telephone, telefax, e-mail Information regarding Steel number Steel name ProductaReMPa RmMPa bAmin.A80 min.KVmin., RTTTKV, max.Form Thickness, in mm Condition L J T J L C T C Requester (R) 1. Assigner (A) 1. Cr % Si % Mn % P % S % Specified in Application Characteristics Date Additional informa
40、tion (of R or A): aFor product names use the terms and definitions in EN 10079. bDelete inappropriate symbol. This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information a
41、nd services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)BSI Group Headquarters389 Chiswick High Road London W4 4AL UKAbout usWe bring together business, industry, government, cons
42、umers, innovators and others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all secto
43、rs choose standards to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying standardsY
44、ou can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at where hard copies can also be purchased. If you need international and foreign standards from other Standards Development Organizations, hard copies c
45、an be ordered from our Customer Services team.SubscriptionsOur range of subscription services are designed to make using standards easier for you. For further information on our subscription products go to British Standards Online (BSOL) youll have instant access to over 55,000 British and adopted
46、European and international standards from your desktop. Its available 24/7 and is refreshed daily so youll always be up to date. You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by bec
47、oming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members. You will automatically receive the latest hard copy of your standards when theyre revised or replaced. To find out more about becoming a BSI Subscribing Member and the benefits of membership, please vis
48、it a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet. Licences can cover as few or as many users as you wish. With updates supplied as soon as theyre available, you can be sure your documentation is current. For further information, email .RevisionsOur
49、 British Standards and other publications are updated by amendment or revision. We continually improve the quality of our products and services to benefit your business. If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre.CopyrightAll the data, software and documentation set out in all British Standards and other BSI pub
