BS EN 10087-1999 快削钢.热轧棍和棒半成品技术提交条件.pdf

BRITISH STANDARD BS EN 10087:1999 Incorporating Corrigenda Nos. 1 and 2 Free cutting steels Technical delivery conditions for semi-finished products, hot-rolled bars and rods The European Standard EN 10087:1998 has the status of a British Standard ICS 77.140.60 Licensed Copy: London South Bank University, London South Bank University, Sun Jul 09 11:55:31 BST 2006, Uncontrolled Copy, (c) BSI BS EN 10087:1999 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 15 January 1999 © BSI 23 January 2006 ISBN 0 580 30635 6 National foreword This British Standard is the English language version of EN 10087:1998. Together with BS EN 10083-1:1991, BS EN 10084:1998, BS EN 10088-1:1995, BS EN 10088-2:1995 and BS EN 10088-3:1995, it supersedes BS 970-1:1996 which is withdrawn. National annex NA describes steels used in the United Kingdom but not included in the European Standard. The UK participation in its preparation was entrusted to Technical Committee ISE/31, Wrought steels, which has the responsibility to: aid enquirers to understand the text; 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 obtained 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” facility 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 obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 12, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments 10442 Corrigendum No. 1 February 1999National annex NA added 15803 Corrigendum No. 2 23 January 2006 Revision of the supersession details Licensed Copy: London South Bank University, London South Bank University, Sun Jul 09 11:55:31 BST 2006, Uncontrolled Copy, (c) BSI BS EN 10087:1999 © 16 January 2006i Contents Page National forewordInside front cover Foreword2 Text of EN 100873 National annex NA (informative) Non-conflicting national additionsInside back cover Licensed Copy: London South Bank University, London South Bank University, Sun Jul 09 11:55:31 BST 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sun Jul 09 11:55:31 BST 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 10087 September 1998 ICS 77.140.50; 77.140.60; 77.140.65 Descriptors: Iron and steel products, hot-rolled products, metal bars, wire rod, free machining steels, grades, quality, chemical position, mechanical properties, heat treatment, delivery condition, surface defects, inspection, tests English version Free-cutting steels Technical delivery conditions for semi-finished products, hot-rolled bars and rods Aciers de décolletage Conditions techniques de livraison pour les demi-produits, barres et fils-machine laminés à chaud Automatenstähle Technische Lieferbedingungen für Halbzeug, warmgewalzte Stäbe und Walzdraht This European Standard was approved by CEN on 4 September 1998. 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 on application to the Central Secretariat 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 Central Secretariat 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. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10087:1998 E Licensed Copy: London South Bank University, London South Bank University, Sun Jul 09 11:55:31 BST 2006, Uncontrolled Copy, (c) BSI EN 10087:1998 © 16 January 2006 2 Foreword This European Standard 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. ECISS/TC 23 met on 1st/2nd July 1997 in Düsseldorf and agreed on the text for submission of this draft European Standard to COCOR-Vote. The following countries were represented in the meeting: Finland, France, Germany, Italy and United Kingdom. The United Kingdom issues a non-conflicting national addition which describes a steel used in the United Kingdom but not included in this European Standard. 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 March 1999, and conflicting national standards shall be withdrawn at the latest by March 1999. According to the CEN/CENELEC 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, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 3.1Free-cutting steels3 4Classification and designation3 4.1Designation3 5Information to be supplied by the purchaser3 5.1Mandatory information3 5.2Options4 6Manufacturing process4 6.1General4 6.2Treatment condition at delivery4 6.3Cast separation4 7Requirements4 7.1Chemical composition and mechanical properties4 Page 7.2Weldability4 7.3Structure4 7.4Internal soundness4 7.5Surface quality4 7.6Dimensions, tolerances on dimensions and shape5 8Inspection and testing5 8.1Types and contents of inspection documents5 8.2Specific inspection and testing5 9Marking5 Annex A (normative) Ruling section for the mechanical properties11 Annex B (normative) Supplementary or special requirements12 Annex C (informative) Bibliography12 Annex D (informative) Dimensional standards applicable to products complying with this European Standard12 National annex NA (informative) Non-conflicting national additionsInside back cover Figure A.1 Diameter of the ruling section for square and rectangular sections for quenching in oil or water11 Table 1 Types of steel, chemical composition (applicable to cast analysis)6 Table 2 Permissible deviations between specified analysis and product analysis 6 Table 3 Hardness and tensile strength in the untreated condition of free-cutting steels not intended for heat-treatment7 Table 4 Hardness and tensile strength of case hardening free-cutting steels in the untreated condition7 Table 5 Mechanical properties of direct-hardening free-cutting steels8 Table 6 Conditions for heat treatment of case-hardening free-cutting steels9 Table 7 Conditions for heat treating of direct-hardening free-cutting steels9 Table 8 Test conditions for verification of compliance with the various requirements10 Table NA1 Chemical composition (% by mass) 13 Table NA2 Mechanical properties in the normalized condition13 Table NA3 Mechanical properties in the quenched and tempered condition13 Licensed Copy: London South Bank University, London South Bank University, Sun Jul 09 11:55:31 BST 2006, Uncontrolled Copy, (c) BSI EN 10087:1998 © 16 January 20063 1 Scope 1.1 This European Standard gives the technical delivery conditions for semi-finished products; hot-rolled bars (including peeled bars); rods; manufacturerd from the free-cutting steels listed in Table 1. This European Standard covers those groups of free-cutting steels classified as listed in Table 1. NOTE European Standards for similar steels are listed for information in Annex C. 1.2 In special cases, variations in these technical delivery conditions or additions to them may form the subject of an agreement at the time of enquiry and order (see Annex B). 1.3 In addition to the specifications of this European Standard, the general technical delivery conditions specified in EN 10021 are applicable unless otherwise specified below. 2 Normative references This European Standard incorporates by dated 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 dated 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 the publication referred to applies. EN 10002-1, Metallic materials Tensile testing Part 1: Method of test (at ambient temperature). EN 10003-1, Metallic materials Brinell hardness test Part 1: Test method. EN 10020, Definition and classification of grades of steel. EN 10021, General technical delivery requirements for steel and iron products. EN 10027-1, Designation systems for steel Part 1: Steel names, principal symbols. EN 10027-2, Designation systems for steel Part 2: Numerical system. EN 10052, Vocabulary of heat treatment terms for ferrous products. EN 10079, Definition of steel products. EN 10204, Metallic products Types of inspection documents (includes amendment A1:1995). EN 10221, Surface quality classes for hot-rolled bars and rods Technical delivery conditions. CR 10260 ECISS IC 10, Designation systems for steel Additional symbols. EN ISO 377, Steel and steel products Location and preparation of test pieces for mechanical testing. EURONORM 103, Microscopic determination of the ferritic or austenitic grain size of steels1). ISO 14284, Steel and iron Sampling and preparation of samples for the determination of chemical composition. 3 Definitions For the purposes of this European Standard the following definition applies in addition to the definitions in EN 10020, EN 10021, EN 10052, EN 10079, EN ISO 377 and ISO 14284. 3.1 free-cutting steels steels with a minimum sulfur content of at least, in general, 0,1 %, are regarded as free-cutting steels 4 Classification and designation 4.1 Classification All steels covered by this European Standard are classified as non-alloy quality steels according to EN 10020. 4.2 Designation 4.2.1 Steel names For the steel grades covered by this European Standard, the steel names, as given in Table 1, are allocated in accordance with EN 10027-1 and CR 10260. 4.2.2 Steel numbers For the steel grades covered by this European Standard, the steel numbers, as given in Table 1, are allocated in accordance with EN 10027-2. 5 Information to be supplied by the purchaser 5.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order: a) the quantity to be delivered; b) the designation of the product form (e.g. round or square); c) the number of the dimensional standard (see Annex D); 1) It may be agreed at the time of ordering, until this EURONORM has been adopted as a European Standard, that either this EURONORM or a corresponding national standard may be applied. Licensed Copy: London South Bank University, London South Bank University, Sun Jul 09 11:55:31 BST 2006, Uncontrolled Copy, (c) BSI EN 10087:1998 4 © 16 January 2006 d) the dimensions and tolerances on dimensions and shape and, if applicable, letters denoting relevant special tolerances; e) the number of this European Standard (EN 10087); f) steel name or steel number (see 4.2); g) the standard designation for a test report (2.2) or, if required, any other type of inspection document in accordance with EN 10204 (see 8.1). EXAMPLE 20, rounds, EURONORM 60, 40 × 8 000; EN 10087, 35S20; EN 10204, 2.2; or 20 rounds, EURONORM, 60, 40 × 8 000; EN 10087, 1.0726; EN 10204, 2.2. 5.2 Options A number of options are specified in this European Standard and listed below. If the purchaser does not indicate his wish to implement one of these options, the supplier shall supply in accordance with the basic specification of this European Standard (see 5.1): a) any special requirement on treatment condition at delivery (see 6.2); b) any special requirement on grain size (see 7.3 and B.2); c) any requirement for internal soundness (see 7.4 and B.3); d) any requirement relating to surface quality (see 7.5.3); e) any requirement concerning suitability of bars and for bright drawing (see 7.5.4); f) any requirement relating to removal of surface defects (see 7.5.5); g) any requirement concerning special marking of the products (see clause 9 and B.5); h) any special requirement concerning verification of the mechanical properties in the quenched and tempered condition on a reference test piece (see 8.2.1.1 e) and B.1); i) any verification of the product analysis (see 8.2.1.1 f), Table 8 and B.4). 6 Manufacturing process 6.1 General The manufacturing process of the steel and of the products is left to the discretion of the manufacturer with the restrictions given by the requirements in 6.2 (see also 7.3). 6.2 Treatment condition at delivery Unless otherwise agreed, products shall be delivered in the untreated condition. 6.3 Cast separation The products shall be delivered separated by cast. 7 Requirements 7.1 Chemical composition and mechanical properties The product shall have a chemical composition and mechanical properties, i.e. tensile strength and hardness, appropriate to the product form and treatment condition as set out in Table 1 to Table 5. 7.2 Weldability Because of their high sulfur and phosphorus contents, free-cutting steels are not normally recommended for welding. 7.3 Structure Unless otherwise agreed at the time of enquiry and order, the grain size shall be left to th