BS EN 10268-2006 Cold rolled steel flat products with high yield strength for cold forming Technical delivery conditions.pdf
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1、BRITISH STANDARD BS EN 10268:2006 Cold rolled steel flat products with high yield strength for cold forming Technical delivery conditions The European Standard EN 10268:2006 has the status of a British Standard ICS 77.140.50 ? Licensed Copy: Institute Of Technology Tallaght, Institute of Technology,
2、 Thu Jun 28 17:59:58 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 10268:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 September 2006 BSI 2006 ISBN 0 580 48667 2 National foreword This British Standard was published by BSI. It is
3、 the UK implementation of EN 10268:2006. It supersedes BS EN 10268:1999 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/10, Flat rolled steels products. A list of organizations represented on ISE/10 can be obtained on request to its secretary. Thi
4、s 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 issued since publication Amd. No. DateComments Licensed Copy: Institut
5、e Of Technology Tallaght, Institute of Technology, Thu Jun 28 17:59:58 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10268 July 2006 ICS 77.140.50Supersedes EN 10268:1998 English Version Cold rolled steel flat products with high yield strength for co
6、ld forming - Technical delivery conditions Produits plats lamins froid haute limite dlasticit pour formage froid - Conditions techniques de livraison Kaltgewalzte Flacherzeugnisse aus Sthlen mit hoher Streckgrenze zum Kaltumformen - Technische Lieferbedingungen This European Standard was approved by
7、 CEN on 12 June 2006. 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 standard
8、s 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
9、 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norwa
10、y, 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 2006 CENAll rights of exploitation in any form
11、and by any means reserved worldwide for CEN national Members. Ref. No. EN 10268:2006: E Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Jun 28 17:59:58 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 10268:2006 (E) 2 Contents Foreword3 1Scope 4 2Normative references4 3Ter
12、ms and definitions .5 4Designation 5 5Requirements.6 5.1Steelmaking and manufacturing processes 6 5.2Chemical composition 6 5.3Delivery conditions6 5.4Mechanical properties.7 5.5Surface characteristics .9 5.5.1General9 5.5.2Surface quality.9 5.5.3Surface finish.9 5.6Suitability for surface coating9
13、5.7Weldability10 5.8Tolerances on dimensions and shape 10 6Tests10 6.1General10 6.2Inspection units .10 6.2.1Products of rolled width 600 mm10 6.2.2Products of rolled width 1,2 mm special agreements must be made. c When the thickness is less than or equal to 0,7 mm and greater than 0,5 mm, the minim
14、um value for elongation is reduced by 2 units. d The minimum values for r (trans.) and n (trans.) only apply to products of thickness equal to or greater than 0,5 mm. e For products with thickness over 2 mm the minimum r (trans.) value is reduced by 0,2. Licensed Copy: Institute Of Technology Tallag
15、ht, Institute of Technology, Thu Jun 28 17:59:58 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 10268:2006 (E) 9 For the LA grades it may be agreed that the requirements given in Table 3 for longitudinal test pieces shall apply instead of those for transverse test pieces. Table 3 Mechanical propertie
16、s of longitudinal test pieces Steel name Steel number 0,2% proof strength a Rp0,2 long. MPa Tensile strength Rm long. MPa Elongation b A80 min. long. % HC260LA 1.0480 240-310 340-420 27 HC300LA 1.0489 280-360 370-470 24 HC340LA 1.0548 320-410 400-500 22 HC380LA 1.0550 360-460 430-550 20 HC420LA 1.05
17、56 400-500 460-580 18 NOTE 1 MPa = 1 N/mm2. a If the yield strength is pronounced, the values apply to the lower yield point (ReL). b When the thickness is less than or equal to 0,7 mm and greater than 0,5 mm, the minimum value for elongation is reduced by 2 units. 5.5 Surface characteristics 5.5.1
18、General The surface properties cover surface quality and surface finish. 5.5.2 Surface quality 5.5.2.1 Products of rolled width 600 mm The products are supplied with one of the surface qualities A or B as defined in EN 10130 except for LA grades for which only surface quality A applies. 5.5.2.2 Prod
19、ucts of rolled width 600 mm The requirements of EN 10139 apply. 5.5.3 Surface finish 5.5.3.1 Products of rolled width 600 mm The requirements of EN 10130 apply. 5.5.3.2 Products of rolled width 600 mm The requirements of EN 10139 apply. 5.6 Suitability for surface coating The products may be intende
20、d for metallic coating applied by hot dipping or electrodeposition and/or organic or other coatings. When such a coating is required, this shall be specified at the time of enquiry and order. Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Thu Jun 28 17:59:58 GMT+00:00 2007
21、, Uncontrolled Copy, (c) BSI EN 10268:2006 (E) 10 5.7 Weldability The products are suitable for standard welding processes. However, the welding process should be specified at the time of enquiry and order, especially in the case of gas welding. 5.8 Tolerances on dimensions and shape The tolerances
22、on dimensions and shape of products in rolled widths 600 mm are those given in EN 10131; those of products in rolled widths 600 mm are given in EN 10140. 6 Tests 6.1 General The purchaser shall specify at the time of enquiry and order his or her requirements for: type of inspection and testing, spec
23、ific or non specific: see EN 10021; type of inspection document: see EN 10204. Specific inspection and testing shall be carried out in accordance with 6.2 to 6.7. Specific inspection and testing may not be specified either for the product analysis or for the surface finish. 6.2 Inspection units 6.2.
24、1 Products of rolled width 600 mm The inspection unit is 30 t or fraction of 30 t for products of the same quality and nominal thickness. When a coil exceeds 30 t, it constitutes a single inspection unit, as does its products. 6.2.2 Products of rolled width 600 mm The inspection unit is 5 t or a fra
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