1、December 2013 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 77.140.50!%*z“2078727www.din.deDDIN EN 10268Cold rolled steel flat products with high yield strength for cold forming Technical delivery conditions;English version EN 10268:2006+A1:2013,English translation of DIN EN 10268:2013-12Kaltgewalzte Flacherzeugnisse aus Sthlen mit hoher Streckgrenze zum
3、Kaltumformen Technische Lieferbedingungen;Englische Fassung EN 10268:2006+A1:2013,Englische bersetzung von DIN EN 10268:2013-12Produits plats lamins froid haute limite dlasticit pour formage froid Conditions techniques de livraison;Version anglaise EN 10268:2006+A1:2013,Traduction anglaise de DIN EN
4、 10268:2013-12SupersedesDIN EN 10268:2006-10 andDIN EN 10268 Corrigendum1:2007-02www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 15 pages 12.13 DIN EN 10268:2013-12 2 A comma is used as the decimal marker. National foreword This documen
5、t (EN 10268:2006+A1:2013) has been prepared by Technical Committee ECISS/TC 109 “Coated and uncoated flat products to be used for cold forming” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Iron and Steel Standards Comm
6、ittee), Working Committee NA 021-00-01-01 UA Flacherzeugnisse aus Stahl zum Kaltumformen. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 10113 DIN ISO 10113 ISO 10275 DIN ISO 10275 DIN EN 10268 Corrigendum 1:2007-02 has been incorporat
7、ed in this document. Amendments This standard differs from DIN EN 10268:2006-10 and DIN EN 10268 Corrigendum 1:2007-02 as follows: a) the definitions of LA, Y and I steels have been revised; b) in Clause 4 “Designation”, steel grade HC260LA-A-m is now given in Example 1; c) steel grades HC180P, HC22
8、0P, HC260P and HC300P have been deleted from Tables 1 and 2; d) steel grades HC460LA and HC500LA have been included in Tables 1, 2 and 3; e) in Table 1, the sulfur values for steel grades HC180B, HC220B, HC260B and HC300B have been corrected; f) in Table 1, the maximum Nb value for steel grade HC260
9、LA has been added; g) in Table 3, the 0,2 % proof strength values for steel grade HC420LA and footnote b have been corrected; h) Subclause 5.5.4 “Freedom from stretcher strains” has been added; i) Subclause 6.3 “Number of tests” has been revised; j) the standard has been editorially revised. Previou
10、s editions DIN EN 10268: 1999-02, 2006-10 DIN EN 10268 Corrigendum 1: 2007-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10268:2006+A1 September 2013 ICS 77.140.50 Supersedes EN 10268:2006 English Version Cold rolled steel flat products with high yield strength for cold forming - Technical
11、 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 CEN on 12 June 2006 a
12、nd includes Amendment 1 approved by CEN on 5 July 2013. 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
13、 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, German). A version in any other language made by translation under the responsibility of a CEN memb
14、er 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Fra
15、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES K
16、OMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10268:2006+A1:2013: E EN 10268:2006+A1:2013 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references
17、 4 3 Terms and definitions . 5 4 Designation 5 5 Requirements . 6 5.1 Steelmaking and manufacturing processes . 6 5.2 Chemical composition 6 5.3 Delivery conditions 6 5.4 Mechanical properties . 7 5.5 Surface characteristics . 9 5.5.1 General 9 5.5.2 Surface quality . 9 5.5.3 Surface finish . 9 5.5.
18、4 !Freedom from stretcher strains“ . 10 5.6 Suitability for surface coating 10 5.7 Weldability 10 5.8 Tolerances on dimensions and shape 10 6 Tests 10 6.1 General 10 6.2 Inspection units . 10 6.2.1 Products of rolled width 600 mm 10 6.2.2 Products of rolled width 1,2 mm special agreements shall be m
19、ade. cWhen 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. For a thickness less than or equal to 0,5 mm, the minimum value is reduced by 4 units. dThe minimum values for r (trans.) and n (trans.) only apply to products of
20、 thickness equal to or greater than 0,5 mm. eFor products with thickness over 2 mm the minimum r (trans.) value is reduced by 0,2. “ DIN EN 10268:2013-12 EN 10268:2006+A1:2013 (E) 9 For the LA grades it may be agreed that the requirements given in Table 3 for longitudinal test pieces shall apply ins
21、tead of those for transverse test pieces. ! Table 3 Mechanical properties 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
22、1.0548 320-410 400-500 22 HC380LA 1.0550 350-450 430-550 20 HC420LA 1.0556 390-500 460-580 18 HC460LA 1.0574 420-560 480-630 14 HC500LA 1.0573 460-600 520-690 13 NOTE 1 MPa = 1 N/mm2aIf the yield strength is pronounced, the values apply to the lower yield point ReL. bWhen the thickness is less than
23、or equal to 0,7 mm and greater than 0,5 mm, the minimum value for elongation is reduced by 2 units. For a thickness less than or equal to 0,5 mm, the minimum value is reduced by 4 units. “ 5.5 Surface characteristics 5.5.1 General The surface properties cover surface quality and surface finish. 5.5.
24、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 Products of rolled width 600 mm The requirements of EN 10139 apply. 5.5.3 Surface
25、 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. DIN EN 10268:2013-12 EN 10268:2006+A1:2013 (E) 10 5.5.4 !Freedom from stretcher strains Freedom from stretcher strains of the surface qualit
26、y B is guaranteed for: 3 months for bake-hardening grades and 6 months for all other grades commencing from the agreed date of availability.“ 5.6 Suitability for surface coating The products may be intended for metallic coating applied by hot dipping or electrodeposition and/or organic or other coat
27、ings. When such a coating is required, this shall be specified at the time of enquiry and order. 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 Tol
28、erances on dimensions and shape The tolerances 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 require
29、ments for: type of inspection and testing, specific 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 fo
30、r the surface finish. 6.2 Inspection units 6.2.1 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 w
31、idth 600 mm The inspection unit is 5 t or a fraction of 5 t of product of the same steel grade, same heat treatment with the same surface properties and same nominal thickness. Coils of mass exceeding 5 t shall be considered as comprising a single inspection unit. DIN EN 10268:2013-12 EN 10268:2006+
32、A1:2013 (E) 11 6.3 Number of tests !For each inspection unit, a tensile test and, where appropriate, a determination of the plastic strain ratio r and the tensile strain hardening exponent n (see Table 2) in the as-delivered state shall be carried out. In the case of bake hardening steels, further t
33、ensile tests shall be carried out (see 6.5.3). By agreement at the time of enquiry and order, the manufacturer may determine the tensile properties and/or the Bake-Hardening Index BH2 by calculation in accordance with an approved method.“ 6.4 Sampling The requirements of EN ISO 377 and EN 10021 are
34、supplemented by the following specific requirements: for sheet and cut lengths the selection of products to be tested and the position of the samples in the products is left to the discretion of the inspection representative; in the case of wide strip and slit wide strip, the sample should preferabl
35、y be taken from the outer end. If the width of the product permits, the test pieces for the tensile test shall be taken transverse to the direction of rolling. For LA grades, longitudinal tensile test pieces may be agreed on. 6.5 Test methods ! 6.5.1 The tensile test shall be carried out in accordan
36、ce with EN ISO 6892-1, method B, using test piece number 2 from EN ISO 6892-1:2009, Annex B (initial gauge length Lo = 80 mm and a width of 20 mm). Method A may be used at the discretion of manufacturer.“ 6.5.2 The determination of the plastic strain ratio r and the strain hardening exponent n shall
37、 be carried out in accordance with ISO 10113 and ISO 10275. The strain ratio r and the strain hardening exponent n are determined within the strain range 10% to 20%. As the determination shall be carried out in the range of homogeneous deformation, then if the uniform elongation of the tested materi
38、al is lower than 20%, values for the upper limit of the strain range of 15% to 20% can be applied. ! 6.5.3 The determination of the yield strength increase by the effect of heat treatment (Bake-Hardening-Index) shall be carried out in accordance with EN 10325.“ 6.6 Chemical analysis For the determin
39、ation of the chemical composition, EN ISO 14284 and the corresponding European Standards shall apply. 6.7 Retests The requirement of EN 10021 shall apply. 6.8 Inspection document By agreement at the time of enquiry and order an inspection document chosen from those given in European Standard EN 1020
40、4 shall be supplied. DIN EN 10268:2013-12 EN 10268:2006+A1:2013 (E) 12 7 Marking 7.1 Products of rolled width 600 mm Unless otherwise agreed at the time of enquiry and order, marking shall be carried out on the inspected surface by means of easy removable non-corrosive ink. Slit wide strip products
41、are not marked unless otherwise agreed at the time of enquiry and order. 7.2 Products of rolled width 600 mm Marking of the products in line with the specifications of EN 10021 may be agreed at the time of enquiry and order. 8 Packing The packing requirements shall be agreed at the time of enquiry a
42、nd order. 9 Disputes With regard to any claims and any action arising, EN 10021 shall apply. 10 Information to be supplied by the purchaser at the time of enquiry and order In order to allow the manufacturer to supply products conforming to this European Standard, the following information shall be
43、provided by the purchaser at the time of enquiry and order: a) full designation as given in clause 4; b) nominal dimensions, the tolerances according to the dimensional standard and the ordered quantities; c) limits on the mass and the sizes of the coils and the individual bundles; d) intended appli
44、cation of the products, including surface coatings; e) if the products are to be welded, the indication of the method to be used; f) if the products are to be supplied as suitable for making a specific part; g) if inspection documents are required and their type; h) if an external inspection is to b
45、e carried out at the manufacturers works; i) if oiling is not required; j) if other protective coatings are required; k) detailed description of all other special requirements; l) any special requirements for packing and marking (e. g. bar coding, see EN 606); m) position of the surface of better surface quality. DIN EN 10268:2013-12 EN 10268:2006+A1:2013 (E) 13 Bibliography EN 606, Bar coding Transport and handling labels for steel products DIN EN 10268:2013-12
