1、October 2015 Translation by DIN-Sprachendienst.English price group 11No 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).IC
2、S 77.140.50!%F“2358827www.din.deDIN EN 10338Hot rolled and cold rolled noncoated products of multiphase steels for cold forming Technical delivery conditions;English version EN 10338:2015,English translation of DIN EN 10338:2015-10Warmgewalzte und kaltgewalzte Flacherzeugnisse ohne berzug aus Mehrph
3、asensthlen zumKaltumformen Technische Lieferbedingungen;Englische Fassung EN 10338:2015,Englische bersetzung von DIN EN 10338:2015-10Produits plats non revtus lamins chaud et froid en aciers multiphass pour formage froid Conditions techniques de livraison;Version anglaise EN 10338:2015,Traduction an
4、glaise de DIN EN 10338:2015-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.DDocument comprises 17 pages 09.15DIN EN 10338:2015-10 2 A comma is used as the decimal marker. National foreword This document (EN 10338:2015) has been prepared by Technical Co
5、mmittee 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 DIN-Normenausschuss Eisen und Stahl (DIN Standards Committee Iron and Steel), Working Committee NA 021-00-01-01 UA Flache
6、rzeugnisse aus Stahl zum Kaltumformen. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 10275 DIN EN ISO 10275 National Annex NA (informative) Bibliography DIN EN ISO 10275, Metallic materials Sheet and strip Determination of tensile str
7、ain hardening exponent EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10338 July 2015 ICS 77.140.50 English Version Hot rolled and cold rolled non-coated products of multiphase steels for cold forming - Technical delivery conditions Produits plats non revtus lamins chaud et froid en aciers mul
8、tiphass pour formage froid - Conditions techniques de livraison armgewalzt e un d altgewalzte Flacherzeugnisse ohne berzug aus Mehrphasensthlen zum Kaltumformen - Technische Lieferbedingungen This European Standard was approved by CEN on 16 April 2015. CEN members are bound to comply with the CEN/CE
9、NELEC 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 CEN-CENELEC Management Centre
10、 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 CEN-CENELEC Management Centre has the same status as the o
11、fficial versions. CEN members are the national 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, Netherlan
12、ds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United 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
13、of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10338:2015 EW kEN 10338:2015 (E) 2 Contents Page European foreword .3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Dimensions and tolerances 5 5 Classification and designation .6
14、5.1 Classification 6 5.2 Designation 6 6 Information to be supplied by the purchaser at the time of enquiry and order 6 6.1 Mandatory information 6 6.2 Options .7 7 Manufacturing process and delivery conditions 7 7.1 Manufacturing process .7 7.2 Delivery conditions 7 8 Requirements .8 8.1 Chemical c
15、omposition 8 8.2 Mechanical properties 10 8.3 Surface properties 11 8.3.1 Hot rolled products . 11 8.3.2 Cold rolled products . 12 8.4 Suitability for surface coating . 12 8.5 Weldability . 12 9 Inspection 12 9.1 Types of inspection and inspection documents . 12 9.2 Test units . 12 9.3 Tests to be c
16、arried out . 12 9.4 Sampling 13 9.5 Test methods . 13 9.5.1 Tensile test 13 9.5.2 Strain hardening exponent 13 9.5.3 Bake Hardening index 13 9.5.4 Surface inspection 13 9.6 Retests . 13 10 Marking 14 11 Packing 14 12 Storage and transportation 14 13 Disputes . 14 Bibliography . 15 DIN EN 10338:2015-
17、10 EN 10338:2015 (E) 3 European foreword This document (EN 10338:2015) has been prepared by Technical Committee ECISS/TC 109 “Coated and uncoated flat products to be used for cold forming”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national stan
18、dard, either by publication of an identical text or by endorsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights
19、. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyp
20、rus, 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 the Unite
21、d Kingdom. DIN EN 10338:2015-10 EN 10338:2015 (E) 4 1 Scope This European Standard applies to hot rolled and cold rolled non-coated steel flat products made of multiphase steels for cold forming. It covers cold rolled products of thicknesses t 0,80 to 2,20 0/+ 0,10 Mn 2,50 0/+ 0,10 2,5 to 2,9 0/+0,1
22、2 P 0,080 0/+ 0,01 S 0,015 0/+ 0,003 Al 2,00 0/+ 0,10 Cr + Mo 1,40 0/+ 0,06 Nb + Ti 0,25 0/+ 0,025 V 0,22 0/+ 0,02 B 0,01 0/+ 0,001 DIN EN 10338:2015-10 EN 10338:2015 (E) 10 8.2 Mechanical properties 8.2.1 The mechanical properties of the products shall comply with the requirements of Table 4 or Tab
23、le 5. 8.2.2 The values for the tensile test apply for longitudinal test pieces. 8.2.3 The strain hardening exponent n shall be determined in the range of homogeneous deformation, within the strain range of 10 % to UE (Uniform Elongation) %. The uniform elongation of the material to be tested may be
24、lower than 20 %. In this case the upper limit of the strain range is the uniform elongation (Ag) and the lower limit of the strain range shall be agreed at the moment of order. 8.2.4 The mechanical properties in Table 4 and Table 5 are valid for 3 months, beginning from the agreed availability by th
25、e producer. Table 4 Hot rolled products - Mechanical properties Steel grade Proof strength Tensile strength Elongation Strain hardening exponent n10-UERp 0,2RmA80A5for thickness 3 mm Steel name Steel number MPaaMPaamin. % min.% min.min. ferritic-bainitic steels (F) HDT450F 1.0961 300 to 420 450 24 2
26、7 HDT580F 1.0994 460 to 620 580 15 17 dual-phase steel (X) HDT580X 1.0936 330 to 450 580 19 23 0,13 complex-phase steel (C) HDT760C 1.0998 660 to 830 760 10 12 martensitic steel (MS) HDT1180G1 1.0960 900 to 1200 1180 4 5 a1 MPa = 1 N/mm2DIN EN 10338:2015-10 EN 10338:2015 (E) 11 Table 5 Cold rolled p
27、roducts - Mechanical properties Steel grade Proof strength Tensile strength Elongation Strain hardening exponent Bake hardening index Rp 0,2RmA80bn10 - UEBH2Steel name Steel number MPaaMPaa% MPaamin. min. min. min. dual-phase steels (X) HCT450X 1.0937 260 to 340 450 27 0,16 30 HCT490X 1.0939 290 to
28、380 490 24 0,15 30 HCT590X 1.0941 330 to 430 590 20 0,14 30 HCT780X 1.0943 440 to 550 780 14 - 30 HCT980X 1.0944 590 to 740 980 10 30 HCT980XGc1.0997 700 to 850 980 8 30 transformation induced plasticity steels (T) HCT690T 1.0947 400 to 520 690 23 0,19 40 HCT780T 1.0948 450 to 570 780 21 0,16 40 com
29、plex-phase steels (C) HCT600C 1.0953 350 to 500 600 16 30 HCT780C 1.0954 570 to 720 780 10 30 HCT980C 1.0955 780 to 950 980 6 30 multiphase steel (MP) HCT1180G2 1.0969 900 to 1150 1180 4 30 a1 MPa = 1 N/mm2. bDecreased minimum elongation values apply for product thicknesst 0,60 mm (minus 2 units).cX
30、G means dual-phase with increased yield strength. 8.3 Surface properties 8.3.1 Hot rolled products The products shall not have any slivers, blow holes, seams, cracks or scratches which would adversely affect their use. Pores, small pits, small marks, small scratches, kinks from pay-off reels and a s
31、light coloration are permitted. The imperfections shall not be of such an extent that they might run the risk of causing failure or damage to tooling or welding difficulties when in use. The surface quality of the unwound coil is assessed as for sheets. However, the percentage of surface imperfectio
32、ns is generally greater than when supplied in sheets. The maximum percentage of permissible rejections shall be fixed by special agreement at the time of enquiry and order. DIN EN 10338:2015-10 EN 10338:2015 (E) 12 8.3.2 Cold rolled products 8.3.2.1 Surface quality The products are supplied with the
33、 surface quality A as defined in EN 10130. 8.3.2.2 Surface finish The requirements of EN 10130 apply. 8.4 Suitability for surface coating The products may be intended for metallic coating by hot dipping or electro deposition and/or organic or other coatings. When a coating is required, it shall be s
34、pecified at the time of order. 8.5 Weldability The welding process should be specified at the time of enquiry and order, essentially in the case of gas welding. For non-descaled hot rolled products, the welding process shall take into account the presence of a layer of scale. 9 Inspection 9.1 Types
35、of inspection and inspection documents 9.1.1 Unless otherwise specified at the time of enquiry and order (see 9.1.2 and 9.1.3), the products shall be delivered with non-specific inspection without inspection document. 9.1.2 Specific testing in accordance with the requirements in 9.2 to 9.6 may be sp
36、ecified at the time of enquiry and order. 9.1.3 The type of inspection document to be delivered in accordance with EN 10204:2004, if requested for non-specific inspection (inspection document 2.1 or 2.2) or mandatory to be delivered for specific inspection (inspection document 3.1 or 3.2), shall be
37、specified at the time of enquiry and order. If an inspection certificate 3.2 is specified, the purchaser shall notify the manufacturer of the name and address of the organisation or person who is to carry out the inspection and produce the inspection document. It shall also be agreed which party sha
38、ll issue the certificate. 9.2 Test units The test unit consists of a maximum of 20 t or a fraction of 20 t of flat products of the same grade and nominal thickness, and surface condition. In the case of strip, a coil weighing more than 20 t shall be regarded as one test unit. 9.3 Tests to be carried
39、 out One series of tests shall be carried out per test unit as specified in 9.2 to determine: the mechanical properties (see 9.5.1); the n-values, if specified in Table 4 or Table 5 (see 9.5.2); the Bake-Hardening Index BH2, in Table 5 (see 9.5.3). By agreement at the time of enquiry and order, the
40、manufacturer may determine the tensile properties and/or Bake Hardening Index BH2by calculation with an approved method. DINEN 10338:2015-10EN 10338:2015 (E) 13 9.4 Sampling 9.4.1 In the case of strip, the samples shall be taken from the beginning or the end of the coil. In the case of sheet and cut
41、 lengths, sampling shall be in accordance with EN ISO 377:2013. 9.4.2 The sample for the tensile test (see 9.5.1) shall be taken in the specified direction (see 8.2.2) at a distance of at least 50 mm from the edge of the product. 9.4.3 All the samples shall be taken in such a way that the results of
42、 the tests are not affected. 9.5 Test methods 9.5.1 Tensile test The tensile test shall be carried out as specified in EN ISO 6892-1:2009. For products with a thickness less than 3 mm the test piece used (initial gauge length L0= 80 mm, width b = 20 mm) shall be of type 2 as described in Annex B of
43、EN ISO 6892-1:2009. For products with a thickness greater than or equal to 3 mm the test piece used is the proportional test piece with an initial gauge length L0given by the formula: 0065,5 SL = where S0is the original cross-sectional area of the parallel length of the test piece; the maximum paral
44、lel width is 30 mm and the thickness that of the sheet. Test pieces may be non-proportional but in case of dispute proportional test pieces shall be used. 9.5.2 Strain hardening exponent The determination of the strain hardening exponent n shall be carried out in accordance with ISO 10275. 9.5.3 Bak
45、e Hardening index The determination of the yield strength increase by the effect of heat treatment (Bake-Hardening-Index BH2) shall be carried out in accordance with EN 10325:2006. 9.5.4 Surface inspection 9.5.4.1 The product surface shall be visually inspected for verification of conformance with t
46、he requirements in 8.3. 9.5.4.2 Unless otherwise agreed at the time of enquiry and order, only one surface shall be inspected at the manufacturers works. If requested, the manufacturer shall inform the purchaser whether the inspected surface is the top surface or the bottom surface. Small edge crack
47、s which may occur in the case of mill edges are not justification for rejection. 9.5.4.3 Roughness (Ra) measurements, where applicable shall be carried out in accordance with EN 10049 9.6 Retests The requirements of EN 10021:2006 shall apply. In the case of coils, the retest specimens shall be taken
48、 from a distance of at least one lap away, but with a maximum of 20 m from the end of the coil. DINEN 10338:2015-10EN 10338:2015 (E) 14 10 Marking A label shall be attached to each coil or bundle containing at least the following information: a) name or mark of the manufacturers works; b) designatio
49、n (see 5.2); c) nominal dimensions of the product; d) identification number; e) order number; f) mass of the coil or bundle. Marking of the products by branding may be agreed upon at the time of order. 11 Packing The packing requirements shall be agreed when ordering. 12 Storage and transportation Moisture, in particular condensation between the sheets, laps of the coil or other adjacent parts can lead to the formation of corrosion products. As a precaution, the products should be transported and s
