1、STD-CEN EN L0271-ENGL 1978 3404589 O188b48 714 9 RATIFIED EUROPEAN TEXT EN10271: 1998 European Standards only exist formally as national transpositions (.e. a BS EN for the UK) of a commonly agreed “ratified“ text. This document is a ratified text which will shortly be published as a BS EN. It is be
2、ing made available in advance of its formal publication to give interested parties early access to the technical information which the BS EN will contain. When the BS EN is formally published it will be supplied to you autoinatically, without any additional charge. Purchasers of this ratified text s
3、hould be aware of the following limitations when using the document. The BS EN may contain additional information in the national foreword or national annex, Full rights conferred by compliance with the standard may only be granted by reference to the formal national transposition of the text as a B
4、S EN. This ratified text was approved by CENKENELEC in its three official languages on the date given below. Under CENKENELEC rules, BSI is obliged to publish its national transposition within six months of this date. This ratified text was approved on 1998-1 1-05 n - -I - NO COPYING WITHOUT BSI PER
5、MISSION EXCEPT AS PERMITTED BY COPYRIGH LAW EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10271 November 1998 ICs 77.140.50 Descriptors: steel products, metal plates, cold rolled products, coated metal, galvanizing, nickel coatings, electrodeposited coatings, designation, chemical composition
6、, grades: quality, mechanical properties, surface treatment, inspection, tests, marking English version Electrolytically zinc-nickel (ZN) coated steel flat products - Technical delivery conditions Produits plats en acier, redtus de zinc-nickel (ZN) par voie Alectroiytique - Condiions techniques de l
7、ivraison flacherzeugnisse aus Ctahlmit elektrolytisch abgeschiedenen Zink-Nickel (ZN)-Ubengen - Technische Ueferbedingungen This European Standard was approved by CEN on 5 November 1998. CEN members are bound to comply with the CEWCENELEC Intemal Regulations which stipulate the conditions for giving
8、 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 venions
9、 (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, Czec
10、h Republic, Denmark. Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal. Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMiTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG Central Secretariat: rue d
11、e Stassart, 36 B-1050 Brussels Q 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10271:1998 E _ STD-CEN EN 10271-ENGL 1778 W 3404587 OL88b50 572 Page 2 EN 10271:1998 Contents 1 2 3 4 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10
12、5.11 5.12 5.13 5.14 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 7 8 9 10 Foreword Scope Nonnative references Definitions Designation Requirements General Steelmaking and manufacturing process Deoxidation Chemical composition Delivery condition Choice of properties Mechanical properties Stretcher strain marks Coat
13、ings Adhesion of coating Surface characteristics Surface treatment Applications Mass, tolerances on dimensions and shape Testing General Test units Number of tests Sampling Test methods Retests Inspection documents Marking Packing Storage and transportation Information to be supplied by the purchase
14、r Annex A (informativ) : Bibliography Annex B (normative): Reference method for the determination of the zinc-nickel coating mass and the zinc-nickel coating composition 3 4 5 6 7 8 8 8 8 8 8 8 14 14 15 16 17 17 18 a 18 18 18 19 19 19 20 20 20 21 21 21 23 24 Page 3 EN 10271:1998 Forsword This Europe
15、an Standard has been prepared by Technical Committee ECISS/TC 27 “Surface coated flat products -Qualities, dimensions, tolerances and specific testsff, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identi
16、cal text or by endorsement, at the latest by May 1999, and conflicting national standards shall be withdrawn at the latest by May 1999. ECISS/TC 27 met on 1996-11-26 in Dsseldorf and agreed on the text for submission of this draft European Standard to Formal Vote. The following countries were repres
17、ented in that meeting: Austria, Belgium, France, Germany, Netherlands and United Kingdom. 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, Finla
18、nd, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands , Norway, Portugal , Spain, Sweden, Switzerland and the United Kingdom. STD-CEN EN L027L-ENGL 1778 3404589 OLBBb52 345 = Page 4 EN 10271:1998 1 Scope 1.1 This European Standard specifies requirements for contin- uously ele
19、ctrolytic zinc-nickel coated cold rolled flat products of low carbon steels suitable for cold forming according to ta- ble l and table 2 in rolled widths r 600 m and thicknesses from 0,35 mm up to and including 3 mm, delivered as strip (in coil form), sheet, slit strip or cut lengths obtained from s
20、lit strip or sheet. The coating is composed of Zn with a Ni-content of 10,5 % to 13 %. 1.2 requirements of continuously electrolytic zinc-nickel coated cold rolled flat products of This European Standard may also be applied to the coating a) steels according to EN 10139 (cold rolled strip in rolled
21、widths e 600 m), b) other types of low carbon steel for cold forming, c) steels normally characterized by minimum yield strength values in addition to formability parameters, e. g. - steels with high yield strength and improved formability according to EN 10268 or other microalloyed steels, - rephos
22、phorized steels and bake-hardening steels, - general purpose structural steels. 1.3 Standard may be applied to the coating requirements of continuously electrolytic zinc-nickel coated hot-rolled steel flat products (e.g. according to EN 10025, EN 10111, EN 10149-1 to EN 10149-3 etc. ) . By special a
23、greement at the time of ordering this European 1.4 The coating masses, surface qualities and surface finishes are given in 5.9, 5.11 and table 3. As the mass of the zinc- nickel coating applied is relatively small, the material is not intended to withstand outside exposure without further chemical t
24、reatment and painting. 1.5 This European Standard is not applicable to - hot-dip zinc coated steel strip and sheet (see EN 10142 and EN 10147), - electrolytically zinc coated cold rolled flat products (see EN 10152), - continuously hot-dip aluminium-silicon (AS) coated steel strip and sheet (see EN
25、10154). - continuously organic coated steel flat products (see EN 10169), STD.CEN EN 10271-ENGL 1778 9 3404587 O188b53 281 Page 5 EN 10271: 1998 - continuously hot-dip zinc-aluminium (ZA) coated steel strip and sheet (see EN 102141, - continuously hot-dip aluminium-zinc (AZ) coated steel strip and s
26、heet (see EN 10215). 2 Normative References This European Standard incorporates by dated or undated refer- ence provisions from other publications. These normative refer- ence are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, sub- sequen
27、t amendments to or revisions of any of these publications apply to this draft European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of ENV 606 EN 10002-1 EN 10002-2 EN 10002-4 EN 10020 EN 10021 EN 10027-1 EN 10027-2 EN 10079 EN 10130 the
28、publication referred to applies. Bar coded transport and handling labels for steel products Metallic materials - Tensile testing - Part 1: Method of testing (at ambient temperature) “including Addendum AC1: 1990“ Metallic materials - Tensile testing - Part 2: Veri- fication of the force measuring sy
29、stem of the ten- sile testing machines Metallic materials - Tensile testing - Part 4: Veri- fication of extensometers used in uniaxial testing Definition and classification of grades of steel General technical delivery requirements for steel and iron products Designation systems for steels - Part 1:
30、 Steel names , principal symbols Designation systems for steels - Part 2: Numerical system Definition of steel products Cold rolled low carbon steel flat products for cold forming - Technical delivery conditions Page 6 EN 10271:1998 EN 10131 Cold-rolled non-coated flat products in low carbon steel f
31、or cold forming - tolerances on dimensions and shape EN 10139 Cold rolled uncoated low carbon steel strip for cold forming - Technical delivery conditions EN 10204 Metallic products - Types of inspection documents (includes amendment Al : 1995) EN 10268 Cold-rolled flat products made of high yield s
32、trength steels for cold forming - General technical delivery conditions CR 10260 ECISS IC 10- Designation systems for steel - Ad- ditional symbols for steel names ERONORM 12 (1955)” Bend test for steel sheet and strip less than 3 mm thick IS0 10113 Metallic materials - Sheet and strip - Determinatio
33、n of plastic strain ratio IS0 10275 Metallic materials - Sheet and strip - Determination of tensile strain hardening exponent 3 Definitions For the purposes of this European Standard the following defini- tion applies in addition to the definitions in EN 10020, EN 10021, EN 10079 and EN 10204. 3.1 E
34、lectrolytic zinc-nickel coating (ZN) : Application of a zinc-nickel coating by electrolysis on a suitably prepared steel surface from an aqueous salt solution by the use of an electric current. NOTE: Flat products may have a zinc-nickel coating on one or both surfaces. If both surfaces are zinc-nick
35、el coated, a different coating thickness may be applied on each side (this process being referred to as differential zinc-nickel coating). Until they are transformed into European Standards, either the EURONORMS referred to or the corresponding national standards may be applied. STD.CEN EN 10271-ENG
36、L 1998 3404589 O188b55 054 Page 7 EN 10271: 1998 4 maignation 4.1 The steel names are allocated in accordance with EN 10027-1 and CR 10260 - the steel numbers are allocated in accordance with EN 10027-2. 4.2 The products covered by this European Standard shall be designated as follows in the order g
37、iven: a) Type of product (e. g. strip, sheet, cut length), b) Number of this standard (EN 10271), c) Steel name or steel number and symbol for the type of electrolytically coating (see table 1 and table 2), d) Numbers denoting the minimum coating thickness on each surface (e. g. 50/50 = minimum coat
38、ing thickness of 5,O .im on each surface, see table 3, 5.9.2, 5.9.4 and 5.9.5). e) Letters A or B indicating the surface quality (see 5.11.2). f) Letters denoting the surface treatment (see 5.12 and table 4). Example 1: Designation of strip made of steel DC03+ZN, (1.0347+ZN), electrolytically zinc-n
39、ickel coated with a nominal thickness of 5,O pm on each surface (50/50), surface quality A, surface treatment oiled (O): Strip EN 10271-DCO3+ZN50/50-A-O Strip EN 10271-1.0347+2N50/50-A-O or Example 2: Designation of sheet made of steel DC05+ZN (1.0312+ZN), electrolytically zinc-nickel coated with a
40、nominal thickness of 5,O pm on one surface and of 2,O pn on the other surface (50/20), surface quality B, surface treatment oiled (O). or Sheet EN 10 27 1 -DCOS+ZN50 / 2 O -8-0 Sheet EN 10271-1.0312+2N50/20-B-O 8 4.3 Where appropriate, additional information to the designa- tion as specified in 4.2
41、shall be given to describe clearly the delivery requirements (see clause 10). STD-CEN EN 10271-ENGL 1778 m 3404587 OLB8b5b T90 m Page 8 EN 10271: 1998 5 Requirements 5.1 General The requirements according to 5.2 to 5.5 and 5.13 apply to the steel substrates given in table 1 and table 2. For other st
42、eels used as substrate for electrolytically deposit- ed coatings of zinc-nickel (see 1.2 and 1.3) the requirements shall be based on the appropriate quality standard for the non-coated steel product. 5.2 Steelmaking and manufacturing processes Unless otherwise agreed at the time of ordering, the ste
43、elmaking and manufacturing processes are left to the discretion of the manufacturer. The purchaser shall be informed of these process- es, if he requires it. 5 o 3 Deoxidation The method of deoxidation shall be in accordance with that specified in table 1 and table 2. 5 4 Chemical composition The ch
44、emical composition based on ladle analysis shall be as given in table 1 and table 2. 5.5 Delivery condition The steel substrates are normally supplied in the skin-passed condition. By agreement at the time of the enquiry and order non skin-passed products may be supplied. 5.6 Choice of properties Th
45、e products covered by this European Standard shall comply with the requirements of table 1 and table 2. By agreement they may be delivered as suitable for making a particular part; in this case a maximum percentage of scrap may be agreed and acceptance on the basis of mechanical properties is not ap
46、plicable. 5.7 Mechanical properties 5.7.1 The mechanical properties are given in table 1 and table 2. STD.CEN EN 10271-ENGL 1998 m 3404589 0188b57 927 m Page 9 EN 10271:1998 NOTE: The properties in table 2 are those specified for cold rolled non-coated low carbon steel flat products according to EN
47、10130 with the exception of the Re, A, and n, values for the grades DCOI+ZN, DCOS+ZN and DC06+ZN which have been altered with respect to the influence of the electrolytical treatment on those properties. The mechanical properties are valid for the period specified in table 1 and table 2 from the dat
48、e on which the products are made available. The date of availability shall be notified to the purchaser with reasonable prior notice compatible with the validity of the mechanical properties. Prolonged storage of products of grade DCOl+ZN could result in some change in the mechanical properties lead
49、ing to a reduction in formability. 5.7.2 The tensile test shall be carried out according to the relevant standards for the substrate (e.g. location of samples). The tensile test values apply to transverse samples and relate to the test piece cross-section without zinc-nickel coating. Testing shall be carried out after coating. Double side coated products shall be tested with coating, single side coated products shall have the coating removed before testing. STDmCEN EN 10271-ENGL 1778 340tI587 018Bb57 7TT = Page 11 EN 10271: 1998 Notes to Table 1: 1) The mecha
