1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 10271:1999 The Euro
2、pean Standard EN 10271:1998 has the status of a British Standard ICS 77.140.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Electrolytically zinc-nickel (ZN) coated steel flat products Technical delivery conditionsBS EN 10271:1999 This British Standard, having been prepared
3、 under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 March 1999 BSI 03-1999 ISBN 0 580 30856 1 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard is the
4、English language version of EN 10271:1998. The UK participation in its preparation was entrusted by Technical Committee ISE/10, Flat rolled steel products, to Subcommittee ISE/10/8, Coated steel flat rolled products, which has the responsibility to: aid enquirers to understand the text; present to t
5、he 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 subcommittee can be obtained on reque
6、st 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 th
7、e 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. Sum
8、mary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36,
9、 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 10271:1998 E EUROPEAN STANDARD EN 10271 NORME EUROPE ENNE EUROPA ISCHE NORM November 1998 ICS 77.140.50 Descriptors: Steel products, metal plates, cold rolled pr
10、oducts, coated metal, galvanizing, nickel coatings, electrodeposited coatings, designation, chemical composition, grades: quality, mechanical properties, surface treatment, inspection, tests, marking English version Electrolytically zinc-nickel (ZN) coated steel flat products Technical delivery cond
11、itions Produits plats en acier, reve tus de zinc-nickel (ZN) par voie e lectrolytique Conditions techniques de livraison Flacherzeugnisse aus Stahl mit elektrolytisch abgeschiedenen Zink-Nickel(ZN)-U berzu gen Technische Lieferbedingungen This European Standard was approved by CEN on 5 November 1998
12、. 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
13、 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
14、 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.Page 2 EN 102
15、71:1998 BSI 03-1999 Foreword This European Standard has been prepared by Technical Committee ECISS/TC 27, Surface coated flat products Qualities, dimensions, tolerances and specific tests, the Secretariat of which is held by DIN. This European Standard shall be given the status of a national standar
16、d, either by publication of an identical 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 Du sseldorf and agreed on the text for submission of this draft European Standard to Formal Vo
17、te. The following countries were represented 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,
18、Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Designation 4 5 Requirements 4 5.1
19、General 4 5.2 Steelmaking and manufacturing processes 4 5.3 Deoxidation 4 5.4 Chemical composition 4 5.5 Delivery condition 4 5.6 Choice of properties 4 5.7 Mechanical properties 4 5.8 Stretcher strain marks 7 5.9 Coatings 7 5.10 Adhesion of coating 7 5.11 Surface characteristics 7 5.12 Surface trea
20、tment (Surface protection) 8 5.13 Applications 8 5.14 Mass, tolerances on dimensions and shape 8 6 Testing 8 6.1 General 8 6.2 Test units 8 6.3 Number of tests 8 6.4 Sampling 9 6.5 Test methods 9 6.6 Retests 9 6.7 Inspection documents 9 7 Marking 9 8 Packing 9 9 Storage and transportation 9 10 Infor
21、mation to be supplied by the purchaser 10 Annex A (informative) Bibliography 11 Annex B (normative) Reference method for determination of the zinc-nickel coating mass and the zinc-nickel coating composition 11Page 3 EN 10271:1998 BSI 03-1999 1) Until they are transformed into European Standards, eit
22、her the EURONORMS referred to or the corresponding national standards may be applied. 1 Scope 1.1 This European Standard specifies requirements for continuously electrolytic zinc-nickel coated cold rolled flat products of low carbon steels suitable for cold forming according to Table 1 and Table 2 i
23、n rolled widths$ 600 mm 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 slit strip or sheet. The coating is composed of Zn with a Ni-content of 10.5 % to 13 %. 1.2 This European Standard may also be applied to t
24、he coating requirements of continuously electrolytic zinc-nickel coated cold rolled flat products of: a) steels according to EN 10139 (cold rolled strip in rolled widths 600 mm); b) other types of low carbon steel for cold forming; c) steels normally characterized by minimum yield strength values in
25、 addition to formability parameters, e.g: steels with high yield strength and improved formability according to EN 10268 or other microalloyed steels; rephosphorized steels and bake-hardening steels; general purpose structural steels. 1.3 By special agreement at the time of ordering this European St
26、andard 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.). 1.4 The coating masses, surface qualities and surface finishes are given in 5.9, 5.11 and Table 3. A
27、s the mass of the zinc-nickel coating applied is relatively small, the material is not intended to withstand outside exposure without further chemical treatment 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); electr
28、olytically zinc coated cold rolled flat products (see EN 10152); continuously hot-dip aluminium-silicon (AS) coated steel strip and sheet (see EN 10154); continuously organic coated steel flat products (see EN 10169); continuously hot-dip zinc-aluminium (ZA) coated steel strip and sheet (see EN 1021
29、4); continuously hot-dip aluminium-zinc (AZ) coated steel strip and sheet (see EN 10215). 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative reference are cited at the appropriate places in the text and the pub
30、lications are listed hereafter. For dated references, subsequent 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 the publication referred to applies. ENV
31、 606, Bar coded transport and handling labels for steel products. EN 10002-1, Metallic materials Tensile testing Part 1: Method of testing (at ambient temperature) including Addendum AC1:1990. EN 10002-2, Metallic materials Tensile testing Part 2: Verification of the force measuring system of the te
32、nsile testing machines. EN 10002-4, Metallic materials Tensile testing Part 4: Verification of extensometers used in uniaxial testing. EN 10020, Definition and classification of grades of steel. EN 10021, General technical delivery requirements for steel and iron products. EN 10027-1, Designation sy
33、stems for steels Part 1: Steel names, principal symbols EN 10027-2, Designation systems for steels Part 2: Numerical system. EN 10079, Definition of steel products. EN 10130, Cold rolled low carbon steel flat products for cold forming Technical delivery conditions. EN 10131, Cold-rolled non-coated f
34、lat products in low carbon steel for 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 A1:1995). EN 10268, Cold-rolled fl
35、at products made of high yield strength steels for cold forming General technical delivery conditions. CR 10260 ECISS IC 10, Designation systems for steel Additional symbols for steel names. EURONORM 12 (1955) 1) , Bend test for steel sheet and strip less than 3 mm thick ISO 10113, Metallic material
36、s Sheet and strip Determination of plastic strain ratio. ISO 10275, Metallic materials Sheet and strip Determination of tensile strain hardening exponent.Page 4 EN 10271:1998 BSI 03-1999 3 Definitions For the purposes of this European Standard the following definition applies in addition to the defi
37、nitions in EN 10020, EN 10021, EN 10079 and EN 10204. 3.1 electrolytic 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
38、on one or both surfaces. If both surfaces are zinc-nickel coated, a different coating thickness may be applied on each side (this process being referred to as differential zinc-nickel coating). 4 Designation 4.1 The steel names are allocated in accordance with EN 10027-1 and CR 10260 the steel numbe
39、rs 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 given: 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 el
40、ectrolytically coating (see Table 1 and Table 2); d) numbers denoting the minimum coating thickness on each surface (e.g. 50/50 = minimum coating thickness of 5.0mm 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 denoti
41、ng the surface treatment (see 5.12 and Table 4). Example 1: Designation of strip made of steel DC03+ZN, (1.0347+ZN), electrolytically zinc-nickel coated with a nominal thickness of 5.0mm on each surface (50/50), surface quality A, surface treatment oiled (O): Strip EN 10271-DC03+ZN50/50-A-O or Strip
42、 EN 10271-1.0347+ZN50/50-A-O Example 2: Designation of sheet made of steel DC05+ZN (1.0312+ZN), electrolytically zinc-nickel coated with a nominal thickness of 5.0mm on one surface and of 2.0mm on the other surface (50/20), surface quality B, surface treatment oiled (O). Sheet EN 10271-DC05+ZN50/20-
43、B-O or Sheet EN 10271-1.0312+ZN50/20-B-O 4.3 Where appropriate, additional information to the designation as specified in 4.2 shall be given to describe clearly the delivery requirements (see clause 10). 5 Requirements 5.1 General The requirements according to 5.2 to 5.5 and 5.13 apply to the steel
44、substrates given in Table 1 and Table 2. For other steels used as substrate for electrolytically deposited 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 Unles
45、s otherwise agreed at the time of ordering, the steelmaking and manufacturing processes are left to the discretion of the manufacturer. The purchaser shall be informed of these processes, if he requires it. 5.3 Deoxidation The method of deoxidation shall be in accordance with that specified in Table
46、 1 and Table 2. 5.4 Chemical composition The chemical 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 produc
47、ts may be supplied. 5.6 Choice of properties The 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
48、on the basis of mechanical properties is not applicable. 5.7 Mechanical properties 5.7.1 The mechanical properties are given in Table 1 and Table 2. NOTE The properties in Table 2 are those specified for cold rolled non-coated low carbon steel flat products according to EN 10130 with the exception o
49、f the R e , A 80 and n 90 values for the grades DC04+ZN, DC05+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 date 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 produ
