BS-EN-10214-1995.pdf

BRITISH STANDARD BS EN 10214:1995 Continuously hot-dip zinc-aluminium (ZA) coated steel strip and sheet Technical delivery conditions The European Standard EN 10214:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 10214:1995 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 August 1995 © BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference ISE/10 Draft for comment 92/43235 DC ISBN 0 580 24249 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ISE/10, Flat rolled steel products, upon which the following bodies were represented: British Railways Board British Steel Industry Cold Rolled Sections Association Society of Motor Manufacturers and Traders Limited The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Welded Steel Tube Association Coated Metals Limited Department of the Environment (Property Services Agency) International Tin Research Institute Metal Roof Deck Association National Association of Steel Stockholders National Centre of Tribology Paintmakers Association of Great Britain Ltd. Zinc Development Association Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 10214:1995 © BSI 08-1999i Contents Page Committees responsible Inside front cover National forewordii Foreword2 Text of EN 102143 List of references Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 10214:1995 ii © BSI 08-1999 National foreword This British Standard has been prepared by Technical Committee ISE/10 and is the English language version of EN 10214:1995 Coninuously hot-dip zinc-aluminium (ZA) coated steel strip and sheet Technical delivery conditions, published by the European Committee for Standardization (CEN). 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. Cross-references Publication referred toCorresponding British Standard EN 10002-1BS EN 10002 Tensile testing of metallic materials Part 1:1990 Method of test at ambient temperature EN 10020BS EN 10020:1991 Definition and classification of grades of steel EN 10021BS EN 10021:1993 General technical delivery requirements for steel and iron products BS EN 10027 Designation systems for steel EN 10027-1Part 1:1992 Steel names, principal symbols EN 10027-2Part 2:1992 Steel numbers EN 10079BS EN 10079:1993 Definition of steel products EN 10143BS EN 10143:1993 Continuously hot-dip metal coated steel sheet and strip. Tolerances on dimensions and shape EN 10204BS EN 10204:1991 Metallic products. Types of inspection documents Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 10214 February 1995 ICS 77.140.50 Descriptors: Iron- and steel products, metal plates, steel strips, steels, coated metal, continuous coating, hot dip coating, galvanizing, aluminium plating, designation, classifications, grades: quality, mechanical properties, finishing, quality, delivery, inspection, tests, marking English version Continuously hot-dip zinc-aluminium (ZA) coated steel strip and sheet Technical delivery conditions Bandes et tôles en acier revêtues à chaud en continu dalliage zinc-aluminium (ZA) Conditions techniques de livraison Kontinuierlich schmelztauchveredeltes Band und Blech aus Stahl mit Zink-Aluminium-Überzügen (ZA) Technische Lieferbedingungen This European Standard was approved by CEN on 1995-02-10. 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 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 has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1995 Copyright reserved to CEN members Ref. No. EN 10214:1995 E Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10214:1995 2 © BSI 08-1999 Foreword This European Standard was prepared by Technical Committee ECISS/TC 27, Surface coated steel flat products Qualities, dimensions, tolerances and specific tests, the secretariat of which is held by DIN. It is the first edition of European technical delivery conditions for continuously hot-dip zinc-aluminium (ZA) coated steel sheet and strip. The draft prEN 10214 was published for CEN enquiry in August 1992. At a meeting of ECISS/TC 27 on 16 March 1993 in Düsseldorf the text was agreed for the final edition of the European Standard. The following countries were represented at this meeting: Austria, Belgium, France, Germany, Netherlands, Sweden and United Kingdom. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 1995, and conflicting national standards shall be withdrawn at the latest by August 1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Designation3 5Classification of grades and types of delivery4 5.1Steel grades4 5.2Coatings4 5.3Coating finish5 5.4Surface quality5 5.5Surface treatment (temporary surface protection)6 6Requirements6 6.1Manufacturing process6 6.2Selection of properties6 6.3Mechanical properties6 6.4Freedom from coil breaks6 Page 6.5Stretcher strains (low carbon steels for cold forming)6 6.6Coating mass7 6.7Adhesion of coating7 6.8Surface condition7 6.9Dimensions, tolerances on dimensions and shape7 6.10 Suitability for further processing7 7Testing7 7.1General7 7.2Test units7 7.3Number of tests7 7.4Sampling8 7.5Test methods8 7.6Retests9 7.7Inspection documents9 8Marking9 9Packing9 10Storage and transportation9 11Disputes9 12Information to be supplied by the purchaser9 Annex A (normative) Reference method for determination of the coating mass10 Figure 1 Position of the samples for determining the mass of zinc-aluminium coating8 Table 1 Grades and mechanical properties of low carbon steels for cold forming4 Table 2 Grades and mechanical properties of structural steels5 Table 3 Available coatings and surface qualities5 Table 4 Coating mass7 Table 5 Bend test to determine the adhesion of the coating8 Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10214:1995 © BSI 08-19993 1 Scope 1.1 This European Standard specifies requirements for continuously hot-dip zinc-aluminium alloy coated flat products made of low carbon steels for cold forming (see Table 1) or of structural steels (see Table 2) in thicknesses k 3,0 mm. The thickness is the final thickness of the delivered product after coating. This European Standard applies to strip of all widths and to sheets cut from it (U 600 mm width) and cut lengths ( 1,50 k 3,0 mm DX51D + ZA00 DX52D + ZA00 DX53D + ZA00 DX54D + ZA00 S220GD + ZA01a S250GD + ZA01a S280GD + ZA1a2a S320GD + ZA1a2a S350GD + ZA1a2a S550GD + ZAcc a a: product thickness. b The mandrel diameter shall in all cases be augmented by 1a for the coating 300. c This steel grade shall not be subjected to the bend test. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10214:1995 © BSI 08-19999 7.6 Retests The requirements of EN 10021 shall apply. In the case of coils, the retest specimens shall be taken from a distance of at least one lap away, but with a maximum of 20 m from the end of the coil. 7.7 Inspection documents If agreed at the time of ordering, one of the inspection documents specified in EN 10204 shall be supplied. 8 Marking A label shall be attached to each coil or bundle containing at least the following information: name or mark of the manufacturers works; full designation (see 4.2); nominal dimensions of the product; identification number; order number; mass of the coil or bundle. 9 Packing If not otherwise agreed at the time of ordering the packing requirements for the product shall be left at the discretion of the supplier. 10 Storage and transportation 10.1 Moisture, in particular condensation between the sheets, laps of the coil or other adjacent parts made of hot-dip zinc-aluminium coated flat products can lead to the formation of corrosion products. The possible types of surface protection are given in 5.5. However if there is lengthy contact with moisture the protection may be reduced locally. As a precaution, the products should be transported and stored dry and protected from moisture. 10.2 During transportation, dark spots may appear on the coated surfaces as a result of friction. Generally, they only impair the appearance. Friction is reduced by oiling the products. However, the following precautionary measures should be taken: secure packing, laid flat, no local pressure spots. 11 Disputes EN 10021 is applicable to disputes after delivery and their settlement. 12 Information to be supplied by the purchaser The following information is required from the purchaser so that the manufacturer may supply the products to conform with the requirements of this standard: a) product type (strip, sheet, cut length); b) nominal dimensions (thickness, width and, in the case of sheet and cut lengths, length); c) quantity; d) complete designation (see 4.2); e) limiting mass and sizes of the coils and individual bundles of sheets; f) any products desired with different coating masses on each surface (see 5.2.2); g) any low carbon steel products suitable for the manufacture of a specific part (see 6.2.2); h) any products supplied free from coil breaks (see 6.4); i) any maximum or minimum value for the coating mass per product surface (see 6.6.2); j) notification of which surface has been inspected (see 6.8.1); k) any testing at the manufacturers works (see 7.1.1 and 7.1.2); l) any supply of an inspection document and type of document (see 7.7); m) any requirements for packing (see clause 9). Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10214:1995 10 © BSI 08-1999 Annex A (normative) Reference method for determination of the coating mass A.1 Principle The sample shall be at least 5 000 mm2 in area. Using a sample with a surface area of 5 000 mm2, the loss of mass in grams when the coating is dissolved, multiplied by 200, will represent the coating mass in grams per square metre of the product, including both sides. A.2 Reagent and preparation of the solution Reagent: Hydrochloric acid (HCl Ô20 = 1,19 g/cm3) Hexamethylenetetramine Preparation of the solution: The hydrochloric acid is diluted with deionized or distilled water in the ratio one part pure HCl to one part water (50 % dilution). Hexamethylenetetramine is then added, stirring, in the ratio of 3,5 g per litre of dilute hydrochloric acid solution. This prepared solution permits the execution of numerous successive dissolutions under satisfactory conditions of attack of the coating, both from the point of view of speed and accuracy. A.3 Apparatus Balance capable of weighing samples to an accuracy of 0,01 g. For the test, use a take-off device. A.4 Procedure The following operations are applied to each sample: a) if necessary, degrease the sample with an organic solvent which will not attack the coating, then dry the sample; b) weigh the sample to an accuracy of 0,01 g; c) place the sample in the hydrochloric acid solution with hexamethylenetetramine inhibitor at ambient temperature (20 °C to 25 °C). Leave the sample immersed in the solution until the release of hydrogen ceases or only a few bubbles are released; d) after the attack, the sample is washed and brushed under running water, dried with a cloth and then by heating to around 100 °C and cooled or dried by blowing with warm air; e) weigh the sample again to an accuracy of 0,01 g; f) determine the difference between the mass of the coated sample and that of the sample without its coating. This difference, calculated in grams, represents the mass m of the coating. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 10214:1995 © BSI 08-1999 List of references See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:30:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 10214:1995 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee