EN 10079

BRITISH STANDARD BS EN 10079:1993 Definition of steel products The European Standard EN 10079:1992 has the status of a British Standard BS EN 10079:1993 This British Standard, having been prepared under the direction of the Iron and Steel Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 January 1993 © BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference ISM/32 Draft for comment 89/44983 DC ISBN 0 580 20340 9 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association française de normalisation Germany Deutsches Institut für Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portuguès da Qualidade Spain Asociación Española de Normalización y Certificación Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date Comments BS EN 10079:1993 © BSI 02-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN 10079 5 National annex NA (informative) Committees responsible 30 National annex NB (informative) Cross-references 30 BS EN 10079:1993 ii © BSI 02-1999 National foreword This British Standard has been prepared under the direction of the Iron and Steel Standards Policy Committee and is the English language version of EN 10079:1992 Definition of steel products, published by the European Committee for Standardization (CEN). It supersedes BS 6562-2:1986 which is withdrawn. 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. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 30 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. EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 10079 October 1992 UDC 669.14-4:001.4 Descriptors: Iron and steel products, steel products, definitions English version Definition of steel products Définition des produits en acier Begriffsbestimmungen für Stahlerzeugnisse This European Standard was approved by CEN on 1992-09-25. 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. The European Standards exist 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 © 1992 Copyright reserved to CEN members Ref. No. EN 10079:1992 E EN 10079:1992 © BSI 02-19992 Foreword This European Standard was prepared by the ECISS Technical Committee 6B (ECISS/TC6B) “Definition and classification of steel products”, the Secretariat of which is held by the Association Française de Normalisation (AFNOR). This European Standard was established on the basis of the following documents: Given the various classification systems existing in Europe, eg the Customs Cooperation Council and that in EURONORM 79:1982 it was agreed by ECISS/TC6B at its 3rd and 4th meetings that this European Standard should deal only with definitions for steel products and abandon the concept of classification. It is for each organisation, eg statistics, customs, to organise their own classifications according to their specific requirements. This European Standard was approved by CEN on 1991-11-21. 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 United Kingdom. Contents Page Foreword 2 1 Scope 5 2 References 5 3 Liquid steel 5 4 Ingots and semi finished products 5 4.1 Ingots 5 4.2 Semi finished products 5 4.2.1 Semi finished products of square cross section 5 4.2.2 Semi finished products of rectangular cross section 5 4.2.3 Flat semi finished products 5 Page 4.2.4 Round semi finished products 5 4.2.5 Blanks for sections 5 5 Flat products 6 5.1 Definition 6 5.2 Uncoated flat products 6 5.2.1 Hot rolled uncoated flat products 6 5.2.2 Cold rolled uncoated flat products 6 5.3 Electrical steels 7 5.3.1 Non oriented grain electrical steels 7 5.3.2 Grain oriented electrical steels 7 5.4 Tin mill and allied products for packaging 7 5.4.1 Blackplate 7 5.4.2 Tinplate 7 5.4.3 Tinned sheet and strip 7 5.4.4 Electrolytic chromium/chromium oxide coated steel (ECCS) 7 5.5 Coated hot or cold rolled flat products 7 5.5.1 Metal coated sheet and strip 8 5.5.2 Sheet and strip with organic coatings 8 5.5.3 Sheet and strip with miscellaneous inorganic coatings 8 5.6 Profiled sheet 8 5.7 Composite products 8 6 Long products 9 6.1 Definition 9 6.2 Rod 9 6.3 Wire 9 6.4 Hot finished bars 9 6.4.1 Hot rolled bars 9 6.4.2 Forged bars 10 6.4.3 Hollow mining drill bars 10 6.5 Bright products 10 6.5.1 Drawn products 10 6.5.2 Turned products 10 6.5.3 Ground products 10 6.6 Deformed products for reinforcement and prestressing of concrete 10 6.6.1 Rod 10 6.6.2 Bars 10 6.6.3 Wire 10 6.7 Hot rolled sections 10 6.7.1 Railway materials 10 6.7.2 Piling 11 6.7.3 Mining frame sections 11 6.7.4 Heavy sections 15 — EURONORM 79:1982 Definition and classification of steel products by shape and dimension — ISO 6929:1987 Steel products — Definition and classification. EN 10079:1992 © BSI 02-1999 3 Page 6.7.5 Other sections 15 6.8 Welded sections 15 6.9 Cold formed sections 15 6.10 Tubular products 16 6.10.1 Tubes 16 6.10.2 Seamless tubes 16 6.10.3 Welded tubes 16 6.10.4 Hollow sections 16 6.10.5 Hollow bars 16 7 Other products 16 7.1 Open die forgings 16 7.2 Closed die forgings and stampings 16 7.3 Castings 16 7.4 Powder metallurgy products 16 7.4.1 Steel powder 16 7.4.2 Sintered products 16 7.4.3 Full density products 16 Annex A (informative) Steel products and associated standards 18 Annex B (informative) References 20 Annex C (informative) Notes on European Coal and Steel Community (ECSC) definitions and Harmonized Commodity Description and Coding System (HS) definitions 21 Annex D (informative) Trilingual vocabulary 24 Page Figure 1 — Illustration of typical profiled sheet 9 Figure 2 — Illustration of typical sandwich panel 9 Figure 3 — Illustrations of typical sheet piling 12 Figure 4 — Illustration of typical bearing piling 13 Figure 5 — Illustration of typical mining frame sections 14 Figure 6 — Illustration of typical heavy sections 17 4 blank EN 10079:1992 © BSI 02-1999 5 1 Scope This European Standard defines steel products according to: a) their shape and dimensions; b) their appearance and surface condition. NOTE 1 Although the products are generally defined independently of their end uses or manufacturing processes, it has been necessary sometimes to make reference to these criteria. NOTE 2 All dimensions given in this European Standard are nominal. NOTE 3 Annex C indicates the definition procedures of the ECSC Treaty and the Statistical Office of the European Communities and of the Harmonised Commodity Description and Coding System. 2 Normative references See Annex A and Annex B. 3 Liquid steel1) Steel in the liquid state ready for pouring and obtained from the melting of raw materials. NOTE A distinction is made between: — liquid steel for pouring into ingot moulds or for continuous casting; — liquid steel for castings. 4 Ingots and semi finished products2) 4.1 Ingots Products obtained by pouring liquid steel into moulds of a shape appropriate to the subsequent processing3) into semi finished products, or flat or long products, generally by hot rolling or forging. The shape generally resembles a truncated pyramid or truncated cone; the side surfaces may be corrugated and the corners more or less rounded. Depending on subsequent conversion requirements, ingots may be dressed and/or hot scarfed or cropped without altering their status as “ingots”. According to the cross section a distinction is made between the following. 4.1.1 Ingots having a cross section which may be square, rectangular (of width up to twice the thickness), polygonal, round, oval or shaped according to the profile to be rolled. 4.1.2 Slab ingots of rectangular cross section of width twice the thickness or over. 4.2 Semi finished products4) Products obtained by: — continuous casting which may or may not be followed by rolling, forging or cutting — pressure casting — rolling, forging or cutting of ingots and generally intended for conversion into flat or long products by hot rolling or forging, or for the manufacture of forgings. The cross sections may be of various shapes (see 4.2.1 to 4.2.5); the cross sectional dimensions are constant along the length with wider tolerances than those of the corresponding flat or long products and side corners more or less rounded. The side surfaces are sometimes slightly convex or concave, retaining rolling, forging or continuous casting marks and may be partly or totally dressed to remove surface defects, e.g. by cutting tool, torch or grinding. NOTE Semi finished products are defined in 4.2.1 to 4.2.5 according to shape, cross sectional dimensions and use. 4.2.1 Semi finished products of square cross section Semi finished products with sides of 50 mm or over. NOTE This dimension may be less for certain types of high alloy steels, e.g. high speed steels. 4.2.2 Semi finished products of rectangular cross section Semi finished products of cross section area 2 500 mm2 or over of width up to twice the thickness. 4.2.3 Flat semi finished products Products of thickness generally 50 mm or over of width twice the thickness or over. 4.2.4 Round semi finished products5) Continuously cast or forged semi finished products of circular cross section. 4.2.5 Blanks for sections Blanks for sections are semi finished products intended for the manufacture of sections which have been preformed for that purpose. The cross section area is generally over 2 500 mm2. NOTE In many countries the long products in question are obtained by rolling semi finished products of square or rectangular cross section. 1) See annex C.1.1. 2) See annex C.1.2 and C.1.3. 3) In the case of ingots remelted by the vacuum arc of electroslag process, the products are obtained by melting, in a mould of appropriate shape, steel electrodes that have been previously cast, forged or rolled. 4) See annex C.1.4 and C.2.1. 5) See annex C.1.3 and C.2.1.2. EN 10079:1992 6 © BSI 02-1999 5 Flat Products 5.1 Definition Products having almost rectangular cross sections, the width being much greater than the thickness. The surfaces are generally smooth except for certain products, e.g. floor plates, which show regular raised or indented surface patterns. 5.2 Uncoated flat products Flat products without any coating or surface treatment. NOTE Flat products which have received a simple coating for the purpose of protection from corrosion or mechanical damage, e.g. passivation, organic coatings, paper, oil, lacquer etc. are defined as uncoated flat products. 5.2.1 Hot rolled uncoated flat products Flat products manufactured by hot rolling semi finished products, more rarely by hot rolling ingots. NOTE Hot rolled flat products include those which have been given a very light cold rolling pass, normally less than 5 % reduction, known as a “skin pass” or “dressing pass”. 5.2.1.1 Wide flat Flat product of width over 150 mm up to and including 1 250 mm and thickness generally over 4 mm, always supplied in lengths, i.e. not coiled. A special requirement is that the edges are square; the wide flat is hot rolled on the four sides (or in box passes). NOTE EURONORM 91:81 defines wide flats by reference to shape tolerances and so includes products which comply with these tolerances made by flame cutting wider flat products. 5.2.1.2 Plate and sheet6) Flat rolled product, the edges being allowed to deform freely, supplied flat and generally in square or rectangular shapes with a width of 600 mm or over; but also in any other shape, e.g. circular or according to a design sketch. The edges may be as rolled or sheared, flame cut or chamfered. The product may also be delivered pre-curved. According to thickness, hot rolled plate and sheet are defined as: — sheet: thickness up to 3 mm; — plate: thickness 3 mm or over. Plate and sheet may be produced: a) directly on a reversing mill, or by cutting from a parent plate rolled on a reversing mill; b) by cutting from hot rolled wide strip. NOTE Plate produced on a reversing mill is generally known as quarto plate. Plate and sheet cut from hot rolled wide strip is generally known as hot rolled sheet or plate. 5.2.1.3 Strip Hot rolled flat product which immediately after the final rolling pass or after pickling or continuous annealing, is wound into a regular coil. As rolled, strip has slightly convex edges, but may also be supplied with sheared edges or slit from wider strip. Hot rolled strip is further defined as: a) hot rolled wide strip: width 600 mm or over; b) hot rolled slit wide strip: rolling width 600 mm or over, slit to widths up to 600 mm before supply; c) hot rolled narrow strip: rolling width up to 600 mm. After decoiling and transverse cutting hot rolled strip may be supplied as cut lengths. 5.2.2 Cold rolled uncoated flat products7) Uncoated flat products which have undergone a reduction in cross-section of 25 % or over by cold rolling. For flat products of rolling width up to 600 mm and for certain qualities of special steel, levels of reduction of cross-section less than 25 % may be included. These products are further defined as follows. 5.2.2.1 Plate and sheet Cold rolled flat product, the edges being allowed to deform freely, supplied flat and generally in square or rectangular shapes with a width of 600 mm or over, but also in any other shape, for example, circular or according to a design sketch; the edges may be as rolled or sheared, flame cut or chamfered. 5.2.2.2 Strip Cold rolled flat product which immediately after the final rolling pass, or after pickling or continuous annealing, is wound into a regular coil. As rolled, strip has slightly convex edges, but may also be supplied with sheared edges or slit from wider strip. Cold rolled strip is further defined as: a) cold rolled wide strip: width 600 mm or over; b) cold rolled slit wide strip: rolling width 600 mm or over, slit to widths up to 600 mm before supply; c) cold rolled narrow strip: rolling width up to 600 mm. After decoiling and cutting to length cold rolled strip may be supplied as cut lengths. 6) See annex C.2.2. 7) See annex C.1.5. EN 10079:1992 © BSI 02-1999 7 5.3 Electrical steels8) Electrical steels are characterised by their magnetic properties and are intended for the manufacture of electrical circuits. They are supplied in the form of cold rolled sheet or strip, generally less than 2 mm thick and of width up to and including 1 500 mm. NOTE There are also certain hot rolled flat products in thicknesses of 1.5 mm up to 5 mm with specified mechanical and magnetic properties. Electrical steels are defined by the following specified principal magnetic properties: a) specific total loss in W/kg at a specified level of peak magnetic flux density, T and frequency Hz; b) peak magnetic flux density, T at a specified level of peak magnetic field strength A/m and frequency Hz. Electrical steels are further defined as follows. 5.3.1 Non oriented grain electrical steels Non alloy steels and steels alloyed with silicon or silicon and aluminium which are essentially isotropic in their magnetic properties; i.e. the magnetic properties are similar both in the direction of rolling and in the transverse direction. They may be supplied: a) in the semi processed state with the required specific total loss achieved after the material has been annealed by the user according to a reference heat treatment; b) in the finally annealed state, when the product may be supplied uncoated or with an insulating coating on one or both surfaces. 5.3.2 Grain oriented electrical steels Steels alloyed with silicon which are anisotropic in that they possess a metallurgical structure which gives preferential magnetic properties in the direction of rolling. These steels are supplied with an insulating coating on both surfaces. 5.4 Tin mill and allied products for packaging 9)10)11) 5.4.1 Blackplate12) Non alloy, low carbon steel supplied in strip or sheet form which has been single or double cold reduced. Single reduced blackplate is supplied in thicknesses from 0.17 mm up to and including 0.49 mm, double reduced blackplate in thicknesses from 0.14 mm up to and including 0.29 mm. NOTE Blackplate is normally used to manufacture tinplate or ECCS, but in certain packaging applications it may be used as such. In such cases the product must be suitable for varnishing (lacquering) or printing. 5.4.2 Tinplate Non alloy, low carbon steel supplied in strip or sheet form which has been single or double cold reduced, coated on both surfaces with tin in a continuous electrolytic process. Single reduced tinplate is supplied in thicknesses from 0.17 mm up to and including 0.49 mm, double reduced tinplate in thicknesses from 0.14 mm up to and including 0.29 mm. Tinplate is supplied normally with a passivation treatment and a protective coating of oil and is suitable for varnishing (lacquering) or printing. NOTE Tinplate may also be obtained by hot dipping in a bath of molten tin. 5.4.3 Tinned sheet and strip Non alloy, low carbon steel supplied in strip or sheet form of a thickness of 0.50 mm or over and tin coated on both surfaces. 5.4.4 Electrolytic chromium/chromium oxide coated steel (ECCS) Non alloy, low carbon steel supplied in strip or sheet form which may have been single or double cold reduced; coated on both surfaces by a cathodic process with a duplex film of metallic chromium adjacent to the steel substrate with an outer layer of hydrated chromium oxide or hydroxide. Single reduced