SIST EN 10079:2007
(Main)Definition of steel products
Definition of steel products
This European Standard defines terms for steel products according to:
a) shape and dimensions; and
b) appearance and surface condition.
NOTE 1 Although the products are generally defined independently of their end uses or manufacturing processes, it has sometimes been necessary to make reference to these criteria.
NOTE 2 All dimensions given in this European Standard are nominal.
Begriffsbestimmungen für Stahlerzeugnisse
Définition des produits en acier
Definicije jeklenih izdelkov
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Definition of steel productsDefinicije jeklenih izdelkovDéfinition des produits en acierBegriffsbestimmungen für StahlerzeugnisseTa slovenski standard je istoveten z:EN 10079:2007SIST EN 10079:2007en;fr;de77.140.01Železni in jekleni izdelki na splošnoIron and steel products in general01.040.77Metalurgija (Slovarji)Metallurgy (Vocabularies)ICS:SIST EN 10079:19951DGRPHãþDSLOVENSKI
STANDARDSIST EN 10079:200701-junij-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10079March 2007ICS 01.040.77; 77.140.01Supersedes EN 10079:1992
English VersionDefinition of steel productsDéfinition des produits en acierBegriffsbestimmungen für StahlerzeugnisseThis European Standard was approved by CEN on 13 January 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10079:2007: E
EN 10079:2007 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.8 Annex A (normative) Steel products and associated standards.29 Annex B (informative) Notes on the former European Coal and Steel Community (ECSC) definitions and Harmonised Commodity Description and Coding System (HS) definitions.33 B.1 European Coal and Steel Community (ECSC) definitions.33 B.2 Harmonized Commodity Description and Coding System definitions.34 Annex C (informative) Trilingual vocabulary.36 Bibliography.44
EN 10079:2007 (E) 3 Foreword This document (EN 10079:2007) has been prepared by Technical Committee ECISS/TC 6 “Definition and classification”, the secretariat of which is held by BSI. 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 September 2007, and conflicting national standards shall be withdrawn at the latest by September 2007. This document supersedes EN 10079:1992. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 10079:2007 (E) 4 Introduction There are various classification systems existing in Europe but this European Standard only deals with definitions for steel products manufactured by or used in the steel industry or by its customers.
For example, Annex B provides guidance on the definition systems used in the former European Coal and Steel Community (ECSC) Treaty as well as the Statistical office of the European Communities and of the Harmonised Commodity Description and Coding System. The entries that are presented in this European Standard have been ordered systematically, and have been grouped by steel products according to: — shape and dimensions e.g. flat products, long products, heavy sections; — appearance and surface condition e.g. coated flat products, bright products. This European Standard also contains an alphabetical index, which has been included at the end of this document.
EN 10079:2007 (E) 5
1 Scope This European Standard defines terms for steel products according to: a) shape and dimensions; and b) appearance and surface condition. NOTE 1 Although the products are generally defined independently of their end uses or manufacturing processes, it has sometimes been necessary to make reference to these criteria. NOTE 2 All dimensions given in this European Standard are nominal. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 39, Loose steel tubes for tube and coupler scaffolds — Technical delivery conditions EN 10017, Steel rod for drawing and/or cold rolling — Dimensions and tolerances EN 10024, Hot rolled taper flange I sections — Tolerances on shape and dimensions EN 10029, Hot rolled steel plates 3 mm thick or above — Tolerances on dimensions, shape and mass EN 10034, Structural steel I and H sections — Tolerances on shape and dimensions EN 10048, Hot rolled narrow steel strip — Tolerances on dimensions and shape EN 10051:1991 + A1:1997, Continuously hot-rolled uncoated plate, sheet and strip of non-alloy and alloy steels - Tolerances on dimensions and shape (includes amendment A1:1997) EN 10055, Hot rolled steel equal flange tees with radiused root and toes — Dimensions and tolerances on shape and dimension EN 10056-1, Structural steel equal and unequal leg angles — Part 1: Dimensions EN 10058, Hot rolled flat steel bars for general purposes — Dimensions and tolerances on shape and dimensions EN 10059, Hot rolled square steel bars for general purposes — Dimensions and tolerances on shape and dimensions EN 10060, Hot rolled round steel bars for general purposes — Dimensions and tolerances on shape and dimensions EN 10061, Hot rolled hexagon steel bars for general purposes — Dimensions and tolerances on shape and dimensions EN 10067, Hot rolled bulb flats — Dimensions and tolerances on shape, dimensions and mass EN 10080, Steel for the reinforcement of concrete — Weldable reinforcing steel — General
EN 10079:2007 (E) 6 EN 10092-1, Hot rolled spring steel flat bars — Part 1: Flat bars — Dimensions and tolerances on shape and dimensions EN 10092-2, Hot rolled spring steel flat bars — Part 2: Ribbed and grooved spring leaves — Dimensions and tolerances on shape and dimensions EN 10106, Cold rolled non-oriented electrical steel sheet and strip delivered in the fully processed state EN 10107, Grain-oriented electrical steel sheet and strip delivered in the fully processed state EN 10108, Round steel rod for cold heading and cold extrusion — Dimensions and tolerances EN 10131: 2006, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield strength steel flat products for cold forming - Tolerances on dimensions and shape prEN 10138-2, Prestressing steels — Part 2: Wire prEN 10138-4, Prestressing steels — Part 4: Bar EN 10140, Cold rolled narrow steel strip — Tolerances on dimensions and shape EN 10143, Continuously hot-dip coated steel sheet and strip — Tolerances on dimensions and shape EN 10162, Cold rolled steel sections — Technical delivery conditions — Dimensional and cross-sectional tolerances EN 10169-1, Continuously organic coated (coil coated) steel flat products — Part 1: General information (definitions, materials, tolerances, test methods) EN 10202, Cold reduced tinmill products — Electrolytic tinplate and electrolytic chromium/chromium oxide coated steel EN 10205, Cold reduced blackplate in coil form for the production of tinplate or electrolytic chromium/chromium oxide coated steel EN 10208-1, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 1: Pipes of requirement class A EN 10208-2, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 2: Pipes of requirement class B EN 10210-2, Hot finished structural hollow sections of non-alloy and fine grain steels — Part 2: Tolerances, dimensions and sectional properties EN 10216-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 10216-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10216-3, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes EN 10216-4, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 4: Non-alloy and alloy steel tubes with specified low temperature properties EN 10216-5, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 5: Stainless steel tubes
EN 10079:2007 (E) 7 EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-3, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes EN 10217-4, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 4: Electric welded non-alloy steel tubes with specified low temperature properties EN 10217-5, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 5: Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-6, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties EN 10217-7, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 7: Stainless steel tubes EN 10218-2, Steel wire and wire products — General — Part 2: Wire dimensions and tolerances EN 10219-2, Cold formed welded structural hollow sections of non-alloy and fine grain steels — Part 2: Tolerances, dimensions and sectional properties EN 10220, Seamless and welded steel tubes — Dimensions and masses per unit length EN 10222-1, Steel forgings for pressure purposes — Part 1: General requirements for open die forgings. EN 10224, Non-alloy steel tubes and fittings for the conveyance of aqueous liquids including water for human consumption - Technical delivery conditions EN 10248-2, Hot rolled sheet piling of non alloy steels — Part 2: Tolerances on shape and dimensions EN 10249-2, Cold formed sheet piling of non alloy steels — Part 2: Tolerances on shape and dimensions EN 10250-1, Open die steel forgings for general engineering purposes — Part 1: General requirements EN 10255, Non-alloy steel tubes suitable for welding and threading — Technical delivery conditions EN 10265, Magnetic materials – Specification for steel sheet and strip with specified mechanical properties and magnetic permeability EN 10278, Dimensions and tolerances of bright steel products EN 10279, Hot rolled steel channels — Tolerances on shape, dimension and mass EN 10294-1, Hollow bars for machining — Technical delivery conditions — Part 1: Non alloy and alloy steels EN 10296-1, Welded circular steel tubes for mechanical and general engineering purposes — Technical delivery conditions — Part 1: Non-alloy and alloy steel tubes EN 10296-2, Welded circular steel tubes for mechanical and general engineering purposes — Technical delivery conditions — Part 2: Stainless steel EN 10297-1, Seamless circular steel tubes for mechanical and general engineering purposes — Technical delivery conditions — Part 1: Non-alloy and alloy steel tubes
EN 10079:2007 (E) 8 EN 10297-2, Seamless circular steel tubes for mechanical and general engineering purposes — Technical delivery conditions — Part 2: Stainless steel tubes EN 10303, Thin magnetic steel sheet and strip for use at medium frequencies EN 10305-1, Steel tubes for precision applications — Technical delivery conditions — Part 1: Seamless cold drawn tubes EN 10305-2, Steel tubes for precision applications — Technical delivery conditions — Part 2: Welded cold drawn tubes EN 10305-3, Steel tubes for precision applications — Technical delivery conditions — Part 3: Welded cold sized tubes EN 10305-4, Steel tubes for precision applications — Technical delivery conditions — Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems EN 10305-5, Steel tubes for precision applications — Technical delivery conditions — Part 5: Welded and cold sized square and rectangular tubes EN 10305-6, Steel tubes for precision applications — Technical delivery conditions — Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systems EN 10312, Welded stainless steel tubes for the conveyance of aqueous liquids including water for human consumption - Technical delivery conditions EN 10341, Cold rolled electrical non-alloy and alloy steel sheet and strip delivered in the semi-processed state EN ISO 1127, Stainless steel tubes —Dimensions, tolerances and conventional masses per unit length (ISO 1127:1992) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 liquid steel 1)
steel in the liquid state ready for pouring and obtained from the melting of raw materials 3.2 ingots and semi finished products 2)
3.2.1 ingots products obtained by pouring liquid steel into moulds of a shape appropriate to the subsequent processing 3) into semi finished products, or flat or long products, generally by hot rolling or forging NOTE 1 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”.
1) See B.1.2. 2) See B.1.3 and B.1.4. 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.
EN 10079:2007 (E) 9 NOTE 2 According to the cross section a distinction is made between the following: — Ingots, having a cross section that may be square, rectangular (of width up to twice the thickness), polygonal, round, oval or shaped according to the profile to be rolled; and
— Slab ingots, of rectangular cross section of width twice the thickness or over. 3.2.2 semi finished products 4)
products obtained by: — continuous casting that may or may not be followed by rolling, forging or cutting; — pressure casting; — rolling, forging or cutting of ingots or large section continuous cast products and generally intended for conversion into flat or long products by hot rolling or forging, or for the manufacture of forgings NOTE The cross sections may be of various shapes (see 3.2.2.1 to 3.2.2.5); 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. 3.2.2.1 semi finished products of square cross section semi finished products with sides of 50mm or over, generally described as blooms if the sides are greater than 200mm, or as billets if smaller NOTE These dimensions may be less for certain types of steel, e.g. high speed steels. 3.2.2.2 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, generally described as blooms if the cross section area is greater than 40 000 mm2, or as billets if smaller 3.2.2.3 flat semi finished products products of thickness generally 50 mm or over of width twice the thickness or over, generally described as slabs 3.2.2.4 round semi finished products 5)
continuously cast or forged semi finished products of circular cross section 3.2.2.5 blanks for sections semi finished products intended for the manufacture of sections that have been preformed for that purpose NOTE 1 The cross section area is generally over 2 500 mm2. NOTE 2 In many countries the long products in question are obtained by rolling semi finished products of square or rectangular cross section.
4) See B.1.5 and B.2.2. 5) See B.1.4 and B.2.2.2.
EN 10079:2007 (E) 10 3.3 flat products
3.3.1 general products having almost rectangular cross sections, the width being much greater than the thickness NOTE The surfaces are generally smooth except for certain products, e.g. floor plates, that show regular raised or indented surface patterns. 3.3.2 uncoated flat products flat products without any coating or surface treatment NOTE Flat products that 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. 3.3.2.1 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 that have been given a very light cold rolling pass, normally less than 5 % reduction, known as a “skin pass” or “dressing pass”. 3.3.2.1.1 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 , and the edges are square i.e. hot rolled on the four sides (or in box passes) 3.3.2.1.2 plate and sheet 6)
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 NOTE 1 The edges may be as rolled or sheared, flame cut or chamfered. The product may also be delivered pre-curved. Hot rolled plate and sheet are defined as: — sheet: thickness less than 3 mm; — plate: thickness 3 mm or over. NOTE 2 Plate and sheet may be produced: a) directly on a reversing mill (this product is generally known as quarto plate), or by cutting from a parent plate rolled on a reversing mill; b) by cutting from hot rolled wide strip; this product is generally known as hot rolled sheet or plate. 3.3.2.1.3 strip hot rolled flat product that immediately after the final rolling pass or after pickling or continuous annealing, is wound into a regular coil NOTE 1 As rolled, strip has slightly convex edges, but may also be supplied with sheared edges or slit from wider strip.
6) See B.2.3.
EN 10079:2007 (E) 11 NOTE 2 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 less than 600 mm before supply; c) hot rolled narrow strip: rolling width less than 600 mm. NOTE 3 After decoiling and transverse cutting, hot rolled strip may be supplied as cut lengths or sheet. 3.3.2.2 cold rolled uncoated flat products uncoated flat products that have undergone a reduction in cross-section of 25 % or over by cold rolling NOTE For flat products of rolling width less than 600 mm and for certain qualities of special steel, levels of reduction of cross-section less than 25 % may be included.
3.3.2.2.1 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, e.g. circular or according to a design sketch NOTE The edges may be as rolled sheared, flame cut or chamfered. 3.3.2.2.2 strip cold rolled flat product that immediately after the final rolling pass, or after pickling or continuous annealing, is wound into a regular coil NOTE 1 As rolled, strip has slightly convex edges, but may also be supplied with sheared edges or slit from wider strip. NOTE 2 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 less than 600 mm before supply; c) cold rolled narrow strip: rolling width less than 600 mm. NOTE 3 After decoiling and cutting to length, cold rolled strip may be supplied as cut lengths or sheet. 3.3.3 electrical steels 7)
steels characterised by their magnetic properties, that are intended for use in magnetic circuits in electrical machines NOTE 1 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 2 There are also certain hot rolled flat products in thicknesses of 1,5 mm up to 5 mm with specified mechanical and magnetic properties. NOTE 3 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;
7) See B.1.6.
EN 10079:2007 (E) 12 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: 3.3.3.1 non oriented grain electrical steels non alloy steels and steels alloyed with silicon or silicon and aluminium that 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 NOTE They may be supplied either: 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; or b) in the finally annealed state with specific total loss. The product may be supplied uncoated or with an insulating coating on one or both surfaces. 3.3.3.2 grain oriented electrical steels steels alloyed with silicon that are anisotropic in that they possess a metallurgical structure that gives preferential magnetic properties in the direction of rolling NOTE These steels are supplied with an insulating coating on both surfaces. 3.3.4 tin mill and allied products for packaging 8)
3.3.4.1 blackplate 9)
non alloy, low carbon steel supplied in strip or sheet form that has been single or double cold reduced NOTE 1 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 2 Blackplate is normally used to manufacture tinplate or electrolytic chromium coated sheet (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. 3.3.4.2 tinplate non alloy, low carbon steel supplied in strip or sheet form that has been single or double cold reduced, and coated on both surfaces with tin in a continuous electrolytic process NOTE 1 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 2 Tinplate may also be obtained by hot dipping in a bath of molten tin. 3.3.4.3 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
8) See B.1.6 and B.2.4. These products may have other uses than for packaging. 9) See B.2.5.
EN 10079:2007 (E) 13 3.3.4.4 electrolytic chromium/chromium oxide coated steel (ECCS) non alloy, low carbon steel supplied in strip or sheet form that 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 NOTE Single reduced ECCS is supplied in thicknesses from 0,17 mm up to and including 0,49 mm, double reduced ECCS in thicknesses from 0,14 mm up to and including 0,29 mm. ECCS is supplied normally with a protective coating of oil and is suitable for varnishing (lacquering) or printing. 3.3.5 coated hot or cold rolled flat products 10)
hot or cold rolled products with a permanent coating other than those defined in 3.3.2, 3.3.3 or 3.3.4 whether: a) on both surfaces of: — equal thickness on each surface; — different thickness: differential coating; b) on one surface only. NOTE All figures for coatings shown below are nominal and relate to the current technology; they may change in future. According to the type of coating, the products are classified as follows: 3.3.5.1 metal coated sheet and strip
3.3.5.1.1 hot dipped metal coated sheet and strip flat products which have been metal coated by hot dipping in a molten bath, described by reference to the total coating mass, in g/m2. These include: a) lead tin alloy coated sheet and strip (terne plate); NOTE 1 In general, the highest nominal mass for the coating corresponds to a minimum of 120 g/m2 including both surfaces. b) zinc coated sheet and strip (galvanised sheet and strip); NOTE 2 The total mass of the zinc varies in general between a value as low as possible and 700 g/m2 11). The coatings may have a spangle finish or be without spangle. After zinc coating, the surfaces may be passivated by chromating or phosphating or treatment with compounds of vanadium and/or titanium. This final surface treatment does not alter the definition of such products as "zinc coated flat products".
c) aluminium or aluminium-silicon alloy coated sheet and strip; NOTE 3 Sheet and strip coated with aluminium or an aluminium silicon alloy: the total mass of the alloy varies in general between 40 g/m2 and 300 g/m2.
10) See B.1.6. 11) By agreement, the total coating mass may exceed 700 g/m2.
EN 10079:2007 (E) 14 d) aluminium zinc coated sheet and strip NOTE 4 The total mass of the alloy varies in general between 90 g/m2 and 450 g/m2. NOTE 5 According to the aluminium content a distinction is made between: — aluminium zinc alloys (aluminium 50 % or over); — zinc aluminium alloys (aluminium over 3 % but less than 50 %). 3.3.5.1.2 electrolytically metal coated sheet and strip flat products metal coated electrolytically, described by reference to the single surface coating thickness in µm These include: 3.3.5.1.2.1 electrolytically lead tin coated sheet and strip
sheet and strip coated electrolytically with a lead tin alloy with coating thickness generally between 2,5 µm and 10 µm on each surface 3.3.5.1.2.2 electrolytically zinc coated sheet and strip (electrozinc sheet) sheet and strip coated electrolytically with zinc with coating thickness generally between 1 µm and 10 µm on each surface NOTE This coating never shows a spangle finish. After zinc coating, the surfaces may be passivated by chromating or phosphating or treatment with compounds of vanadium and/or titanium. This final surface treatment does not alter the definition of such products as "zinc coated flat products". 3.3.5.1.2.3 zinc nickel coated sheet and strip
Sheet and strip coated electrolytically with zinc nickel alloy with coating thickness generally between 1 µm and 8,5 µm on each surface 3.3.5.2 sheet and strip with organic coatings uncoated or metal coated (e.g. zinc coated) sheet and strip, subsequently coated with an organic material or a mixture of metal powder and organic material by one of the following continuous processes: a) by the application of one or more coats of paint or other type of product;
NOTE 1 After drying, the thickness of the coating varies according to its character from 2 µm to 400 µm on each surface. b) by the application of an adhesive film whether or not followed by a coating of organic materials NOTE 2 The coating may have different surface designs and a thickness generally between 35 µm to 500 µm on each surface. 3.3.5.3 sheet and strip with miscellaneous inorganic coatings sheet and str
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SLOVENSKI oSIST prEN 10079:2005
PREDSTANDARD
november 2005
Definicije jeklenih izdelkov
Definition of steel products
ICS 01.040.77; 77.140.01 Referenčna številka
oSIST prEN 10079:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
prEN 10079
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2005
ICS Will supersede EN 10079:1992
English Version
Definition of steel products
Définition des produits en acier Begriffsbestimmungen für Stahlerzeugnisse
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ECISS/TC 6.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10079:2005: E
worldwide for CEN national Members.
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prEN 10079:2005 (E)
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .8
Annex A (normative) Steel products and associated standards .29
Annex B (informative) Notes on the former European Coal and Steel Community (ECSC)
definitions and Harmonised Commodity Description and Coding System (HS) definitions.33
Annex C (informative) Trilingual vocabulary .36
Bibliography .44
2
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prEN 10079:2005 (E)
Foreword
This document (prEN 10079:2005) has been prepared by Technical Committee ECISS/TC 6 “Steels -
Definition and classification”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This Standard cancels and replaces EN 10079: 1992, which has been technically revised.
Annex A is normative, annexes B, and C are informative.
3
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prEN 10079:2005 (E)
Introduction
There are various classification systems existing in Europe but this European Standard only deals with
definitions for steel products manufactured by or used in the steel industry or by its customers. For example
Annex B provides guidance on the definition systems used in the former European Coal and Steel Community
(ECSC) Treaty as well as the Statistical office of the European Communities and of the Harmonised
Commodity Description and Coding System.
The entries that are presented in this European Standard have been ordered systematically, and have been
grouped by steel products according to:
— their shape and dimensions e.g. flat products, long products, heavy sections;
— their appearance and surface condition e.g. coated flat products, bright products.
This European Standard also contains an alphabetical index, which has been included at the end of this
document.
4
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prEN 10079:2005 (E)
1 Scope
This European Standard defines terms for 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 sometimes been necessary to make reference to these criteria.
NOTE 2 All dimensions given in this European Standard are nominal.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 39, Loose steel tubes for tube and coupler scaffolds — Technical delivery conditions.
EN 10017, Steel rod for drawing and/or cold rolling — Dimensions and tolerances.
EN 10020, Definition and classification of grades of steel.
EN 10024, Hot rolled taper flange I sections — Tolerances on shape and dimensions.
EN 10029, Hot rolled steel plates 3 mm thick and above; tolerances on dimensions, shape and mass.
EN 10034, Structural steel I and H sections; tolerances on shape and dimensions.
EN 10048, Hot rolled narrow steel strip; tolerances on dimensions and shape.
EN 10051, Continuous hot-rolled uncoated plate, sheet and strip of non-alloy and alloy steels —Tolerances on
dimensions and shape.
EN 10055, Hot rolled steel equal flange tees with radiused root and toes — Dimensions and tolerances on
shape and dimensions.
EN 10056-2, Structural steel equal and unequal leg angles — Part 2: Tolerances on shape and dimensions.
EN 10058, Hot rolled flat steel bars for general purposes — Dimensions and tolerances on shape and
dimensions.
EN 10059, Hot rolled square steel bars for general purposes — Dimensions and tolerances on shape and
dimensions.
EN 10060, Hot rolled round steel bars for general purposes — Dimensions and tolerances on shape and
dimensions.
EN 10061, Hot rolled hexagon steel bars for general purposes — Dimensions and tolerances on shape and
dimensions.
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EN 10162, Cold rolled steel sections — Technical delivery conditions — Dimensional and cross-sectional
tolerances.
EN 10067, Hot rolled bulb flats — Dimensions and tolerances on shape, dimensions and mass.
EN 10080, Steel for the reinforcement of concrete — Weldable reinforcing steel — General.
EN 10092-1, Hot rolled spring steel flat bars — Part 1: Flat bars — Dimensions and tolerances on shape and
dimensions.
EN 10092-2, Hot rolled spring steel flat bars — Part 2: Ribbed and grooved spring leaves — Dimensions and
tolerances on shape and dimensions.
EN 10106, Cold rolled non-oriented electrical steel sheet and strip delivered in the fully processed state.
prEN 10107:2003, Grain-oriented electrical steel sheet and strip delivered in the fully processed state.
EN 10108, Round steel rod for cold heading and cold extrusion — Dimensions and tolerances.
EN 10126, Cold rolled electrical non-alloyed steel sheet and strip delivered in the semi-processed state.
prEN 10131:2002, Cold rolled uncoated low carbon and high yield strength steel flat products for cold forming
— Tolerances on dimensions and shape.
prEN 10138-1:2005, Prestressing steels — Part 1: General requirements.
prEN 10140:2003, Cold rolled narrow steel strip — Tolerances on dimensions and shape.
prEN 10143:2004, Continuously hot-dip coated steel sheet and strip — Tolerances on dimensions and shape.
EN 10165, Cold rolled electrical alloyed steel sheet and strip delivered in the semi-processed state.
EN 10202, Cold reduced tinmill products — Electrolytic tinplate and electrolytic chromium/chromium oxide
coated steel.
EN 10205, Cold reduced blackplate in coil form for the production of tinplate or electrolytic
chromium/chromium oxide coated steel.
EN 10208-1, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 1: Pipes
of requirement class A.
EN 10208-2, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 2: Pipes
of requirement class B.
prEN 10210-2:2003, Hot finished structural hollow sections of non-alloy and fine grain structural steels — Part
2: Tolerances, dimensions and sectional properties.
EN 10216-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy
steel tubes with specified room temperature properties.
EN 10216-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-alloy
and alloy steel tubes with specified elevated temperature properties.
EN 10216-3, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine
grain steel tubes.
EN 10216-4, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 4: Non-alloy
and alloy steel tubes with specified low temperature properties.
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EN 10216-5, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 5: Stainless
steel tubes.
EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy
steel tubes with specified room temperature properties.
EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric
welded non-alloy and alloy steel tubes with specified elevated temperature properties.
EN 10217-3, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine
grain steel tubes.
EN 10217-4, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 4: Electric
welded non-alloy steel tubes with specified low temperature properties.
EN 10217-5, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 5: Submerged
arc welded non-alloy and alloy steel tubes with specified elevated temperature properties.
EN 10217-6, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 6: Submerged
arc welded non-alloy steel tubes with specified low temperature properties.
prEN 10217-7:1998, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 7:
Stainless steel tubes.
EN 10218-2, Steel wire and wire products — General — Part 2: Wire dimensions and tolerances.
prEN 10219-2: 2003, Cold formed welded structural hollow sections of non-alloy and fine grain steels — Part
2: Tolerances, dimensions and sectional properties.
EN 10220, Seamless and welded steel tubes — Dimensions and masses per unit length.
EN 10224, Non-alloy steel tubes and fittings for the conveyance of aqueous liquids including water for human
consumption — Technical delivery conditions.
EN 10248-2, Hot rolled sheet piling of non alloy steels — Part 2: Tolerances on shape and dimensions.
EN 10249-2, Cold formed sheet piling of non alloy steels — Part 2: Tolerances on shape and dimensions.
EN 10250-1, Open die steel forgings for general engineering purposes — Part 1: General requirements.
EN 10255, Non-alloy steel tubes suitable for welding and threading — Technical delivery conditions.
EN 10278, Dimensions and tolerances of bright steel products
EN 10279, Hot rolled steel channels — Tolerances on shape, dimension and mass.
EN 10296-1, Welded circular steel tubes for mechanical and general engineering purposes — Technical
delivery conditions — Part 1: Non-alloy and alloy steel tubes.
prEN 10296-2: 2001, Welded circular steel tubes for mechanical and general engineering purposes —
Technical delivery conditions — Part 2: Stainless steel tubes.
EN 10297-1, Seamless circular steel tubes for mechanical and general engineering purposes — Technical
delivery conditions — Part 1: Non-alloy and alloy steel tubes.
prEN 10297-2: 2001, Seamless circular steel tubes for mechanical and general engineering purposes —
Technical delivery conditions — Part 2: Stainless steel tubes.
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prEN 10079:2005 (E)
EN 10305-1, Steel tubes for precision applications — Technical delivery conditions — Part 1: Seamless cold
drawn tubes.
EN 10305-2, Steel tubes for precision applications — Technical delivery conditions — Part 2: Welded cold
drawn tubes.
EN 10305-3, Steel tubes for precision applications — Technical delivery conditions — Part 3: Welded cold
sized tubes.
EN 10305-4, Steel tubes for precision applications — Technical delivery conditions — Part 4: Seamless cold
drawn tubes for hydraulic and pneumatic power systems.
EN 10305-5, Steel tubes for precision applications — Technical delivery conditions — Part 5: Welded and cold
sized square and rectangular tubes.
prEN 10305-6, Steel tubes for precision applications — Technical delivery conditions — Part 6: Welded cold
drawn tubes for hydraulic and pneumatic power systems.
EN 10312, Welded stainless steel tubes for the conveyance of aqueous liquids including water for human
consumption — Technical delivery conditions.
EURONORM 19:57, IPE beams; I-beams with parallel flange facings.
EURONORM 53:62, Hot-rolled broad flanged I-beams (wide-flanged I-beams) with parallel flange facings.
EURONORM 54:80, Hot-rolled small U-beams.
EURONORM 91: 81, Hot-rolled wide flats; permissible deviations for dimension, form and weight.
EN ISO 1127, Stainless steel tubes —Dimensions, tolerances and conventional masses per unit length
(ISO 1127: 1996).
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply:
3.1
1)
liquid steel
steel in the liquid state ready for pouring and obtained from the melting of raw materials
3.2
2)
ingots and semi finished products
3.2.1
ingots
3)
products obtained by pouring liquid steel into moulds of a shape appropriate to the subsequent processing
into semi finished products, or flat or long products, generally by hot rolling or forging
1) See B.1.2.
2) See B.1.3 and B.1.4.
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.
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NOTE 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:
3.2.1.1 Ingots having a cross section that may be square, rectangular (of width up to twice the thickness),
polygonal, round, oval or shaped according to the profile to be rolled
3.2.1.2 Slab ingots of rectangular cross section of width twice the thickness or over
3.2.2
4)
semi finished products
products obtained by:
— continuous casting that may or may not be followed by rolling, forging or cutting;
— pressure casting;
— rolling, forging or cutting of ingots or large section continuous cast products and generally intended for
conversion into flat or long products by hot rolling or forging, or for the manufacture of forgings.
NOTE The cross sections may be of various shapes (see 3.2.2.1 to 3.2.2.5); 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.
3.2.2.1
semi finished products of square cross section
semi finished products with sides of 50mm or over, generally described as blooms if the sides are greater than
200mm, or as billets if smaller.
NOTE These dimensions may be less for certain types of steel, e.g. high speed steels.
3.2.2.2
semi finished products of rectangular cross section
2
semi finished products of cross section area 2 500 mm or over of width up to twice the thickness, generally
2
described as blooms if the cross section area is greater than 40 000 mm , or as billets if smaller
3.2.2.3
flat semi finished products
products of thickness generally 50 mm or over of width twice the thickness or over, generally described as
slabs
3.2.2.4
5)
round semi finished products
continuously cast or forged semi finished products of circular cross section
3.2.2.5
blanks for sections
semi finished products intended for the manufacture of sections that have been preformed for that purpose
2
NOTE 1 The cross section area is generally over 2 500 mm
4) See B.1.5 and B.2.2.
5) See B.1.4 and B.2.2.2.
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NOTE 2 In many countries the long products in question are obtained by rolling semi finished products of square or
rectangular cross section.
3.3
flat products
3.3.1
general
products having almost rectangular cross sections, the width being much greater than the thickness
NOTE The surfaces are generally smooth except for certain products, e.g. floor plates, that show regular raised or
indented surface patterns.
3.3.2
uncoated flat products
flat products without any coating or surface treatment
NOTE Flat products that 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.
3.3.2.1
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 that have been given a very light cold rolling pass, normally less than
5 % reduction, known as a “skin pass” or “dressing pass”.
3.3.2.1.1
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 , and the edges are square i.e. hot rolled on the four sides (or in box
passes)
3.3.2.1.2
6)
plate and sheet
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
NOTE 1 The edges may be as rolled or sheared, flame cut or chamfered. The product may also be delivered pre-
curved. Hot rolled plate and sheet are defined as:
— sheet: thickness up to 3 mm;
— plate: thickness 3 mm or over.
NOTE 2 Plate and sheet may be produced:
a) directly on a reversing mill; This product is generally known as quarto plate, or by cutting from a parent plate rolled
on a reversing mill;
b) by cutting from hot rolled wide strip; This product is generally known as hot rolled sheet or plate.
6) See B.2.3.
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3.3.2.1.3
strip
hot rolled flat product that immediately after the final rolling pass or after pickling or continuous annealing, is
wound into a regular coil
NOTE 1 As rolled, strip has slightly convex edges, but may also be supplied with sheared edges or slit from wider strip.
NOTE 2 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.
NOTE 3 After decoiling and transverse cutting, hot rolled strip may be supplied as cut lengths or sheet.
3.3.2.2
cold rolled uncoated flat products
uncoated flat products that have undergone a reduction in cross-section of 25 % or over by cold rolling
NOTE 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.
3.3.2.2.1
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, e.g. circular or according to a
design sketch
NOTE The edges may be as rolled sheared, flame cut or chamfered.
3.3.2.2.2
strip
cold rolled flat product that immediately after the final rolling pass, or after pickling or continuous annealing, is
wound into a regular coil
NOTE 1 As rolled, strip has slightly convex edges, but may also be supplied with sheared edges or slit from wider strip.
NOTE 2 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.
NOTE 3 After decoiling and cutting to length, cold rolled strip may be supplied as cut lengths or sheet.
3.3.3
7)
electrical steels
steels characterised by their magnetic properties and are intended for the manufacture of electrical
transformers and motors
NOTE 1 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.
7) See B.1.6.
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NOTE 2 There are also certain hot rolled flat products in thicknesses of 1,5 mm up to 5 mm with specified mechanical
and magnetic properties.
NOTE 3 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.
3.3.3.1
non oriented grain electrical steels
non alloy steels and steels alloyed with silicon or silicon and aluminium that 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
NOTE They may be supplied either:
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; or
b) in the finally annealed state, when the product may be supplied uncoated or with an insulating coating on one or both
surfaces.
3.3.3.2
grain oriented electrical steels
steels alloyed with silicon that are anisotropic in that they possess a metallurgical structure that gives
preferential magnetic properties in the direction of rolling
NOTE These steels are supplied with an insulating coating on both surfaces.
3.3.4
8)
tin mill and allied products for packaging
3.3.4.1
9)
blackplate
non alloy, low carbon steel supplied in strip or sheet form that has been single or double cold reduced
NOTE 1 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 2 Blackplate is normally used to manufacture tinplate or electrolytic chromium coated sheet (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.
3.3.4.2
tinplate
non alloy, low carbon steel supplied in strip or sheet form that has been single or double cold reduced, and
coated on both surfaces with tin in a continuous electrolytic process
NOTE 1 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.
8) See B.1.6 and .B.2.4. These products may have other uses than for packaging.
9) See B.2.5.
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NOTE 2 Tinplate may also be obtained by hot dipping in a bath of molten tin.
3.3.4.3
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
3.3.4.4
electrolytic chromium/chromium oxide coated steel (ECCS)
non alloy, low carbon steel supplied in strip or sheet form that 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
NOTE Single reduced ECCS is supplied in thicknesses from 0,17 mm up to and including 0,49 mm, double reduced
ECCS in thicknesses from 0,14 mm up to and including 0,29 mm. ECCS is supplied normally with a protective coating of
oil and is suitable for varnishing (lacquering) or printing.
3.3.5
10)
coated hot or cold rolled flat products
hot or cold rolled products with a permanent coating other than those defined in 3.3.2, 3.3.3 or 3.3.4 whether:
a) on both surfaces:
— of equal thickness on each surface;
— of different thickness: differential coating;
b) on one surface only.
NOTE All figures for coatings shown below are nominal and relate to the current technology; they may change in
future.
According to the type of coating, the products are classified as follows.
3.3.5.1
metal coated sheet and strip
3.3.5.1.1
hot dipped metal coated sheet and strip
flat products which have been metal coated by hot dipping in a molten bath, described by reference to the
2
total coating mass, in g/m
These include:
a) lead tin alloy coated sheet and strip (terne plate);
2
NOTE In general, the highest nominal mass for the coating corresponds to a minimum of 120 g/m including both
surfaces.
b) zinc coated sheet and strip (galvanised sheet and strip);
2
11)
NOTE The total mass of the zinc varies in general between a value as low as possible and 700 g/m . The
coatings may have a spangle finish or be without spangle. After zinc coating, the surfaces may be passivated by
10) See B.1.6.
2
11) By agreement, the total coating mass may exceed 700 g/m .
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prEN 10079:2005 (E)
chromating or phosphating. This final surface treatment does not alter the definition of such products as “zinc coated flat
products”.
c) aluminium or aluminium-silicon alloy coated sheet and strip;
NOTE Sheet and strip coated with aluminium or an aluminium silicon alloy: the total mass of the alloy varies in
2 2
general between 40 g/m and 300 g/m .
d) aluminium zinc coated sheet and strip.
2 2
NOTE 1 The total mass of the alloy varies in general between 90 g/m and 450 g/m .
NOTE 2 According to the aluminium content a distinction is made between:
— aluminium zinc alloys (aluminium 50 % or over);
— zinc aluminium alloys (aluminium over 3 % up to 50 %).
3.3.5.1.2
electrolytically metal coated sheet and strip
flat products metal coated electrolytically, described by reference to the single surface coating thickness in µm
These include:
3.3.5.1.2.1
electrolytically lead tin coated sheet and strip
sheet and strip coated electrolytically with a lead tin alloy with coating thickness generally between 2,5 µm
and 10 µm on each surface
3.3.5.1.2.2
electrolytically zinc coated sheet and strip (electrozinc sheet)
sheet and strip coated electrolytically with zinc with coating thickness generally between 1 µm and 10 µm on
each surface
NOTE This coating never shows a spangle finish. After zinc coating the surface may be passivated by chromating or
phosphating. This surface treatment does not alter the definition of such products as “zinc coated flat products”.
3.3.5.1.2.3
zinc nickel coated sheet and strip
Sheet and strip coated electrolytically with zinc nickel alloy with coating thickness generally between 1 µm and
8,5 µm on each surface
...
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