BS-EN-573-1-1995.pdf

BRITISH STANDARD BS EN 573-1:1995 Aluminium and aluminium alloys Chemical composition and form of wrought products Part 1: Numerical designation system The European Standard EN 573-1:1994 has the status of a British Standard UDC 669.71:669.715.018.26:62-777 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 573-1:1995 This British Standard, having been prepared under the direction of the Engineering Sector Board (E/-), was published under the authority of the Standards Board and comes into effect on 15 January 1995 © BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference NFE/35/5 Draft for comment 91/47491 DC ISBN 0 580 22762 6 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: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standard FinlandSuomen Standardisoimisliito, r.y. FranceAssociation française de normalisation GermanyDeutsches Institut für Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portuguès da Qualidade SpainAsociación Española de Normalización y Certificación SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 573-1:1995 © BSI 11-1998i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 573-13 National annex NA (informative) Committees responsibleInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 573-1:1995 ii © BSI 11-1998 National foreword This Part of this British Standard has been prepared by Subcommittee NFE/35/5, Wrought aluminium and aluminium alloys and is the English language version of EN 573-1:1994 Aluminium and aluminium alloys Chemical composition and form of wrought products Part 1: Numerical designation system, 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. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 4, 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, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 573-1 August 1994 UDC 669.71:669.715.018.26:62-777 Descriptors: Aluminium, aluminium alloys, rolled products, aluminium products, chemical composition, shape, designation, numerical designation, codification English version Aluminium and aluminium alloys Chemical composition and form of wrought products Part 1: Numerical designation system Aluminium et alliages daluminium Composition chimique et form des produits corroyés Partie 1: Système de désignation numérique Aluminium und Aluminiumlegierungen Chemische Zusammensetzung und Form von Halbzeug Teil 1: Numerische Bezeichnungssysteme This European Standard was approved by CEN on 1994-08-17. 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 © 1994 Copyright reserved to CEN members Ref. No. EN 573-1:1994 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 573-1:1994 2 © BSI 11-1998 Foreword This European Standard has been drawn up by CEN/TC 132, Aluminium and aluminium alloys, whose Secretariat is held by the Association Française de Normalisation (AFNOR). Within its programme of work, Technical Committee CEN/TC 132 has been entrusted to prepare the following standard: EN 573-1, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 1: Numerical designation system. This standard is part of a set of four standards. The other standards deal with: EN 573-2, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 2: Chemical symbol based designation system. EN 573-3, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 3: Chemical composition. EN 573-4, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 4: Forms of products. 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 February 1995, and conflicting national standards shall be withdrawn at the latest by February 1995. In accordance with 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 Foreword2 1Scope3 2Basis of coding3 3Four figure designation system3 3.1Alloy groups3 3.21xxx group3 3.32xxx to 8xxx groups3 3.4National variations3 4Registration rules for alloy modifications3 5Registration rules for national variations4 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 573-1:1994 © BSI 11-19983 1 Scope This Part of EN 573 describes a four-figure numerical system for designating wrought aluminium and aluminium alloys. It is in accordance with the Recommendation dated December 15, 1970 for an International Designation System for Wrought Aluminium and Wrought Aluminium Alloys issued by the Aluminum Association, Washington DC 20006, USA. This standard applies to wrought products and to ingots intended to be wrought. 2 Basis of coding The designation is constituted successively by: the prefix EN followed by a blank space; the letter A representing aluminium; the letter W representing wrought products; a hyphen; four figures representing the chemical composition; if required, a letter identifying a national variation. 3 Four figure designation system 3.1 Alloy groups The first of the four figures in the designation indicates the alloy group as follows: NOTEFor the purpose of this standard an alloying element is any element which is intentionally added for any purpose other than grain refinement and for which minimum and maximum limits are specified. 3.2 1xxx group In the 1xxx group, the last two figures indicate the minimum aluminium percentage. These figures are the same as the two figures to the right of the decimal point in the minimum aluminium percentage, when it is expressed to the nearest 0,01 %. The second figure indicates modifications in impurity limits or alloying elements. If the second figure in the designation is zero, it indicates unalloyed aluminium having natural impurity limits; numerals 1 to 9, which are assigned consecutively as needed, indicate special control of one or more individual impurities or alloying elements. 3.3 2xxx to 8xxx groups In the alloy groups 2xxx to 8xxx inclusive, the last two figures have no special significance but serve only to identify the different aluminium alloys in the group. The second figure indicates alloy modifications. If the second figure in the designation is zero, it indicates the original alloy; numerals 1 to 9 inclusive, which are assigned consecutively, indicate alloy modifications. 3.4 National variations National variations are identified by a serial letter following the four figures. The serial letters are assigned in alphabetical sequence starting with A for the first national variation registered, but omitting I, O and Q. 4 Registration rules for alloy modifications A modification of the original alloy is limited to any one or a combination of the following: a) change of not more than the following amounts in the arithmetic mean of the limits for an alloying element: Examples:EN AW-5052 EN AW-5154A aluminium 99,00 % minimum and greater1xxx(1 000 series) aluminium alloys grouped by major alloying elements copper2xxx(2 000 series) manganese3xxx(300 series) silicon4xxx(4 000 series) magnesium5xxx(5 000 series) magnesium and silicon6xxx(6 000 series) zinc7xxx(7 000 series) other elements8xxx(8 000 series) unused series9xxx(9 000 series) arithmetic mean of limits for alloying elements in original alloy maximum change up to 1,0 %0,15 % over 1,0 % up to 2,0 %0,20 % over 2,0 % up to 3,0 %0,25 % over 3,0 % up to 4,0 %0,30 % over 4,0 % up to 5,0 % 0,35 % over 5,0 % up to 6,0 %0,40 % over 6,0 %0,50 % Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 573-1:1994 4 © BSI 11-1998 To determine compliance when limits are specified for a combination of two or more elements in one alloy composition, the mean of such combination shall be compared to the sum of the mean values of the same individual elements, or any combination thereof, in another alloy composition; b) addition or deletion of not more than one alloying element with limits having an arithmetic mean of not more than 0,30 %; c) substitution of one alloying element for another element serving the same purpose; d) change in limits for impurities; e) change in limits for grain refining elements; f) distinctive iron or silicon limits, or both, reflecting high purity base metal. An alloy shall not be registered as a modification if it meets the requirements for a national variation (see clause 5). 5 Registration rules for national variations A national variation has composition limits which are similar but not identical to those registered by another country, with differences such as: a) differences in arithmetic mean of limits for an alloying element not exceeding the following amounts: To determine compliance when limits are specified for a combination of two or more elements in one alloy composition, the mean of such combination shall be compared to the sum of the mean values of the same individual elements, or any combination thereof, in another alloy composition: b) substitution of one alloying element for another element serving the same purpose; c) different limits for impurities except for low iron. Low iron, reflecting high purity base metal, shall be considered an alloy modification (see clause 4); d) different limits on grain refining elements; e) inclusion of a minimum limit for iron or silicon, or both. An alloy meeting these requirements shall not be registered as a new alloy or alloy modification. arithmetic mean of limits for alloying elements in original alloy or modification maximum difference up to 1,0 %0,15 % over 1,0 % up to 2,0 %0,20 % over 2,0 % up to 3,0 %0,25 % over 3,0 % up to 4,0 %0,30 % over 4,0 % up to 5,0 %0,35 % over 5,0 % up to 6,0 %0,40 % over 6,0 %0,50 % Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 573-1:1995 © BSI 11-1998 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by Technical Committee NFE/35, Light metals and their alloys, to Subcommittee NFE/35/5, Wrought aluminium and aluminium alloys upon which the following bodies were represented: Aluminium Federation Aluminium Stockholders Association London Metal Exchange Magnesium Industry Council The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of British Welded Aluminium Tube Makers Association of Light Alloy Refiners Limited Institution of Structural Engineers Metal Packaging Manufacturers Association Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:14:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI Ð British Standards Institution BSI is the independent national body responsible for preparing British Standards. 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