1、BRITISH STANDARD BS EN 573-2:1995 Aluminium and aluminium alloys Chemical composition and form of wrought products Part2: Chemical symbol based designation system The European Standard EN573-2:1994 has the status of a British Standard UDC669.71:669.715.018.26:62-777BS EN 573-2:1995 This British Stan
2、dard, having been prepared under the direction of the Engineering Sector Board (E/-), was published under the authority ofthe Standards Board and comesinto effect on 15January1995 BSI12-1998 The following BSI references relate to the work on this standard: Committee reference NFE/35/5 Draft for comm
3、ent91/47492 DC ISBN0580227634 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 Institu
4、t belge de normalisation Denmark Dansk Standard Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Aut
5、hority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Sta
6、ndardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBS EN 573-2:1995 BSI 12-1998 i Contents Page Cooperating organizations Inside front cover National foreword ii Fo
7、reword 2 Text of EN573-2 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBS EN 573-2:1995 ii BSI 12-1998 National foreword This Part of this British Standard has been prepared by Subcommittee NFE/35/5, Wroug
8、ht aluminium and aluminium alloys and is the English language version of EN573-2:1994 Aluminium and aluminium alloys Chemical composition and form of wrought products Part2: Chemical symbol based designation system, published by the European Committee for Standardization (CEN). A British Standard do
9、es 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 ins
10、ide front cover, pages i and ii, theEN title page, pages2 to6, 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 theinside front cover.EUROPEAN STANDARD NORME EUROPENNE
11、 EUROPISCHE NORM EN573-2 August1994 UDC669.71:669.715.018.26:62-777 Descriptors: Aluminium, aluminium alloys, rolled products, aluminium products, chemical composition, shape, designation, chemical formulae, codification English version Aluminium and aluminium alloys Chemical composition and form of
12、 wrought products Part2: Chemical symbol based designation system Aluminium et alliages daluminium Composition chimique et form des produits corroys Partie2: Systme de dsignation fond sur les symboles chimiques Aluminium und Aluminiumlegierungen Chemische Zusammensetzung und Form von Halbzeug Teil2:
13、 Bezeichnungssytem mit chemischen Symbolen This European Standard was approved by CEN on1994-08-17. 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-
14、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 unde
15、r 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, Netherla
16、nds, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN573-2:1994 EEN 573-
17、2:1994 2 BSI 12-1998 Foreword This European Standard has been drawn up byCEN/TC132, Aluminium and aluminium alloys, whose Secretariat is held by the Association Franaise de Normalisation (AFNOR). Within its programme of work, Technical Committee CEN/TC132 has been entrusted to prepare the following
18、standard: EN573-2, Aluminium and aluminium alloys Chemical composition and form of wrought products Part2: Chemical symbol based designation system. This standard is part of a set of four standards. The other standards deal with: EN573-1, Aluminium and aluminium alloys Chemical composition and form
19、of wrought products Part1: Numerical designation system. EN573-3, Aluminium and aluminium alloys Chemical composition and form of wrought products Part3: Chemical composition. EN573-4, Aluminium and aluminium alloys Chemical composition and form of wrought products Part4: Forms of products. This Eur
20、opean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest byFebruary1995, and conflicting national standards shall be withdrawn at the latest byFebruary1995. In accordance with the CEN/CENELEC Internal Regulations, th
21、e 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 3 2 Normative referenc
22、es 3 3 Basis of coding 3 4 Rules for the coded designation of wrought unalloyed aluminium 3 5 Rules for the coded designation of wrought aluminium alloys 4 6 Special use of grades of wrought aluminium and aluminium alloys 4 7 Alloys produced from high purity aluminium 4 Annex A (normative) Internati
23、onal chemicalsymbols 5EN 573-2:1994 BSI 12-1998 3 1 Scope This Part of EN573 specifies a code of designation applicable to aluminium and aluminium alloys as specified in the relevant European Standards. It is a descriptive code based primarily on chemical symbols. The designations in accordance with
24、 this Part ofEN573 are intended primarily as a supplement to the four figure designation described in EN573-1. This standard applies to wrought products and to ingots intended to be wrought. It is not applicable to: ingots for remelting; castings; composite products, i.e. those containing, in additi
25、on to aluminium and its alloys, other metallic or non-metallic materials; products of powder metallurgy. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate places in th
26、e text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to a
27、pplies. EN573-1, Aluminium and aluminium alloys Chemical composition and form of wrought products Part1: Numerical designation system. EN573-3, Aluminium and aluminium alloys Chemical composition and form of wrought products Part3: Chemical composition. ISO209-1:1989, Wrought aluminium and aluminium
28、 alloys Chemical composition and forms of products Part1: Chemical composition. 3 Basis of coding 3.1 The designations of aluminium and aluminium alloys are based on the chemical symbols, usually followed by numbers indicating the purity of aluminium or nominal content of the considered element. 3.2
29、 The chemical symbols used are those of the international nomenclature (seeannexA). 3.3 The numbers or figures indicating the purity of aluminium, or the nominal content of the considered element, are based on the chemical composition limits given in EN573-3. 3.4 Normally all designations complying
30、with this coding shall be put within square brackets, following the four figure designation. If, exceptionally, only the chemical symbol based designation is used, then it shall have the prefix EN, followed by a blank, then the letter A representing aluminium and the letter W identifying wrought pro
31、ducts (and ingots to be wrought). The letter W shall be separated from the following designation by a hyphen. 3.5 The designations currently in use and the corresponding chemical composition limits are specified in EN573-3. 3.6 Assignments or revisions of designations shall be approved by Technical
32、Committee CEN/TC132. 3.7 In order to ensure consistency with other national and international standards, and in particular with ISO209-1:1989 whose code of designation is based on the same principles: where the composition of an alloy is strictly identical to the composition of an alloy registered b
33、y ISO, the ISO designation shall be used; where the composition of an alloy does not correspond to the composition of any alloy inISO209-1:1989, CEN/TC132 will create a new designation for this alloy, and keep ISO/TC79 informed. 4 Rules for the coded designation of wrought unalloyed aluminium Design
34、ations for unalloyed aluminium for working shall consist of the international chemical symbol of the metal (Al) followed by the percentage purity expressed to one or more decimal places, as necessary. The symbol Al is separated by a blank space from the percentage purity. Examples: Normal use: EN AW
35、-5052 or EN AW-5052 Al Mg2,5 Exceptional use: EN AW-Al Mg2,5 Examples: EN AW-1199 Al99,99 EN AW-1070A Al99,7EN 573-2:1994 4 BSI 12-1998 If an element is added to unalloyed aluminium at a low content, the symbol corresponding to this element shall be added without a space after the percentage purity.
36、 5 Rules for the coded designation of wrought aluminium alloys 5.1 Basic principles 5.1.1 An alloy is designated by Al, followed by the symbols of the main alloying element or elements. These symbols are usually followed by numbers which express the mass percent contents of the considered elements,
37、in compliance with the rules shown in5.2. The symbol Al is separated by a blank space from the remainder of the designation. 5.1.2 Where several alloying elements are deemed to be required in the designation, they are arranged in order of decreasing nominal contents. 5.1.3 If these contents are equa
38、l, the alloying elements are arranged in alphabetical order of the symbols. 5.1.4 The chemical symbols for alloying elements shall be restricted to four elements. 5.2 Rules for distinguishing between two alloys of similar compositions 5.2.1 Care shall be taken to use the simplest possible designatio
39、n. In the case of alloys with similar compositions, additional designations shall be used for distinguishing between alloys. They are given, in decreasing priority, in5.2.2 to5.2.4. 5.2.2 The primary alloying element shall be distinguished by the nominal content (middle of the range) rounded to the
40、nearest integer or, if necessary, to the nearest5/10, or for contents less than1%, to the nearest1/10. 5.2.3 The secondary alloying elements are distinguished by the nominal content (middle of the range) rounded to the nearest integer of, if necessary, to the nearest5/10, or, for contents less than
41、1%, to the nearest1/10. 5.2.4 If the above provisions are not sufficient for differentiating between several alloys, a suffix shall be used: (A), (B), (C), etc, according to the date of submission to CEN; the first alloy submitted has no suffix. This suffix shall be placed in parentheses to avoid co
42、nfusion with the chemical symbols. 6 Special use of grades of wrought aluminium and aluminium alloys This practice shall be restricted as far as possible. It shall be limited to the case where the considered application requires specific chemical composition limits for at least one element. A letter
43、 introducing the chemical composition can then be used. The letter E has been allocated to electrical applications. 7 Alloys produced from high purity aluminium In certain alloys, the base metal is of high purity, for example Al 99,85%. It is then necessary to give the specified high content in full
44、. This content is given to two decimal places; the alloying elements are then given as set out above. Example: EN AW-1100 Al 99,0Cu Examples: EN AW-6061 Al Mg1SiCu EN AW-2014 Al Cu4SiMg Example: EN AW-2011 Al Cu6BiPb Example: EN AW-7050 Al Zn6CuMgZr Examples: EN AW-5251 Al Mg2 EN AW-5052 Al Mg2,5 EN
45、 AW-6063 Al Mg0,7Si Examples: EN AW-3103 Al Mn1 EN AW-3005 Al Mn1Mg0,5 EN AW-3004 Al Mn1Mg1 Examples: EN AW-2014 Al Cu4SiMg EN AW-2014A Al Cu4SiMg(A) Examples: EN AW-1350 EAl99,5 electrical applications EN AW-6101 EAl MgSi electrical applications EN AW-1050A Al99,5 general applications Example: EN A
46、W-5305 Al99,85Mg1EN 573-2:1994 BSI 12-1998 5 Annex A (normative) International chemical symbols The International chemical symbols are as follows: Aluminium : Al Magnesium : Mg Antimony : Sb Manganese : Mn Beryllium : Be Molybdenum : Mo Bismuth : Bi Nickel : Ni Boron : B Niobium : Nb Cadmium : Cd Ra
47、re Earths : RE Cerium : Ce Silicon : Si Chromium : Cr Silver : Ag Cobalt : Co Strontium : Sr Copper : Cu Tin : Sn Gallium : Ga Titanium : Ti Iron : Fe Vanadium : V Lead : Pb Zinc : Zn Lithium : Li Zirconium : Zr6 blankBS EN 573-2:1995 BSI 12-1998 National annex NA(informative) Committees responsible
48、 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
49、 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 National annex NB (informative) Committees responsible Publication referred to Corresponding British Stan
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