1、BRITISH STANDARD BS EN 573-1:2004 Aluminium and aluminium alloys Chemical composition and form of wrought products Part 1: Numerical designation system The European Standard EN 573-1:2004 has the status of a British Standard ICS 71.120.10; 77.150.10 BS EN 573-1:2004 This British Standard, was publis
2、hed under the authority of the Standards Policy and Strategy Committee on 18 November 2004 BSI 18 November 2004 ISBN 0 580 44798 7 National foreword This British Standard is the official English language version of EN 573-1:2004. It supersedes BS EN 573-1:1995 which is withdrawn. The UK participatio
3、n in its preparation was entrusted by Technical Committee NFE/35, Light metals and their alloys, to Subcommittee NFE/35/5, Wrought aluminium and aluminium alloys, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cr
4、oss-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or o
5、f British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text;
6、present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover,
7、 an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NOR
8、M EN 573-1 November 2004 ICS 71.120.10; 77.150.10 Supersedes EN 573-1:1994 English version Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 1: Numerical designation systemAluminium et alliages daluminium - Composition chimique et forme des produits corroys -
9、Partie 1 : Systme de dsignation numrique Aluminium und Aluminiumlegierungen - Chemische Zusammensetzung und Form von Halbzeug - Teil 1: Numerisches Bezeichnungssystem This European Standard was approved by CEN on 26 August 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulatio
10、ns 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 Europe
11、an 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 nation
12、al 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. EUROP
13、EAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 573-1:2004: EEN 573-1:2004
14、(E) 2 Contents page Foreword3 1 Scope 4 2 International registration procedure4 3 Basis for European designation.4 4 Four-digit numerical system.5 4.1 Alloy groups .5 4.2 1xxx group5 4.3 2xxx to 8xxx groups 5 5 Registration rules for alloy modifications.6 6 Registration rules for national variations
15、 .7 Bibliography 8 EN 573-1:2004 (E) 3 Foreword This document (EN 573-1:2004) has been prepared by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publicatio
16、n of an identical text or by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at the latest by May 2005. This document supersedes EN 573-1:1994. It contains only minor modifications which clarify its technical content without modifying it. This standard i
17、s part of set of five 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
18、 3: Chemical composition. EN 573-4, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 4: Forms of products. prEN 573-5, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 5: Codification of standardized wrought products. The word
19、ing has been clarified in accordance with the “International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys“. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
20、 this European Standard: 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. EN
21、573-1:2004 (E) 4 1 Scope This document specifies a European designation system of wrought aluminium and aluminium alloys, based on an international designation system, and the procedure to obtain such international designation. It is in accordance with the “Recommendation“ dated December 15, 1970, a
22、s revised in March 2002, for an International Designation System for Wrought Aluminum and Wrought Aluminum Alloys issued by the Aluminum Association, Washington DC 20006, USA. This standard applies to wrought products and to ingots intended to be wrought. 2 International registration procedure All r
23、equests for international registration shall be submitted to The Aluminum Association by a signatory of the Declaration of Accord. The organization that requests an alloy designation shall therefore comply with the terms of the Declaration of Accord, as stated in the so called “Teal Sheets” edited b
24、y The Aluminum Association. 3 Basis for European designation The designation is constituted successively by: prefix EN followed by a blank space; letter A representing aluminium; letter W representing wrought products; a hyphen; an international designation consisting of four digits, representing th
25、e chemical composition and, if required, a letter identifying a national variation; this designation is attributed by the Aluminum Association via the international registration procedure. EXAMPLES EN AW-5052 EN AW-5154A EN 573-1:2004 (E) 5 4 Four-digit numerical system 4.1 Alloy groups The first of
26、 the four-digits, in the designation indicates the alloy group as follows: aluminium 99,00 % and greater 1xxx (1 000 series); aluminium alloys grouped by major alloying elements: copper 2xxx (2 000 series); manganese 3xxx (3 000 series); silicon 4xxx (4 000 series); magnesium 5xxx (5 000 series); ma
27、gnesium and Silicon 6xxx (6 000 series); zinc 7xxx (7 000 series); other elements 8xxx (8 000 series); unused series 9xxx (9 000 series). NOTE For 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 mi
28、nimum and maximum limits are specified. 4.2 1xxx group The designation assigned shall be in the 1xxx group whenever the minimum aluminium content is specified as 99,00 % and greater. In the 1xxx group, the last two of the four digits in the designation indicate the minimum aluminium percentage. Thes
29、e digits are the same as the two digits to the right of the decimal point in the minimum aluminium percentage, when it is expressed to the nearest 0,01 %. The second digit in the alloy designation indicates alloy modifications in impurity limits or alloying elements. If the second digit in the desig
30、nation is zero, it indicates unalloyed aluminium having natural impurity limits; integers 1 to 9, which are assigned consecutively as needed, indicate special control of one or more individual impurities or alloying elements. 4.3 2xxx to 8xxx groups The alloy designation in the 2xxx to 8xxx groups i
31、s determined by the alloying element (Mg 2 Si for 6xxx alloys) present in the greatest mean percentage. If the greatest mean percentage is common to more than one alloying element, choice of group will be in order of group sequence Cu, Mn, Si, Mg, Mg 2 Si, Zn or others. In the 2xxx to 8xxx alloy gro
32、ups the last two of the four digits in the designation have no special significance but serve only to identify the different aluminium alloys in the group. The second digit in the alloy designation indicates the original alloy and alloy modifications. If the second figure in the designation is zero,
33、 it indicates the original alloy; integers 1 to 9 inclusive, which are assigned consecutively, indicate alloy modifications. EN 573-1:2004 (E) 6 5 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
34、 more than the following amounts in the arithmetic mean of the limits for an individual alloying element or combination of elements expressed as an alloying element or both: 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 % 0,2
35、0 % 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 % to determine compliance when maximum and minimum limits are specified for a combination of two or more elements in one alloy composition, the arithmetic mean
36、of such combination is 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 %, or addition or deletio
37、n of not more than one combination of elements expressed as an alloying element with limits having a combined arithmetic mean of not more than 0,40 %; c) substitution of one alloying element for another element serving the same purpose; d) change in limits for impurities expressed singly or as a com
38、bination; e) change in limits for grain refining elements; f) maximum iron or silicon limits, of 0,12 % and 0,10 %, or less, respectively, reflecting high purity base metal. An alloy should not be registered as a modification if it meets the requirements for a national variation (see clause 6). EN 5
39、73-1:2004 (E) 7 6 Registration rules for national variations National variations of wrought aluminium and wrought aluminium alloys registered by another country in accordance with this Recommendation 1 are identified by a serial letter after the numerical designation. The serial letters are assigned
40、 in alphabetical sequence starting with A for the first national variation registered, but omitting I, O and Q. 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 limit
41、s for an individual alloying element or combination of elements expressed as an alloying element, or both, not exceeding the following amounts: 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
42、,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 % to determine compliance when maximum and minimum limits are specified for a combination of two or more elements in one alloy composition, the arithmetic mean of such co
43、mbination is 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. Iron maximum of
44、 0,12 % or less, reflecting high purity base metal, should be considered as an alloy modification (see clause 5); d) different limits on grain refining elements; e) inclusion of a minimum limit for iron or silicon, or both. An alloy meeting these requirements should not be registered as a new alloy
45、or alloy modification. EN 573-1:2004 (E) 8 Bibliography 1 International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys (The Aluminum Association Inc., 900 19 thStreet, N.W., Washington, D.C. 20006). “Teal Sheets”. blankBS EN 573-1:2004 BSI 389 Chi
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