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1、BRITISH STANDARD BS EN 576:1996 Aluminium and aluminium alloys Unalloyed aluminium ingots for remelting Specifications The European Standard EN 576:1995 has the status of a British Standard ICS 77.120.10 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:15:44 GMT+00:00 2006, Uncontrolled Cop
2、y, (c) BSI BS EN 576:1996 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 April 1996 BSI 08-1999 The following BSI references relate to the work on this standard: Com
3、mittee reference NFE/35 Draft for comment 91/47496 DC ISBN 0 580 25174 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee NFE/35, Light metals and their alloys, upon which the following bodies were represented: Aluminium F
4、ederation Aluminium Stockholders Association Association of Light Alloy Refiners British Foundry Association London Metal Exchange Magnesium Industry Council Ministry of Defence The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Inve
5、stment Casting Trade Association Light Metal Founders Association Society of Motor Manufacturers and Traders Limited Co-opted Members Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:15:44 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
6、 EN 576:1996 BSI 08-1999i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 576 3 List of references Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:15:44 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 576:1996 ii BSI 08-
7、1999 National foreword This British Standard has been prepared by Technical Committee NFE/35 and is the English language version of EN 576:1995 Aluminium and aluminium alloys Unalloyed aluminium ingots for remelting Specifications, published by the European Committee for Standardization (CEN). A Bri
8、tish 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. Cross-reference Publication referred toCorresp
9、onding British Standard EN ISO 9000-1:1994BS EN ISO 9000 Quality management and quality assurance standards Part 1:1994 Guidelines for selection and use Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, an inside back cove
10、r 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 09:15:44 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPE
11、AN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 576 July 1995 ICS 77.120.10 Descriptors: Aluminium, non-alloyed aluminium, ingots, grades: quality, chemical composition, designation, classifications, specifications, inspection, packing, marking English version Aluminium and aluminium alloys Unalloyed
12、 aluminium ingots for remelting Specifications Aluminium et alliages daluminium Lingots pour refusion en aluminium non alli Spcifications Aluminium und Aluminiumlegierungen Unlegiertes Aluminium in Masseln Spezifikationen This European Standard was approved by CEN on 1995-06-03. CEN members are boun
13、d 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 Ce
14、ntral 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 a
15、s 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 Comit E
16、uropen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN 576:1995 E Licensed Copy: sheffieldun sheffieldu
17、n, na, Mon Nov 06 09:15:44 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 576:1995 BSI 08-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 132, Aluminium and aluminium alloys, of which the secretariat is held by AFNOR. This European Standard shall be given th
18、e status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 1996, and conflicting national standards shall be withdrawn at the latest by January 1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to i
19、mplement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Contents Page Foreword 2 1Scope 3 2Normative references 3 3Definitions 3 4Orders or tenders3 5
20、Requirements 3 6Product inspection and testing methods 4 7Inspection documents 7 8Marking of products 7 9Packaging 7 10Delivery documents 7 11Complaints 7 Table 1 Unalloyed aluminium ingots General applications Chemical composition 5 Table 2 Unalloyed aluminium ingots Specific applications Chemical
21、composition 6 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:15:44 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 576:1995 BSI 08-19993 1 Scope This European Standard specifies the requirements for grades of unalloyed and refined aluminium ingots intended for remelting. It specifies the cl
22、assifications and designations applicable to these grades, the conditions in which they are produced, their properties and the marks by which they are identified. 2 Normative references This European Standard incorporates by dated and undated reference, provisions from other publications. These norm
23、ative references are cited at the appropriate places in the 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 refe
24、rences, the latest edition of the publication referred to applies. prEN 1780-1, Aluminium and aluminium alloys Designation of unalloyed and alloyed aluminium ingots for remelting, master alloys and castings Part 1: Numerical designation system. prEN 1780-2, Aluminium and aluminium alloys Designation
25、 of unalloyed and alloyed aluminium ingots for remelting, master alloys and castings Part 2: Chemical symbol based designation system. prEN 1780-3, Aluminium and aluminium alloys Designation of unalloyed and alloyed aluminium ingots for remelting, master alloys and castings Part 3: Writing rules for
26、 chemical composition. EN ISO 9000-1, Quality management and quality assurance standards Part 1: Guidelines for selection and use (ISO 9000-1:1994). 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 aluminium metal with a minimum content of 99,0 % by mass of alumi
27、nium, provided that the content by mass of any other element does not exceed the following limits: iron + silicon contents not greater than 1,0 %; other element contents not greater than 0,10 % each, with the exception of copper which is permitted to a content of up to 0,20 % provided that neither t
28、he chromium nor the manganese content exceeds 0,05 %. NOTEAluminium in the liquid state or in the form of ingots for remelting is often called “unalloyed aluminium”. 3.2 refined aluminium aluminium of very high purity (conventional aluminium content: 99,95 % by mass and more) which is obtained by sp
29、ecial metallurgical treatments 3.3 impurity metallic or non-metallic element present but which is not intentionally added to a metal and for which no lower limit is specified 3.4 ingot for remelting metal cast into a form suitable for remelting which has been processed, as appropriate, to adjust the
30、 chemical composition and to remove certain metallic or non-metallic impurities 4 Orders or tenders The order or tender shall define the product required and shall contain the following information: a) designation of the unalloyed or refined aluminium according to this European Standard or the custo
31、mer code after agreement between supplier and purchaser); b) form of the product; c) quantity: mass (in metric tonnes); quantity tolerances if required; d) any requirements for certificates of conformity, test and/or analysis reports or inspection certificates; e) any additional requirements agreed
32、between supplier and purchaser. 5 Requirements 5.1 Production and manufacturing processes Unless otherwise specified on the order, the production and manufacturing processes shall be left to the discretion of the producer. Unless it is explicitly stated on the order, no obligation shall be placed on
33、 the producer to use the same processes for subsequent and similar orders. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:15:44 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 576:1995 4 BSI 08-1999 5.2 Quality control The supplier shall be responsible for carrying out all inspection and te
34、sts required by the relevant European Standard and/or the particular specification, prior to shipment of the product. If the purchaser wishes to inspect the product at the suppliers works, he shall stipulate this at the time of placing the order. 5.3 Chemical composition Each grade of unalloyed alum
35、inium for general applications shall be in accordance with the designations and chemical composition given in Table 1. Each grade of unalloyed aluminium for specific application shall be in accordance with the designations and chemical composition given in Table 2. The writing rules for designations
36、 and chemical compositions, as given in prEN 1780-1, prEN 1780-2 and prEN 1780-3, shall be applied. If the purchaser requires content limits for elements not specified in this European Standard, these limits shall be stated on the order, after agreement between supplier and purchaser. 5.4 Freedom fr
37、om defects To a standard agreed between supplier and purchaser, the ingots shall be reasonably free from: a) visible defects such as grease, dirt, products of corrosion, dross or any other foreign bodies, including paint apart from that which is approved for marking purposes; b) metallic or non-meta
38、llic inclusions; c) gas porosity. The ingots may have shrinkage holes or cracks which may retain water. They shall therefore be thoroughly dried and preheated before charging to a furnace to avoid the risk of a violent explosion. 5.5 Form of products There are several possible shapes of ingots, e.g.
39、: Trapezoidal which can be stacked. This type of ingot may have one or more notches to enable it to be divided into pieces if required; T, U, sow, etc. shapes. The tolerances of the unit masses, the shape, the dimensions and the dimensional tolerances of the ingots and bundles shall be defined by ag
40、reement between supplier and purchaser at the time of ordering. 6 Product inspection and testing methods 6.1 Analysis of chemical composition Sampling procedures and analytical tests shall be carried out in accordance with quality assurance procedures (see EN ISO 9000-1). The results shall be tracea
41、ble to national or International Standard reference materials. The capability of the analytical procedures shall be verified. The melt shall be clearly identified with a traceable number. The shape of the samples and the sampling conditions for chemical analysis shall be so designed that they are re
42、presentative of the melt being cast. The analytical samples shall be taken during the cast, from the metal distribution system. At least two samples shall be taken, from the beginning and end of every melt. Each analytical sample shall be suitably machined and, when analyzed by emission spectrometry
43、, shall be sparked at least twice. The analysis of the sample is the arithmetic mean of the sparks. Each sample shall meet the specified composition limits and the analysis of the melt is the arithmetic mean of all the samples taken from this melt. The producer shall determine and periodically check
44、 the analytical accuracy of each element analyzed. He shall be able to demonstrate the validity of the whole test procedure, including sampling, sample preparation and measurement. The analytical methods are at the discretion of the supplier who shall use methods accepted at the European or Internat
45、ional levels. 6.2 Chemical composition limits The compositions shown in Table 1 and Table 2 are given in mass percent maximum unless otherwise stated. In interpreting the results of chemical analysis, the number representing the result of the determination of an element content shall be rounded to t
46、he same number of decimal places as the corresponding number in this standard. 6.3 Special analytical requirements Sodium and lithium impurities can cause severe problems on casting, rolling and the quality of some special products and it is strongly recommended that the producer of the ingots analy
47、ses these elements and indicates the results (in mass percent to 4 decimals) on the certificate of analysis. For these elements and for other impurities that can cause similar problems, the limits may be defined by agreement between supplier and purchaser. Licensed Copy: sheffieldun sheffieldun, na,
48、 Mon Nov 06 09:15:44 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 576:1995 BSI 08-19995 Table 1 Unalloyed aluminium ingots General applications Chemical composition Values in percent by mass, all values are maxima DesignationSiFeCuMnMgZnFurther elements TiOthers Each Al min. NumericalChemical symbo
49、ls EN AB-10990EN AB-Al 99,990,00400,00300,00200,0010,00100,004Ga 0,0030 V0,001 0,0020,00199,99 EN AB-10980EN AB-Al 99,980,0060,0060,00200,0020,0020,004Ga 0,003 V0,001 0,0020,00199,98 EN AB-10970EN AB-Al 99,970,0080,0080,0040,0030,0020,005Ga 0,004 V0,001 0,0020,00199,97 EN AB-10900EN AB-Al 99,900,0450,0400,0050,0100,0100,030Ga 0,0300,0050,01099,90 EN AB-10800EN AB-Al 99,800,100,150,010,020,010,04Ga 0,030,020,0299,80 EN AB-10700EN AB-Al 99,700,100,200,010,030,020,040,020,0399,70 EN AB-10500EN AB-Al 99,50
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