BS EN 575-1996 Aluminium and aluminium alloys - Master alloys produced by melting - Specifications《铝和铝合金 熔铸母合金 规范》.pdf

1、BRITISH STANDARD BS EN 575:1996 Aluminium and aluminium alloys Master alloys produced by melting Specifications The European Standard EN575:1995 has the status of a British Standard ICS 77.120.10BSEN575:1996 This British Standard, having been prepared under the directionof the Engineering SectorBoar

2、d, was published underthe authority of the Standards Board and comes intoeffect on 15April1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference NFE/35 Draft for comment 91/47497 DC ISBN 0 580 25175 6 Committees responsible for this British Standard Th

3、e 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 Federation Aluminium Stockholders Association Association of Light Alloy Refiners British Foundry Association London Metal Ex

4、change Magnesium Industry Council Ministry of Defence The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Investment Casting Trade Association Light Metal Founders Association Society of Motor Manufacturers and Traders Limited Co-opte

5、d Members Amendments issued since publication Amd. No. Date CommentsBSEN575:1996 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 575 3 List of references Inside back coverBSEN575:1996 ii BSI 08-1999 National foreword This British Stand

6、ard has been prepared by Technical Committee NFE/35 and is the English language version of EN575:1995 Aluminium and aluminium alloys Master alloys produced by melting Specifications, published by the European Committee for Standardization (CEN). A British Standard does not purport to include all the

7、 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 to Corresponding British Standard EN ISO 9000-1:1994 BS EN

8、 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, theEN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updat

9、ed (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 575 July 1995 ICS 77.120.10 Descriptors: Aluminium, aluminium alloys, alloys, grades: quality, chemical compo

10、sition, designation, classifications, specifications, inspection, packing, marking English version Aluminium and aluminium alloys Master alloys produced by melting Specifications Aluminium et alliages daluminium Alliages mres obtenus par fusion Spcifications Aluminium und Aluminiumlegierungen Vorleg

11、ierungen durch Erschmelzen hergestellt Spezifikationen This European Standard was approved by CEN on1995-06-03. 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 alt

12、eration. 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 tran

13、slation 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, Luxembou

14、rg, Netherlands, 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 Stassart 36, B-1050 Brussels 1995 Copyright reserved to CEN members Ref. No. EN 575:1

15、995 EEN575:1995 BSI 08-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC132 “Aluminium and aluminium alloys” of which the secretariat is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identi

16、cal text or by endorsement, at the latest byJanuary1996, and conflicting national standards shall be withdrawn at the latest byJanuary1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, Fr

17、ance, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Orders or tenders 3 5 Requirements 3 6 Product inspection and testing methods 4 7 Marki

18、ng of products 4 8 Packaging 5 9 Delivery documents 5 10 Complaints 5 Table 1 Master alloys Chemical composition 6EN575:1995 BSI 08-1999 3 1 Scope This European Standard specifies the requirements for grades of master alloys produced by melting and intended for addition to a melt to adjust compositi

19、on and/or to control impurities and/or to control the as-cast structure. It specifies the classification and designation 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 i

20、ncorporates by dated and undated reference, provisions from other publications. These normative 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

21、 European Standard only when incorporated in it by amendment or revision. For undated references 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

22、 1: Numerical designation system. prEN 1780-2, Aluminium and aluminium alloys Designation 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 all

23、oyed aluminium ingots for remelting, master alloys and castings Part 3: Writing rules for chemical composition. EN ISO 9000-1, Quality management and quality assurance standards Part 1: Guidelines for selection and use (ISO9000-1:1994). 3 Definitions For the purposes of this standard, the following

24、definitions apply: 3.1 alloy metallic substance consisting of a mixture of the basic metallic element (the element predominating by mass) and other elements such as alloying elements and impurities 3.2 alloying element metallic or non-metallic element intentionally added to, or naturally contained b

25、y, a basic metal and the amount of which is controlled within specific upper and lower limits for the purpose of giving that metal certain special properties 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 specifie

26、d 3.4 master alloy alloy intended only for addition to a melt to adjust composition and/or to control impurities and/or to control the as-cast structure. Some master alloys can contain more than50% of the main alloying element 4 Orders or tenders The order or tender shall define the product required

27、 and shall contain the following information: a) designation of the master alloy according to this European Standard (or the customer code after agreement between supplier and purchaser); b) form of the product; c) quantity: mass (in metric tonnes); quantity tolerances if required; d) any requiremen

28、ts for certificates of conformity, test and/or analysis reports or inspection certificates; e) all exceptions to this standard which have been agreed between supplier and purchaser. 5 Requirements 5.1 Production and manufacturing processes Unless otherwise specified in the order, the production and

29、manufacturing processes shall be left to the discretion of the producer. The master alloy shall be in a condition suitable for use at normal process temperatures. Unless it is explicitly stated in the order, no obligation shall be placed on the producer to use the same processes for subsequent and s

30、imilar orders.EN575:1995 4 BSI 08-1999 The purchaser shall be notified of significant changes in the production and manufacturing process which can influence the product quality. 5.2 Quality control The supplier shall be responsible for carrying out all inspection and tests required by the relevant

31、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 master alloys shall be in accordance with t

32、he designations and chemical composition given inTable 1. The composition shown in this table is given in mass percent maximum and, if applicable, in mass percent minimum. For the main alloying elements, the supplier shall produce a chemical content as close as possible to the middle of the range. T

33、he writing rules for designations and chemical compositions, as given in prEN1780-1, prEN1780-2 and prEN1780-3, shall be applied. 5.4 Freedom from defects The products shall be reasonably free from dross, corrosion, scale or salt inclusions, grease or any other foreign bodies, including paint apart

34、from that which is approved for marking purposes, to a degree which does not affect melt quality and/or recovery. The products shall be inspected visually. The products may have shrinkage holes or cracks which may retain water. They shall therefore be thoroughly dried and preheated before charging t

35、o a furnace to avoid the risk of a violent explosion. 5.5 Form and dimension Master alloys can be supplied in several forms including ingots, splatters, granules and rod, e.g.: piglets up to1kg; notched bar or waffle plates up to15kg; splatters with typical thickness1mm to8mm; granules up to10mm; ro

36、d either in layer wound coils or in cut lengths nominal rod diameter up to10mm. The tolerances of the unit masses, the dimensions and the dimensional tolerances of the products shall be defined by agreement between supplier and purchaser at the time of ordering. 5.6 Health and safety The supplier sh

37、all be responsible for supplying the necessary information on health and safety for each product. 6 Product inspection and testing methods 6.1 General Sampling procedures and analytical tests shall be carried out in accordance with quality assurance procedures (seeENISO9000-1). The results shall be

38、traceable to national or International Standard reference materials. The capability of the analytical procedures shall be verified. 6.2 Sampling samples The melt shall be clearly identified with a traceable number. The shape of the samples and the sampling conditions for chemical analysis shall be s

39、o designed that they are representative of the melt being cast. Each sample shall be taken from the liquid metal after any treatment from either the furnace, the liquid stream, or shall be taken from a cast ingot or length of rod. NOTEDue to the effects of segregation, there are particular difficult

40、ies in sampling of cast ingots. The supplier shall be able to demonstrate the validity of the whole test procedure, including sampling, sample preparation and measurement. 6.3 Analysis of chemical composition Analysis is normally made for elements for which specific limits are shown inTable 1. For p

41、urposes of determining conformance to these limits the analysis values shall be rounded off to the nearest unit in the right hand place of figures as shown inTable 1. The analytical methods are at the discretion of the producer who shall use methods accepted at the European or international levels.

42、7 Marking of products 7.1 Identification Each bundle of ingots, drum or box of splatters, sticks, granules, pallet of coiled rods etc., shall be clearly marked with the following information: a) the producer identification; b) the designation of master alloy; c) the melt number(s), traceable to prod

43、uction data; d) the mass of the bundle, drum, box, etc.; e) the colour code for the alloy.EN575:1995 BSI 08-1999 5 The method of marking is left to the discretion of the supplier, but it shall be indelible and shall not be a source of contamination. 7.2 Colour coding Each alloy shall have a unique c

44、olour code, shown inTable 1. Each bundle of ingots, drum, box, etc. shall be marked with the appropriate colour(s). 8 Packaging Ingots shall be stacked in bundles with or without a pallet in such a manner as to give a secure package. Splatters, piglets and granules shall be supplied in drums, boxes,

45、 bags or big-bags. Coiled rods shall be securely stacked on pallets. The packaging shall be sufficiently strong to be handled without breaking and be suitably weather-proofed for the type of transport employed. Any special requirements for packaging shall be agreed between supplier and purchaser. 9

46、Delivery documents The delivery documents shall accompany the delivery and include: a) the supplier identification; b) the order number; c) the designation and form of master alloy; d) the melt number(s); e) the results of chemical analysis for all elements for which specific limits are shown inTabl

47、e 1, or other elements if specified in the order; f) the unit and total masses. 10 Complaints Chemical and physical defects can give rise to complaints if they affect the processing or the end use of the relevant finished product. The purchaser shall enable the supplier to check the validity of the

48、complaint by providing one or more of the following: a representative sample of the master alloy concerned and/or; a specimen of the finished product, or an intermediate state, obtained from the defective master alloy, with all the details allowing identification, or; justification of the defect in

49、the ingot or in the finished product, or; details of conditions of processing and inspection in the intermediate stages. In case of dispute concerning conformity with the requirements of the present standard or specification stated on the order, examinations and tests shall be performed by a referee laboratory chosen by mutual agreement between supplier and purchaser. The arbitrators decision shall be final.EN 575:1995 6 BSI 08-1999 Table 1 Master alloys Chemical composition Values in percent by mas