1、BRITISH STANDARD AEROSPACE SERIES BS EN 2004-5:1993 Test methods for aluminium and aluminium alloy products Part 5: Determination of cladding thickness and copper diffusion of clad semi-finished products The European Standard EN 2004-5:1993 has the status of a British StandardBS EN2004-5:1993 This B
2、ritish Standard, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15October1993 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/24
3、Draft for comment 91/74924 DC ISBN 0 580 21084 7 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 Normungsinsti
4、tut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad 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
5、 Ireland National Standards Authority 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 Normali
6、zacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBS EN2004-5:1993 BSI 01-2000 i Contents Page Cooperating organizations Inside fron
7、t cover National foreword ii Foreword 2 Text of EN 2004-5 3 National annex NA (informative) Committees responsible Inside back coverBS EN2004-5:1993 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the Eng
8、lish language version of EN 2004-5:1992 Aerospace series Test methods for aluminium and aluminium products Part 5. Determination of cladding thickness and copper diffusion of clad semi-finished product, published by the European Committee for Standardization (CEN). EN 2004-5 was produced as a result
9、 of international discussions in which the UK took an active part. 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 immunit
10、y from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN 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 i
11、ndicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2004-5 July 1993 UDC 669.715.018.26-4:620.1:537.311.3:629.7 Key words: Aircraft industry, aluminium products, aluminium alloys, semi-finished products, metal plating, clad metals, copper di
12、ffusion, tests, measurements, thickness English version Aerospace series Test methods for aluminium and aluminium alloy products Part 5: Determination of cladding thickness and copper diffusion of clad semi-finished products Srie arospatiale Mthodes dessais applicables aux produits en aluminium et a
13、lliages daluminium Partie 5. Mesure de lpaisseur du plaage et de la diffusion du cuivre dans le plaage des demi-produits plaqus Luft- und Raumfahrt Prfverfahren fr Erzeugnisse aus Aluminium und Aluminiumlegierungen Teil 5. Bestimmung der Plattierdicke und der Kupferdiffusion bei plattiertem Halbzeug
14、 This European Standard was approved by CEN on1993-07-23. CEN members are bound to comply with the CEN 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 conce
15、rning 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
16、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
17、and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1993 Copyright reserved to CEN members Ref. No. EN 2004-5:1993 EEN2004-5:1993 BSI 01-2000 2 Foreword This European
18、Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard has successively received the approval of the National Associations and the Official Services of the member
19、 countries of AECMA, prior to its presentation to CEN. This standard was submitted for Formal Vote, and the result was positive. 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 January1994, and co
20、nflicting national standards shall be withdrawn at the latest by January1994. According to 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, Net
21、herlands, Norway, Portugal, Spain, Sweden, Switzerland, UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Preparation of samples 3 3 Procedure 3 4 Test report 3EN2004-5:1993 BSI 01-2000 3 1 Scope This standard specifies a method for the measurement of cladding thickness and of copper diffusion int
22、o the cladding of semi-finished products. It is applicable when referenced. 2 Preparation of samples Sections shall be cut and prepared for examination. These sections shall be: perpendicular to the rolled surface and in the direction of rolling, polished and etched in the following reagent for a mi
23、nimum of20s at a temperature between15 C and 30 C: 3 Procedure 3.1 Measurement of cladding thickness 3.1.1 The sections shall be viewed at a suitable magnification (100to500times). On each side the cladding thickness shall be measured on at least five fields of view separated from each other by a di
24、stance of at least2mm. The mean cladding thickness on each side is the arithmetic mean of the values obtained. 3.1.2 Other methods may be used, if specified, in the order or inspection schedule. The method used shall be agreed between the manufacturer and the purchaser. It shall be referenced to sta
25、ndard samples where cladding thickness has been determined in accordance with3.1.1. The standard samples used shall be of the same material, thickness and condition as the semi-finished product under test. 3.2 Measurement of diffusion of copper into the cladding The sections shall be viewed at a sui
26、table magnification (250to500times). Any dark zones along the grain boundaries in the cladding show copper diffusion. Other methods may be used provided that the same results are guaranteed. The method defined in this standard shall be used in cases of dispute. 4 Test report The test report shall in
27、clude the following: reference to this standard, mean cladding thickness for each side of the semi-finished product, the maximum depth of copper diffusion for each sample. hydrochloridric acid (d = 1,19) : 1,5 ml, nitric acid (d = 1,38 to 1,40) : 2,5 ml, hydroluoric acid (d = 1,13) : 0,5 ml to 1,0ml
28、, distilled water : to give a volume of 100ml.4 blankBS EN2004-5:1993 BSI 01-2000 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Commit
29、tee ACE/24 upon which the following bodies were represented: Aluminium Federation Aluminium Stockholders Association Association of Light Alloy Refiners Limited BNF Metals Technology Centre British Forging Industry Association British Industrial Fasteners Federation British Investment Casting Trade
30、Association Institute of British Foundrymen Light Metal Founders Association Magnesium Industry Council Ministry of Defence National Centre of Tribology Society of British Aerospace Companies LimitedBS EN 2004-5:1993 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the
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