ASD-STAN PREN 2070-4-1987 Aerospace Series Aluminium and Aluminium Alloy Wrought Products - Technical Specification - Part 4 - Tube for Structures (Edition 1)《航空航天系列 铝和铝合金压力加工制品 技术.pdf

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1、I. Approved by COMITE DE NORMALISATION of A.E.C.M.A. 1987-02-01 -I U w I- z a The equivalent versions in French and German languages can be supplied by B.N.A.E., 8, rue Moreau-Vauthier 92100 BOULOGNE-BILLANCOURT - FRANCE, A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prE N 2070 Part 4 Edition

2、 I February 1987 ENGLISH VERSION Aerospace series Aluminium and aluminium alloy wrought products - Technical specification - Part 4 - Tube for structures Srie arospatiale Loft- und Raumfahrt Demi-produits corroys en aluminium et alliages daluminium - Spcification technique - Partie 4 - Tubes pour ap

3、plication structurale Halbzeug aus Aluminium und Aluminium- Knetlegierungen - Technische Lieferbedingungen - Teil 4 - Konstruktionsrohre This industrial standard for the aerospace sector has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatia

4、l). It is published on yellow paper in three equivalent versions (English, French, German). It will be submitted to CEN (European Committee for Standardization) as a draft European Standard. AECMA PREN2070-OY 7 m LOL23LL 0007bLL 9 W prEM2070-4 Page 2 Contents 1 2 References 3 Manufacture 4 Batch 5 D

5、imensions 6 External defects 7 Tensile test Scope and field of application 8 Batch uniformity 9 Flattening test 10 Drift test 11 Coarse grain zone 12 Special tests 13 Marking AECMA PREN2070-0LI 87 m LOL23LL O007612 O m prEN2070-4 Page 3 1 Scope and field of application The present standard specifies

6、 the particular requirements of tubes for structures in alurii-nium or aluminium alloys, obtained by extrusion or extrusion and drawing. This standard shall be used in conjunction with EN2070-1. 2 References EN2002-1 Aerospace series - Test methods for metallic materials - Part 1 - Tensile testing a

7、t ambient temperature Aerospace serif7 - Test methods for metallic materials - Part 7 - Hardness test Aerospace series - Test me ods for metallic materials - Part 9 - Tube cirift expanding test Aerospace series - Test ethods for metallic materials - Part 10 - Tube flattening test EM2002-7, f? EN2002

8、-9 y IT EN2002-10, EN2002-16, Aerospace series - Test qiethods for metall - Dye penetrant testing c materials - Part 16 EN207-1, Aerospace series - Al umi ni um and al umi ni um a1 1 oy wrought products - Technical specification - Part 1 - General requirements. 3 Manufacture Unless otherwise specifi

9、ed, the method of manufacture to be en;ployed shall be at the discretion of the manufactut-er, however, the following requirements shall be observed : - The use of bridge die process or die quenching is only permissible when agreed in writing between the manufacturer and purchaser. i) in preparation

10、 AECMA PREN2070-04 87 3032333 O007633 2 111 Mass per metre : er (kg/m) prEN2070-4 Page 4 0,25 0,25 1 4 Eatch 4.1 Batch definition Batch definition shal not permitted. 4.2 Batch size conform to EN2070-1 except that aggregat on of casts is The maximum size of the batch, proportional to the tube mass per metre is shown in table 1. Table 1 fn al w t c ln al c s =I L al fn C a - .- - m al x W E .w f o m + m I- -

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