1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 1997-1 2-31 prEN 3346 Edition P 2 December 1997 C5 Chairman Mr Odorico Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 B-1200 BRUXELLES PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROS
2、PACE INDUSTRIES (AECMA) Gulledelle 94 - 6-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Supersedes edition P 1 March 1988 Descriptors: ENGLISH VERSION Aerospace series Aluminium alloy AL-P2014A- T3 Drawn tube for structural applications 0,6 mm I a I 12,5 mm Srie arospatiale L
3、uft- und Raumfahrt T3 T3 Alliage daluminium AL-P2014A- Tubes tirs pour applications structurales 0,6 mm I a I12,5 mm Aluminiumlegierung AL-P20 14A- Gezogene Konstruktionsrohre fr Strukturen 0.6 mm I a I 12,5 mm This “Aerospace Series I Prestandard has been drawn up under the responsibility of AECMA
4、(The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the te
5、chnical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countr
6、ies it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. STD-AECMA PREN 33ib-ENGL 1997 LOL23L1 0013827 3T5 w Page 3 prEN 3346: 1997 O Introduction This standard is part of the series of EN metallic material standards for aerospace applica
7、tions. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-2. 1 Scope This standard specifies the requirements relating to: Aluminium alloy AL-P2014A- T3 Drawn tube for structural applications 0,6 mm I a I 12,5 mm for aerospace
8、applications. 2 Normative references This European Standard incorporates by dated or 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
9、 to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2043 EN 2070-4 EN 2716 EN 4258 EN 4500-2 Aerospace series - Metallic materials - G
10、eneral requirements for semi-finished product qualification (excluding forgings and castings) 1) Aerospace series - Aluminium and aluminium alloy wrought products - Technical specification - Part 4: Tube for structures Aerospace series - Test method - Determination of susceptibility to intergranular
11、 corrosion - Wrought aluminium alloy products AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloys 1) Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use 1) Aerospace series - Metallic materials - Rules for th
12、e drafting and presentation of material standards - Part 2: Specific requirements for aluminium, aluminium alloys and magnesium alloys 1) 1) Published as AECMA Prestandard at the date of publication of this standard previous page is blank STD-AECMA PREN 33116-ENGL 1777 LOI12333 0033828 231 Page 4 pr
13、EN 3346: 1997 Material designation Chemical Element composition % min. max. Method of melting I Si Fe Cu Mn Mg 0,5 - 3,9 0,40 0,20 0,9 0,50 5,O 1,2 0,8 Cr - 0,lO AI Others Each Total Ni Zn Ti Zr+Ti - - - - - - Base 0,lO 0.25 0,15 0,20 0,051 0,15 I Tube Method of production Limit dimension(s) mm Draw
14、n 0,6 I a I 123 I 5 I Technical specification Delivery condition Heat treatment Delivery condition code EN 2070-4 T3 5o0ces500c es40c + Straightened + O= ambient It 2 5 d U Use condition Heat treatment T3 Delivery condition Characteristics Test sample(s) Test piece($ See EN 2070-4 See EN 2070-4 8.3
15、9 Heat treatment Use condition Dimensions concerned mm 0,6 I a I 12,5 I 11 I Direction of test piece I Thickness of cladding on lo I each face L % - 12 Temperature e “C Ambient 13 Proof stress Rp0,2 MPa 2 290 14 T Strength R, MPa 2 400 - -. - 15 Elongation A% 50 2 IO 1) A50mm 2 8 2) 16 Reduction of
16、area 2 % - 17 Hardness - - 18 19 Shear strength Rc MPa - Bending k- - 20 21 Ii Impact strength - - Temperature I 0 “C Stress O, Rupture stress OR Elongation at ruoture h - MPa - a% - MPa - A% - Notes (see line 98) 1) 2) STD-AECMA PREN 33Lib-ENGL 1777 m LOL2311 0013829 178 m - 2 6 Page 5 prEN 3346: 1
17、997 See EN 2070-4 The “capability clause“ applies Z=2a :lattening of tubes 7 1 2 orrosion Intergranular) The test sample shall be free from cracks EN 2716 The “capability clause“ applies Ixternal defects vlacrostructure Peripheral coarse grain) 4 7 - - 2 3atch uniformity 0,6 mm I a I 1,6 mm 1,6 mm a
18、 r3,2 mm s 125 pm 5 150 pm s 200 pm See EN 2070-4 See EN 2070-4 The “capability clause“ applies 3,2 mm a r12,5 mm Marking inspection Dimensional inspection 7 Notes 1 15 (typical value) Hardness 3, HB 6 I 16 per product A s 24 per batch Typical use - - - See EN 2070-4 See EN 2070-4 -77 To be agreed b
19、etween manufacturer and purchaser -I See EN 2070-4 -I 1) Tube test piece. 2) Strip or machined test piece. 3) Electrical conductivity testing may be used in lieu of hardness testing by agreement betweei manufacturer and puchaser. STD-AECMA PREN 3346-ENGL 1777 M 1012311 0033830 79T M Page 6 prEN 3346: 1997 Product qualification See EN 2043 Qualification programme to be agreed between manufacturer and purchaser.
