1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 15 May 2003 prEN 4291 Edition P 1 May 2003 Comments should be sent within six months after the date of publication to AECMA-STAN ICs: Descriptors: ENGLISH VERSION Aerospace series Aluminium alloy AL-P8090- Forging stock Srie aros
2、patiale Alliage daluminium AL-P8090- Produits destins la forge Luft- und Raumfahrt Aluminiumlegierung AL-P8090- Schmiedevormaterial This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is
3、 published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeab
4、ility is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Metallic Material Doma
5、in I I Copyright 2003 O by AECMA-STA1 Page 2 prEN 4291 : 2003 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANS Metallic Material Domain. After inquiries and votes carried out in accordance with the rules of AECMA-STAN defined in AECMA- STANS General Process Manu
6、al, this standard has received approval for Publication. Page 3 prEN 4291: 2003 O Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. This standard has been prepared in accorda
7、nce with EN 4500-2. 1 Scope This standard specifies the requirements relating to: Aluminium alloy AL-P8090- Forging stock for aerospace application. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references
8、 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 references the lates
9、t edition of the publication referred to applies. EN 2082-2, EN 4258, EN 4500-2, EN 6018, Aerospace series - Aluminium alloy forging stock and forgings - Technical specification - Part 2: Forging stock Aerospace series - Metallic materials - General organization of standardization - Links between ty
10、pes of EN standards and their use Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 2: Specific rules for aluminium, aluminium alloys and magnesium alloys 1) Aerospace series - Test methods for metallic materials - Determination of densify accor
11、ding to displacement method 1) 1) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 4291: 2003 Use condition Heat treatment - 3.1 - 3.2 7 - - - 3.1 3.2 3.3 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 - - - - - - - - - - - - - - - - - - - - - - 03 Deli
12、very condition Aluminium alloy AL-P8090- I Material designation Heat treatment Dimensions concerned mm Method of melting I T89 (See line 29) - Form Ingot or billet Method of production Cast Limit dimension(s) mm aorD s500 Technical specification EN 2082-2 Thickness of cladding on each face Delivery
13、condition I 03 % - - Heat treatment I Reductionofarea Delivery condition code I U Z % - Hardness Shear strength R, MPa Bending k- Characteristics - - - Test sample(s) I Forged bar - Elongation Rupture stress Test piece(s) I See EN 2082-2. a% - oR MPa - Elongation at rupture A % - ST I LT I L I Direc
14、tion of test piece Ambient I Ambient I Temperature I 0 I “C I Ambient 2300 I 2305 I Proof stress I RO, I MPa I 2330 Strength I R, I MPal 2430 I 2420 I 2380 Elongation I A I % I 23 I 23 I 21 - Impact strength I I Temperature I 0 I “C I - I Time Ihl Page 5 prEN 4291 : 2003 - - ieference heat treatment
15、 Delivery condition + hand forged + 2 % cold deformed 5 % + 170 “C 6% 185 “C I20 h t 30 h G 0,5 + 525 OC e 535 OC I WQ e 35 OC 3ain size - 1 ixternal defects See EN 2082-2. EN 6018 nternal defects Iensity 2 7 Marking inspection The “capability clause“ applies p 2,56 kgIdm3 Iimensional inspection Vot
16、es rypical use -I See EN 2082-2. - -I See EN 2082-2. -I See EN 2082-2. a Chemical analyses taken from the molten metal stream shall exhibit the following maximum impurity levels: Fe10,06%,Si10,06%, Na19ppm.,Ca1120ppm. Forging dimensions and manufacturing parameters shall be as agreed between ingot supplier and forgemaster. The “capability clause“ applies. -I 100 Qualification programme to be agreed between manufacturer and purchaser. Page 6 prEN 4291: 2003 - Product qualification
