1、STD-AECMA PREN 208b-ENGL 1778 LO1231L OOLi384 T25 = Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX Comments should be sent within six months after the date of publication to Edition approved for publication C5 Chai
2、rman AECMA STANDARD NORME AECMA AECMA NORM I prEN 2086 Edition P 1 April 1998 ICs: Srie arospatiale Alliage daluminium AL-P2618A T851 Pices forges a I150 mm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It
3、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 technical content shall not be changed to an extent that
4、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 countries it will be submitted as a draft European Standard t
5、o CEN (European Committee for Standardization) for formal vote. PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 11 ENGLISH VERSION Aerospace series Aluminium alloy AL-P26 I 8A T851 Hand forgings a
6、I150 mm Luft- und Raumfahrt Aluminiumlegierung AL-P2618A T851 Freiformschmiedestcke a I150 mm 1998-04-30 AECMA Gulledelle 94 B-1200 BRUXELLES Mr Evetts aecrna 1998 STD*AECMA PREN 208b-ENGL 1798 10123LL OOLLi370 7i7 Page 3 prEN 2086: 1998 O Introduction This standard is part of the series of EN metal
7、lic material standards for aerospace applications. 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-P2618A T85 1 Hand forgings a I150 mm for
8、aerospace 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
9、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 latest edition of the publication referred to applies. EN 2082-3 Aerospace series - Aluminium alloy forging stock and forgings - T
10、echnical specification - Part 3: Pre-production and production forgings EN 2486 Aerospace series - Aluminium alloy AL-P2618A - Forging stock 1) EN 4258 Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use 1) EN 4500-2 Aer
11、ospace series - Metallic materials - Rules for the 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 PR
12、EN 208b-ENGL 1778 = LOL23Ll OOL937L b83 Page 4 prEN 2086: 1998 1 Material designation I Aluminium alloy AL-P2618A 5 Technical specification EN 2082-3 520 oc 5 es 535 oc 1 WQ e i00 oc + 1 % s controlled stretched I 5 % + 8 = ambientit 2 5 d OCCIWQIOOC + 1 % s controlled stretched s 5 % 8s 195 “C I 16
13、 h + 185 “C t 24 h Delivery condition code Use condition K U T851 T85 1 Heat treatment Delivery condition Delivery condition + 185 “Cs 6% 195 “CI 16 h 5 t 124 h Test sample) Test piece(s) See EN 2082-3 See EN 2082-3 Dimensions concerned each face Thickness of cladding on mm as90 90a120 120 a I 150 -
14、 - yo - Direction of test piece L LT I ST L LT ST L LT I ST Proof stress Strength Elongation Rp0,2 MPa 2385 2375 2375 2380 2370 2365 2370 2360 2355 Rm MPa 2440 2435 2425 2430 2425 2415 2420 2415 2405 A % 26 2 4,5 23 $6 2 45 23 26 2 43 23 Reductionofarea Z % - Il I Bending k- - Impact strength - Temp
15、erature e OC - Time - h Stress Elongation Rupturestress ma MPa - OR MPa - a% - Elongation at rupture A% - 1 3 I Method of melting Form Hand forgings Method of production Forged from forging stock EN 2486 14.3 I Limit dimension(s) Imm I as150 _ Delivery condition T351 I T851 Heat treatment Characteri
16、stics 18.3 I Heat treatment I Use condition I 14 16 f 17 Temperature I e I “C I Ambient I Ambient I Ambient I 18 I Shear strength I R, I MPa I I C I - I 27 I Notes (see line 98) I STD-AECMA PREN 208b-ENGL 1778 m 11L2311 0014372 51T m 5 7 xternal defects T35 1 T851 Electrical conductivity y MS/m 17,5
17、 (typical value) 21 ,O (typical value) or Hardness - HB 115 (typical value) 135 (typical value) 6 I 16 per product I 20 per product A I 24 per batch c 30 per batch lacrostructure - - - iternal defects iatch uniformity See EN 2082-3 - - Marking inspection Dimensional inspection Notes Typical use Page 5 prEN 2086: 1998 See EN 2082-3 -I See EN 2082-3 -I See EN 2082-3 - 1- See EN 2082-3 See EN 2082-3 Page 6 prEN 2086: 1998 Product qualification Qualification programme to be agreed between manufacturer and purchaser.
