1、I_- AECMA PREN3L22 88 W LcIL231L RROLJ_B73 2 A. E .C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3122 Issue P 1 October 1988 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TEL. 45-63-82-85 UDC : Key words ENGLISH VERSION Aer
2、ospace series Aluminium alloy AIX27 Solution treated and artificially aged (T6) High strength Structural precision castings Srie arospatiale Alliage daluminium AL-C27 Mis en solution et revenu (T62 Hautes caractristiques Pices coules de prcision pour structure Luft- und Raumfahrt Aluminiumlegierung
3、AL-C27 Isungsgegl ht und warmausgelagert (T6) Mechanisch hochfeste Feingupstcke fr Zellenanwendungen This Aerospace Series) pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs o
4、f AECMA-Members. It has been technically approved by the experts of the concerned A ECMA Commission following comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically o
5、r 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 to CEN (European Committee for Standardizatio
6、n) for final vote. Nota - Extra copies can be supplied by B.N.A.E. - 8, rue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT Edition approved for publication 17th October 1988 Comments should be sent within six months after the date of publication decision A.E.C.M.A. 88, Bd. Malesherbes 75008 PARIS - FR
7、ANCE C5 Chairman J. ODORICO I I aecma t988 1 This standard specifies for the aerospace application, the mechanical properties for premium precision casting , solution treated and artificially aged (T6), in aluminium alloy AL-C27. Scope and field of application Unless otherwise specified by the drawi
8、ng, the order or the inspection schedule, the present standard shall be used in conjunction with the referenced EN standards. 2 References EN 2032-1, Aercspace series - Conventional designation for metal 1 ic materi al s EN 2032-2, EN 2076-3, Aerospace series - Netallic materials - Part 2 - Coding o
9、f materials in delivery heat treatment conditions Aerospace series - Aluminium and magnesium alloy ingots and castings -a Technical specification - Part 3 - Pre-production and production castings Aerospace series - Guidelines for the preparation and use of the standards for metallic materials - Part
10、 2 - Aluminium and aluminium alloys i) EN 2500-2, - 1) in preparation Previous page is blank i prEN 3122 Page 4 AECMA PREN3122 88 I 10123L1 0004875 b W Others Chemlcal Element si Fe Cu Mn Mg Zn Ti Be each total A Composltlon 0,25 - 0.04 max. 7,5 0.20 0,20 0,lO 0.45 0,lO 0,20 0,07 0.05 0,15 Rem. o a
11、e o O Method of malting Precision casting. Form Method of productlon Llmlt dlmenslons 5.1 Technlcal speclflcatlon EN 2076-3 5.2 Dlmenslonal standard - 5.3 Dlmenslonal standard code - 6.1 Condltlon I T6 and heat treatment dellvery Solution treated 525 O 5 540C / 6 5 t 5 18 h water quenched O 200 - 22
12、0 RPS2 - 200 - 210 - 225 - 205 - 225 - MPa) - 285 - 265 - 285 - 260 - 280 - 270 - *m MPa *) 280 I - 3 - 4 - 3 - 4 - 3 - 4 5 - A% - - Z% - Proof Stress Strength Elongstlon Reductlon of area Hardness 80 (for information) - Shear Strength Bendlng Impact - a. W lu U o NE sec Temperature Time Stress Elon
13、gatton Rupture Stress Elongatton at rupture 94 Ine 98 prEN 3122 Page 5 -p_ AECMA PREN3122 88 LOLZI?L 00OLl87b_Bp 1 Designation Notes Typical use 2 1) -After prior agreement between the purchaser and the founder this alloy may contain modification elements of which the presence must be indicated on the test report. 2) The values indicated are minima obtained on tensile specimens conforming to 6.5 of 3) Test samples taken from any zone. 4) Test samples taken from a designated zone. EN 2076-3. 5) For greater thickness, values are to be agreed.
