1、A. E.C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3123 Issue P 1 October 1988 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROPATIAL 88, boulevard Malesherbes, 75008 PARIS - TL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Aluminium alloy AL427 Solution t
2、reated and artificially aged (T6) Structurai precision castings Srie arospatiale Luft- und Raumfahrt Alliage daluminium AL-C27 Aluminiumlegierung AL-C27 Mis en solution Isungsgegl ht et revenu (T6) Pices coules de prcision pour structure und warmausgelagert (T6) Feingupstcke fr Zellenanwendungen Thi
3、s .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 of AECMA-Members. It has been technically approved by the experts of the concerned AECMA Commission follo
4、wing 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 or functionally, without re-identification of the standard. After examination and signature of the AECMA S
5、tandard 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 Standardization) for final vote. Nota - Extra copies can be supplied by B.N.A.E. - 8, rue Moreau-Vauthier - 92100 BOULO
6、GNE-BILLANCOURT Edition approved for publication Comments should be sent within six months C5 Chairman 17th October 1988 A.E.C.M.A. J. ODORICO after the date of publication decision 88, Bd. Malesherbes 75008 PARIS - FRANCE 0 aecma 1988 1 Scope and iield of application This staraard specifjes for the
7、 aerospace spplication, the mechanf cal properties fer precision csting , sc?ution treated and artificial 1y aged (T6), in aluninium alloy AL-C27. Unless ciitherwise specified by the drawirg, the ordcr or the inspection sckdule, the present standrc! shall .be used in conjunction with the refermced E
8、FI standards. 2 Refereras Er; 2032-1, Aercspace series - OlVeiltfJfial designation for nieta1 1 ic materifs EN 2032-2, EN 2076-33 Aerospace series - IIetallic inzterials - Part 2 - Coding of materials in deltvery heat treatment ccriditioris Aerospace series - Alurinium aixi magnesiuni alloy ingots i
9、;nd castings - Technical specificatiori - Part 3 - Pre-production ar;d product ion castings EW 2500-2, Aercspace series - Guideifnes for the preparcition wc! use of the stdndards for metallic materiais - Part 2 - Aliirninium and aliminiiim a1:oys i) 1) ri preparation Previous page is blank Others Si
10、 Fe Cu Mn Mg Zn Ti Be each I total Al I l Element Chemlcal Composltlon I min. 6,5 - - - 0,25 - 0,04 - - - 7,5 0,20 0,20 0,lO 0,45 0,lO 0,20 0,07 0,05 0,15 Rem. 1 Aethod of melting Precision casting :orm dethod of productlon .tmlt dlmenslons EN 2076-3 - - i.1 Technlcal spoclflcatton i.2 Dlmenslonal s
11、tandard i.3 Dlmenstonal standard code ;.I Condition and T6 Solution treated 525 200 - 190 - 210 - 185 - 205 - 180 - 200 I 1 I Tempereturo Proof i_ Stress iardness Elongatlon Reductton of area - 280 - 250 - 270 - 245 - 265 - 240 - 260 I I I I I I 80 (for information only) hear Strength -I- ending npe
12、ct KI I Temperature I Time 2 Stress a o Elongatlon w - I Rupture Stress Elongation at rupture Jotes ;ee llne 98 - e e Designation I 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 EN 2076-3. I Notes 3) Test samples taken from any zone. 4) Test samples taken from a designated zone. 5) For greater thickness, values are to be agreed. Typical use
