1、: AECMA PREN2b37 86 8111 LOL23LL 0003758 8 W Edition approved for publication 22 April 1986 A. E. C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM Comments should be sent within six months C5 Chairman after the date of publication decision 88, Bd. Malesherbes A.E.C.M.A. Mr HILAIRE 75008 PARIS - F
2、RANCE prEN2637 Issue P 1 April 1986 EDIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88. boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 ENGLISH VERSION Aerospace series Aluminium alloy 7075-T73 extruded bar and section 1,2 G (a or D) 100 rnm with coarse peripheral grain c
3、ontrol Srie aL.tospatiale Luft- un1 Raum hrt Alliage daluminium 7075-T73 Aluminiumlegierung 7075-T73 barres et profils fils 1,2 G (a ou D) G 10.0 mm avec contrle de la zone priphrique gros grains stranggeprete Stangen und Profile 1.2 G (a oder D) G 1 O0 mm mit Kontrolle der Grobkornrandzone This sta
4、ndard is initially published on green paper for the needs of AECMA-Members (Association Europenne des Constructeurs de Matriel Arospatial). It has been technically approved by the experts of the concerned AECMA Commission following comment by the manufacturers of the Member countries. After examinat
5、ion and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be published in its final version on yellow paper as an AECMA Standard. prEN2637 Page 3 AECMA PREN2b37 86 .II LOL23LL 0003759 T j - - - Cham Ic ar Elomont Cornp
6、osltlon 1 .SI Fe Cu Mn Mg - 1,2 - I 2,l I . Ren. 0,181 - 15,l I - 1- - - - 0,28 I - I 6.1 1 0,20 I 0,25 I 0,05 I 0.15 I I I 0,40 I 0,50 I 2,0 1 0,30 I 2,9 I 4 I 5 I 6 kfethod of meltlng Form- Method of productlon Limit dlmonslonr Bar and section Extruded 1,2 4 (a or D) EN20704 and EN2070-3 100 mm 5.
7、1 Technical specifications EN2047 to EN2050, EM2134 and Eli2341 I T73 I I T6 )Solution treated 465 2 5OC / WQ 0 5 40C i+ artificially aged 110 _+ 5OC / 6 s t s 24 h 5OC / 5s t 5 12 h kolution treated 465 - artificially aged 120 _t 5OC / 20 s t c 30 hi+ artificially aged 177 5OC / WQ Q 6 40C i: P I 1
8、 U T73 I T73 5,2 Dlmenilonal standards 6.1 Condltlon and Heat treatment Dei Iver y 6.2 Code letters Condltlon and Heat treatment UM Delivery condition I t artificially aged 177 2 5% / 5 I t 5 12 h I Delivery condition Teat place Heat troatment Sampling T7 3 Dlmenrlons laor mm concerned 0- % Thlcknoc
9、s of cladding on each face Directlon of bsmpfe L I- L I Temperatura 01% Room temperature -I- Proof u1 Stress -I - Strength Elong&tlon Reductlon of are8 u1 b- 3 400 3 420 % 415 I/ 410 z 390 b 470 485 P 485 = 475 b 470 =8 2) a 8 7-8 28 77 - Hardness 135 (for information) - - - - Shear Strength Bend in
10、g impact I Temperoture I -I- I Time I -I- - Elongation Rupture Sirerr Elongatlon I_ I prEN2637 Page 4 AECMA PREN2b37 6 10L23LL 00037b0 b 1 ectri cal onduct ivi t y 1 2ripheral coarse grain iS/m - tress corrosion - Designation 38 Notes I i 99 1 Typical use 2 1 3 4 I 5 6 3) EM2004-1 h 23 f Acceptable
11、I Acceptable if : 1) Rp0,2 * Rp0,2 4, + 85 MPa 22 y 23 1 Rpo,2 - Rp0,2 4, + 85 FlPa shows a decrease of at least 3,5 t6/m compared to the original va1u.e uhen measured within 15 min of re-solution treatment and quenching . EN2070-3 - Level A Table 5) 3) EN 200 4-4 ) Artificial ageing may also be carried out. by heating to a temperature of 177 -+ 5OC at a rate not exceeding 20% per hour, soaking at the temperature 5 g t t 12 h. i) In preparation 1) Values indicated in line 13
