1、A. E. C. M. A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prE N 2727 issue P 1 April 1986 DITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 i. . ENGLISH VERSION Aerospace series Aluminium alloy AI-C26-T6 chill castings Sr
2、ie arospatiale pices de fonderie moulage en coquille Alliage daluminium AI-C26-T6 Luft- und Raumfahrt Aluminiumlegierung AI-C26-T6 Gustcke Kokillengu This standard is initially published on green paper for the needs of AECMA-Members (Association Europenne des Constructeurs de Matriel Arospatial). It
3、 has been technically approved by the experts of the concerned AECMA Commission following comment by the manufacturers of the Member countries. 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
4、 published in its final version on yellow paper as an AECMA Standard. Nota - Extra copies can be supplied by B.N.A.E. - 8, rue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT Edition approved for publication Comments should be sent within six months after the date of publication decision -. ., 22 April
5、 1986 I_LI.- A.E.C.M.A. %E, Bd. Malesherbes C5 Chairman Mr HILAIRE 75008 PARIS FRANCE . *. prEN2727 Page 3 AECMA PREN2727 86 m LOL231L OOOL1OL17 2 m Element Chernkal I Others 1) Fe Cu Mn M9 Zn- Ti Be each Tcital Al Ren. - - - 0,40 - 0904 - - - 0,20 0,20 0,lO 0,7 0,lO 0,25 0,07 0,05 0,15 Si Corn posl
6、tlon min. 1 ma. % 2 I 3 I 4 1 Wethod of melting Form Method of productlon Llmlt dlmensloni 6.1 Technical specifications Chill cast EN2076-1 and EW2076-3 6,2 Dimensional standards 6.1 Condition and T6 Solution treated 525s 0 d 5OC / t Water quench 0 S 7OoC + Artificially aged 1504 0 S 18OOC / 3 S t S
7、 10 h / Air cool 12 h / I U Heat treatment Delivery 6.2 Code letten Condltlon and Heat treatment use T6 Delivery condition Test plece Heat treetment Sampling 2) 4) T6 5) T6 T6 rnm Dlmenrlons concerned - Wall thickness of 20 mmm 6) % Thlckneis of claddlng on each face Dlrectlon of sample - Room tempe
8、rature Twnperiture 8 - Proof stress R: p Strength R, W - I- - W =! Elongtlon A 3 240 I 220 I 3 240 WPa * 320 I 9 290 r 3 310 I I b 4,O 3 2,0 a 3,O % I I * % - MPs Hardness HE - Shear Strength Rc - Bending k Impsct K - J Or J/crn2 g: h - t w LT MPe * % - Rupture I stress (“ MPa % - - Not. , AECMA PRE
9、N2727 8b m LOL23Ll OOOLtOLt8 Lt m pr-EN2727 Page 4 1 Designation Notes Typlcal use 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 $66.5 of EN2076-3. , 3).Separately cast test samples. 8 4) Test samples taken from any zone. 5) Test samples taken from a designated zone. 6) For greater thickriesses, values are to be agreed. .
