1、UI 2 2 Lu tbl I1I a W o Approved by COMIT6 DE NORMALISATION Of A.E.C.M.A. 1979-12-10 U 2 w k o w e The equivalent versions in French and German languages can he supplied by B.N.A.E 8, rue Mareau-Vauthier 92100 BOULOGNE-Ell-LANCOURT - FRANCE. A AECMAPREN20I3 40 LOL23LL 00020b 5 - - A.E.C.M.A. STANDAR
2、D DRAFT NORME A.E.C.M.A. prEN2093 A. E.C.M.A. NORM Edition 1 October 1980 ENGLISH VERSION ALUMINIUM ALLOY 7009 - T736 HAND FORGINGS a 22 21,5 Y 22 21,s Acceptable The forgings ai-e suspect scc? a sr-ress corrosicn test is required. Not acceptle. The foraims shall be re-aged af l70 f :OC, total time ageing and re-ai;e*n, stall be : 6 h, or cozxpletely hea5 treatmen: (sclusion Zi-eaxen?, quenching and ageing). The forgings shall then meet; the elec:=lccl ccndx- tivity requirenenss. XN204-4 2, 2) In preparation . . . . .= . . . . -. . . . . . . - .
