1、PR EN231 7 Approved by COMIT DE NORMALISATION of A.E.C.M.A. 1984-1 1-23 A. E .C .M .A. STANDARD NORME A.E.C.M.A, A.E.CA4.A. NORM I The equivalent versions in French and German languages. can be supplied by B.NA.E., 8, rue Moreau-Vauthier 92100 BOULOGNE-BILLANCOURT - FRANCE. prE N 23 i 7 Edition 2 Ma
2、y 1985 - . . .- - - - _ .- Supersedes edition 1 October 1980 - ENGLISH VERSION Aerospace series . Aluminium alloy 7075-T73 drawn bar a -. 1 MPa E 1 N/mm2 , see line 98 mm rhickness of :ladding on each face % 3irection of sample Temperature . Proof UI Stress r! Strength Elongation UI I- A z HB _L - R
3、eduction of area i ardnesc jhear Strength 3endlng mpect Tlme Stress Elongation MPs *) % MPa *) % dotes AECMA PREN2327 45 m 20223L2 0002492 5 m prEN2317 Page 4 1 MS/m jtress :orrosion M Pa - Nota Typical usa 2 r, 23 EN2004-1 L Acceptable Acceptable if : 1) Rp0,Z 6 Rp0,2 3, + 85 MPa and 2) if. Y shows a decrease of at least 3,s MS/m compared to the original value when measured within 15 minutes of ce-solution treatment and quenching. . EN2004-4 ) ST direction 75% R,0,2 3) i) A50 mm for thicknesses a s 10 mm 2) In preparation 3) Winimum values indicated in line 13. . e
