A.E.C.M.A. STANDARD NORME A.E.C.M.A. A. E.C.M.A. NORM DRAFT pr E N 2450 Edition 1 January 1981 ENGLISH VERSION STEEL FE-PL73 1230 MPa Q Rm Q 1420 MPa BARS De Q 40 mm AEROSPACE SERIES ACIER FE-PL73 1230 MPa 520C 840 G Q 86coc/ ohear Strength tending - J mpact Time OC h MPa) % - - L Stress LI Elongation Rupture Stress u u r MPa) A - % - Elongation at rupture *) 1 MPa = 1 Nlrnrn Notes 1) HV for De 4 5 mm. AECMA PREN2Ll50 BL = LO12311 0003220 i Distance in mm HRC min. prEN2450 Page 4 6 10 16 25 40 49 48 48 47 47 1 Jominy hardenability Notes Typical use 2 3 Low alloygeneral purpose steel.
