1、 AECMA PREN2919 84 LOL231L 0004438 b m . - I Edition approved for publication 31 March 1988 A. E.C. M .A. STAN DARD NOR ME A. E.C. M.A. A.E.C.M.A. NORM Comments should be sent within six months C5 Chairman J. ODORICO after the date of publication decision A.E.C.M.A. 88, Bd. Malesherbes 75008 PARIS -
2、 FRANCE prEN 2979 Issue P 7 March 1988 EDIT PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Steel FE-PL72 Carburized, hardened and tempered Bar De 850 780 830 - 680 - - - -
3、 1150Rm 51450 1050Rm 5 1350 A z _ % _ % IiB 341 SHB 5415 RC k MPa *: _ Shear Strength Bending K Impact o ac I Time t h MPa *I % - Stress UI U u Elongatlon Rupture Stress Elongation at rupture - Notes see line 98 MPa *I A - I 1 MPa= 1 N/mm2 1) 2) Copyright Association Europeene des Constructeurs de M
4、ateriel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2919 88 a 101231L OO04442p8-pWi Distance (mm) I r5 5 9 15 HRC max. 48 48 47 46 HRC min. 40 39 37 34 prEN 2919 Page 5 25 40 43 41 31 29 1 Yondition
5、and Heat treatment Reference Jominy hardenability (Hardeniiig temperature : E60 2 SOC) Designation Notes Typical USO 2 The rules governing the designation of semi-finished products are indicated in standard EN 2600. When the codified designation is used, the identification code shall be as follows :
6、 Material staudard number Letter code (see 1.2) Appropriate dimensional standard code (see 5.3) Data concerning dimension (see EN 2600) I) Testing requirements for the simulated case hardening test will be contained in the EN standard 2069 “Inspection and testing requirements .,.I on the occasion of
7、 the next tevision : one bar per batch. The tensile test piece will be taken in longitudinal direction from the core for bars of 11 and 30 mm diameter; for those of 63 mm diameter at 12,5 rnm distance from the surface. Other sections and larger diameters will be rolled or forged to these dimensions. 2) Optional test nigh stressed carburized parts Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
