ASD-STAN PREN 2768-1988 Aerospace Series Steel FE-PL79 Carburized Hardened and Tempered 1180 Less Than or Equal to Rm Less Than or Equal to 1550 MPa Forgings De Less Than or Equal .pdf

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1、 - - AECMA PREN2768 88 W 3032333 0004343 9 MI _ A. E, C. M .A. STAN DARD prEN 2768 NORME A.E.C.M.A. Issue P 2 A.E.C.M.A. NORM March 1988 EDIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 UDC : Key words : Supersedes issue

2、PI April 1986 ENGLISH VERSION Aerospace series Steel FE-PL79 Carburized, hardened and tempered 1180 1000 - 930 - 830 - 1300 1250 5 Rm 5 1550 1180 35 - 35 2 40 363 5 HB 5 444 - 277 388 5 HE 5 451 353 5 HB i 429 _ AECMA PREN2768 88 a LOL23LL OOOL(/L(b-4 a, prEN 2768 Page 5 1 Jomi ny hardeiiabi 1 i ty

3、Forging stock Designation Notes Typical use Distance in nun 1,5 5 9 15 25 40 HRC max. 47 47 47 46 45 44 HRC min. 39 39 39 38 36 33 In accordance with EN 3522 1) Testing requirements for the simulated case hardening test. One per batch, The tensile test piece will be taken in longitudinal direction from the core for bars of 11 arid 30 nun diameter; for those of 63 m diameter at 12,5 m distance from the surface. Others sections and larger diameters will be rolled or forged to these dimensions, High stressed carburized parts (for ir gears)

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