1、A. E. C. M .A. STAN DAR D NORME A.E.C.M.A. A.E.C.M.A, NORM Edition approved for publication 22.April 1986 prE N 275 9 Issue P 1 April 1986 Comments should be sent within six months C5 Chairman Mr HILAIRE after the date of publication decision A.E.C.M.A. 88, Bd. Malesherbes 75008 PARIS - FRANCE DIT P
2、AR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TL. 45-63-82-85 ENGLISH VERSION r Aerospace series Steel FE-PL80 I900 6 Rm 21 O0 MPa Forging De 75 mm 1: Srie arospatiale Luft- und Raumfahrt Acier FE-PL80 Stahl FE-PL80 1900R2100 MPa Pices for
3、ges et matrices De 75 mm I900 R, 2100 MPa Gesenk- und Freiformschmiedestcke De 75 mm This standard is initially published on green paper for the needs of AECMA-Members (Association Europenne des Constructeurs de Matriel Arospatial), It has been technically approved by the experts of the concerned AE
4、CMA Commission following comment by the manufacturers of the Member countries. After examination and signature of the AECMA Standard Checking Centre NPSI and formal agreement of the Official Services of the Member countries it will be published in its final version on yellow paper as an AECMA Standa
5、rd. AECMA PREN2757 86 W LOL23LL p0041_20B prEN7759 Page 3 Chmkrl Elanont Compoiltlon % mu. 1 I I 4 2 3 Consumable electrode remelted Forging Des 75 mm - Fon Method of pioductlon Llrnlt dlrnrnrloni 6.1 Tochnlcal apocltlcrtlon 6.2 Dlmrnilonil standard 6.3 Dlmrnilonal mtandard code Normalized and softe
6、ned 6.1 Camlltlon and haat treatment drlkrry 915 d O ,C 935OC / t 3 1 h / AC + softened _ _ B Hardened and tempered 6.2 Ddivarv condttlonsodd Condltlon and Httrrammnt , um TM plwr Huit troatmmnt . Smpllng - Delivery condition - .i. 860 ,L 0 6 880OC / t a 1 h / OQ + Tempered 295 4 0 e 305OC / t 3 2 h
7、 / AC + Tempered 295 4 O & 305OC / t D 2 h / AC Reference Bar : D = 16 mm Normalized Hardened (see line 29) . and softened and tempered bimendoni concernid 4 75 u Thlcknnr of clcddlng on rmh fm - I L I T I L Dlroctlon of mplr Twnprriturr Strrnoth Elongstlon Reduction of arem Room temperature Rm IMPa
8、 - A% I p 25 I I I I 52 6 HRC4 55 590 HV 635 590 d HV Q 635 HB Q 240 Hltdnni Shear Strrngth Bmdlng kI - Irnpmt T Imo W Strow w E O Elongalon Ruptu Streu - #I * Elonpstlon et rupture Nottii I AECMA PREN2759 86 1012311 O004121 T m prEN2759 Page 4 1 Condition and eat treatment ief erence Irain size 1G I - Deslgnetion Notes Typicel use I i 2 3 4 Hardened and tempered 870 5 10C / t = 1 h / OQ + Tempered 300 2 5% / t = 2 h / AC + Tempered . 300 5 5OC / t = 2 h / AC . 5 (some grains of 3 permitted) i) In preparation. 2) Optional test. High strength structural parts
