1、A.E.C.M .A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM Edition approved for publication prEN 3363 Issue P 1 March 1988 Comments should be sent within six months C5 Chairman after the date of publication decision DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Male
2、sherbes, 75008 PARIS - TEL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Steel FE-CM68 Solution treated Rrn 485 MPa Sand or investment casting Srie a,;ospatiale Acier FE-CM68 Mis en solution Rm 2 485 MPa Pices moules Moulage sable ou cire perdue Lu- und Raumfahrt Stahl FE-CM68 Isun
3、gsgeglht Rm 2 485 MPa Gupstcke Sandgup oder Wachsausschmelzung This Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technicall
4、y approved b y the experts of the concerned AECMA Commission following comment by the Member countries. Subsequent to the publication of thispre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identificatio
5、n of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitte as a draft European Standard to CEN (European Committee for Standardization) for final vote. J. ODORICO I A.E:C.M.A
6、. I 88, Bd. Malesherbes 31 March 1988 75008 PARIS - FRANCE aecma 1988 AECMA PREN3363 88 U LOL23Ll 0005570 _ O A m _ prEN 3363 Page 3 1 Scope and field of application This standard specifies for the aerospace application, the mechanical properties for sand or investment casting, solution treated, in
7、steel FE-CM68. Unless otherwise specified by the drawing, the order or the inspection schedule, the present standard shall be used in conjunction with the referenced EN standards. 2 References EN 2032-1, Aerospace series - Conventional designation for metal 1 ic materials EN 2032-2, Aerospace series
8、 - Metallic materials - Part 2 - Coding of material in delivery heat treatment conditions EN 2103-2, Aerospace series - Steel, nickel and cobaTt alloy remelting stock and castings - Technical specification - Part 2 - Remelting stock EN 2103-3, Aerospace series - Steel, nickel and cobalt alloy remelt
9、ing stock and castings - Technical specification - Part 3 - Pre-production and production castings EN 2500-5, Aerospace series - Guidelines for the preparation and use of standards for metallic materials - Part 5 - Steels 1) EN 3366, Aerospace series - Steel FE-CM68 - As manufactured - Reference hea
10、t treatment : solution treated - Remelting stock. 1) In preparation Previous page is blank AECMA PREN33b3 88 W I10323L3 0005573 2 W prEN 3363 Page 4 Ni Nb + Ta Fe C si Mn P s Cr Mo - - - - - 9,oo 10 x IC 17,OO O,10 1950 2sOO 0904 0,04 20.00 0,75 12.00 1.35 Rem. 2 Element min. ma. Chemical Compositlo
11、n % I # 1 Method of melting See EN 2103-2 Form Method of production Llmlt dimensions Investment or sand casting - - EN 2103-3 - 5.1 Technical speclficatlon 5.2 Dlmensionel standard 5.3 Dlmenslonal standard code - Sol ut ion treated 6.1 Condltion end 1050 5 O 5 1080C / AC or faster heat treatment del
12、ivery 6.2 Delivery condition code U :ondition and Heat treatment U se As delivered rest piece tieat treatment jam p I I ng Dimensions :oncerned Oe mm In the delivery condition rhlckness of :laddina on each face 3irection of sample Separate cast or appended test pieces I Temperature 10 oc Room teiiip
13、erature MPa - 210 Proof UI Stress RPQ: I) _- - 2 Strength R, I- w- Elongatton A .- I i 485 % - 18 Reduction of area I- % IHB Hard ness - 180 I Rc Shear Strength MPa Ik Bending Impact IK - n w W U u - No see Temperature 8 Tlme t Stress Da Elongatton a Rupture Stress Elongatlon at rupture - A 3s Inn 98 % *) 1 MPa = 1 N/mm2 (ID 8 O I prEN 3363 Page 5 1 Remelting stock Designation Notes .Typical use 2 In accordance with EN 3366
