1、CEN PREN*37bL 94 M 3404589 0062326 301 Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM C5 Chairman Comments should be sent within six months after the date of publication to prEN 3761 Edition P1 March 1994 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL
2、Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC Descriptors : ENGLISH VERSION Aerospace series Heat resisting alloy FE-PA2601 Softened and cold worked Bar for forged fasteners DI50mm 1100 MPa I Rm I1300 MPa Srie arospatiale Alliage rsistant
3、chaud FE-PA2601 Adouci et croui Barres pour lments de fixations forgs DI50mm 1100 MPa 5 R, I 1300 MPa Luft- und Raumfahrt Hochwarmfeste Legierung FE-PA2601 Weichgeglht und kaltverfestigt Stangen zum Stauchen fr Verbindungselemente D550mm 1100 MPa I R, I 1300 MPa This “Aerospace Series“ Prestandard h
4、as 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 technically approved by the experts of the concerned Technical Committee following comment by the Member coun
5、tries. Subsequent to the publication of this prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) an
6、d formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1994-03-31 AECMA Technopolis - 1 75, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE M. Odorico a
7、ecma 1994 CEN PREN*37bL 74 = 3404589 0062327 248 = Page 3 prEN 3761 : 1994 O Introduction For the use of this standard, see EN 2500-3. 1 Scope This standard specifies the requirements relating to bar for forged fasteners, D I 50 mm, softened and cold worked, heat resisting alloy FE-PA2601, 1 1 O0 MP
8、a I R, S 1300 MPa, for aerospace applications. 2 Normative references EN 2002-1 6 Aerospace series - Test methods for metallic materials - Part 16 : Penetrant inspection 1) EN 2500-3 Aerospace series - Instructions for the drafting and use of metallic material standards - Part 3 : Specific requireme
9、nts for heat resisting alloys 2) EN 3235-3 Aerospace series - Heat resisting alloys - Wrought products - Technical specification - Part 3 : Bar and section 2) Previous page is blank 1 ) In preparation at the date of publication of this standard 2) Published as AECMA Prestandard at the date of public
10、ation of this standard C Si Mn P S AI B Cr Mo - 30.1 13.5 1,0 0.08 1,0 2,O 0,020 0,016 0,36 100) l6,O 1,6 Ni Pb Ti V Fe 24.0 - 1.9 0,lO . Base 27,O 60“) 2,3 0,60 6 6.1 Delivery condition Softened, cold worked and ground 6.2 Delivery condition code U 8 Sample Cut from bar Cut from bar Test piece Heat
11、 treatment Delivery condition See line 29 9 10 11 Dimensions concerned mm D 5 60 D S 60 Thickness of cladding % on each face Direction of test Diece CEN PREN*37b1 94 D 3404589 00b2328 184 Page 4 prEN 3761 : 1994 1 Material designation 2 Chemical I Element Composition 1 :nii. % 3 - P Rm S 13W Hardnes
12、s I277 HB 341 S HB 5 410 Shear strength & MPa ImDact strenath Bending k- - Temperature I 9 I OC 1 I 660 I Stress u, MPa Elongation a % Rupture stress UR MPa 480 1) 2) Elongation at A % 24 rupture otes (see line 98) “1 1) 2) C CEN PREN*37bL 94 m 3404589 0062329 010 m 19 14 Reference heat treatment Gr
13、ain size I4 3 7 External defects L and LT 6 or finer - No duplex structure il 1 Macrostructure See EN 3236-3 EN 2002- 16 il - 7 Internal defects Flat bottom hole D = 1.2 rnm Designation - Notes “i ppm 1 ) Proportional round test piece 2) Stress may be increased after 48 h to promote rupture. Typical use Page 5 prEN 3761 : 1994 I Precipitation treated Delivery condition + 720OC I t = 16 h I AC See EN 3236-3 21 One per batch -I See EN 3236-3 71 As stated on the order -I See EN 3236-3 - -I I
