1、CEN PRENJ3706 74 = 3404587 0062347 036 Edition approved for publication I 994-02-28 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE prEN 3906
2、Edition P 1 February 1994 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Martensitic corrosion resisting steel FE-PM3801
3、 Air melted Solution treated Bar DI50mm For the manufacture of fasteners 1100 MPa I R, 5 1300 MPa Srie arospatiale Acier martensitique rsistant la corrosion labor lair Mis en solution Barres DI50mm Pour la fabrication dlments de fixation 1100 MPa I R, I 1300 MPa FE-PM3801 Luft- und Raumfahrt Korrosi
4、onsbestndiger martensitischer Stahl Lufterschmolzen Lsungsgeglht Stangen DS50mm Fr die Herstellung von Verbindungselementen 1100 MPa 5 R, I1300 MPa FE-PM3801 This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Ar
5、ospatial). 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 countries. Subsequent to the publication of this prestandard, the technical content shall not be changed to a
6、n extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre INPSI and formal agreement of the Official Services of the Member countries it will be submitted as a draft Europ
7、ean Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX C5 Chairman M. Odorico aecma 1994 CEN PREN*3906 94 3404589 00b2348 Ti2 = Page 3 prEN 3906
8、 : 1994 O Introduction For use of this standard, see EN 2500-5. 1 Scope This standard specifies the requirements relating to bars D I50 mm, solution treated, in air melted martensitic corrosion resisting steel FE-PM3801, for the manufacture of fasteners 1 1 00 MPa I Rm 5 1300 MPa, for aerospace appl
9、ications. 2 Normative references EN 2500-5 Aerospace series - Instructions for the drafting and use of metallic material standards - Part 5 : Specific requirements for steel 1) EN 2600 Aerospace series - Designation of metallic serni-finished products - Rules 1) EN 4235-3 Aerospace series - Steel -
10、Wrought products - Technical specification - Part 3 : Bar and section 1) Previous page is blank 1) Published as AECMA Prestandard at the date of publication of this standard CEN PREN*390b 94 = 3404589 00b2349 909 1 Material designation 2 Chemical Element composition min. max. % 3 Method of melting M
11、artensitic corrosion resisting steel FE-PM38Q1 C Si Mn P S Cr Mo Ni Cu Nb + Ta Fe - 15,O - 3,O 3.0 5 x C Base - - - - 0,07 1,00 1,00 0,040 0,030 17,5 0,50 5,O 5.0 0,45 Air melted Form Method of production 5.1 Technical specification 5.2 Dimensional standards Bars - EN 4235-3 - D 5 50 I Limit dimensi
12、ons (mm) 6 6.1 Delivery condition Solution treated 6.2 Delivery condition code 1 025 OC c 01 1 055 OC I lhsts4h IAQor OQS20 OC U 7 Use condition and Heat treatment Delivery condition - 8 Sample Cut from bar Test piece - Heat treatment Delivery condition - 9 Dimensions concerned mm 10 Thickness of cl
13、adding % - on each face - 11 Direction of test piece Cut from bar See line 29 - - - L 131 12 I Temperature I 0 I OC 4 Ambient 1 Proof stress . Strength Elongation 2 1020 2 1100 2 11 - F$,O,2 MPa R, MPa A% - - I I I I a44 - 18 Shear strength 19 Bending 350 S HB S 410 171 Hardness I HB 1 363 I - R, MP
14、a - k- 20 21 22 - - Impact strength - Temperature 8 OC Time h - 23 - 24 25 26 27 - - - Stress Qg MPa - C Elongation a% - Rupture stress QR MPa Elongation a A % - rupture Notes (see line 98) - CEN PREN*390b 94 W 3404589 0062350 620 Page 5 prEN 3906 : 1994 Reference heat treatment Microstructure Exter
15、nal defects Macrostructure Internal defects Designation Notes Typical use Precipitation heat treated 535 OC 14h I AC t3 = 20 OC - 3 4 In a longitudinal plane passing by the center Cut from the end of the bar 5 See line 29 7 The &ferrite content shall not exceed 5 %. -I See EN 4235-3 See EN 4235-3 - See EN 4235-3 - 7 FBH = 2 See EN 2600
