1、AECMA STANDARD NORME AECMA AECMA NORM prEN 3520 Edition P 2 November 1994 UDC: EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 lssy-les-Moulineaux Cedex- Tel. (1) 47 .36.98. 76 Supersedes issue P 1 March 1988 Descript
2、ors : ENGLISH VERSION Serie aerospatiale Acier FE-PL21 05 Elabore a I air Adouci Demi-produits destines a Ia forge a ou D 300 mm Aerospace series Steel FE-PL21 05 Air melted Softened Forging stock a or D :$; 300 mm Luft- und Raumfahrt Stahl FE-PL21 05 Lufterschmolzen WeichgegiUht Schmiedevormaterial
3、 a oder D 300 mm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europeenne des Constructeurs de Materiel Aerospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned
4、 Technical Committee following comment by the Member countries. 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
5、 signature of the AECMA Standard Checking Centre (NPS) and 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. Nota- Extra copies can be supplied by B.N.A.E.- Technopolis
6、54 199, rue Jean-Jacques Rousseau- 92138 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication 1994-11-18 Comments should be sent within six months after the date of publication to AECMA Technopolis- 175, rue Jean-Jacques Rousseau 92138 lssy-les-Moulineaux Cedex- FRANCE C5 Chairman Mr Odorico a
7、ecma 1994 Page 2 prEN 3520 : 1 994 Page 3 prEN 3520 : 1994 0 Introduction For the use of this standard, see EN 2500-5. 1 Scope This standard specifies the requirements relating to forging stock a or D :s: 300 mm softened in steel FE-PL21 05 for aerospace applications. 2 Normative references This Eur
8、opean Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications
9、 apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2003-2 EN 2157-2 EN 2500-5 ASTM E45-87 Test methods for steel products- Part 2 : lzod impact test- Aerospace series 1) Aerospac
10、e series- Steel forging stock and forgings- Technical specification- Part 2 : Forging stock Aerospace series - Instructions for the drafting and use of metallic material standards -Part 5 : Specific requirements for steel 2) Standard - Practice for determining the inclusion content of steel 3) 1) Pu
11、blished as AECMA Standard at the date of publication of this standard 2) Published as AECMA Prestandard at the date of publication of this standard 3) This standard is published by : American Society for Testing and Materials (ASTM), 1916 Race St., Philadelphia, PA 19 103 Page 4 prEN 3520 : 1994 1 M
12、aterial designation Steel FE-PL2105 2 Chemical Element c Si Mn p s Cr Mo Ni AI Fe composition min. 0,27 0,15 0,45 - -0,50 0,45 2,30 0,015 Base % max. 0,35 0,35 0,70 0,025 0,015 0,80 0,65 2,80 0,050 3 Method of melting Air melted 4 Form Bar for machining Method of production -Umit dimensions (mm) aor
13、Ds300 5 5.1 Technical specification EN 2157-2 5.2 Dimensional standards -6 6.1 Delivery condition Softened and heat treatment -6.2 Delivery condition code u 7 Use condition Delivery condition and heat treatment -Characteristics 8 Sample Reforged or machined to De size Test piece 12,5 form surface I
14、Mid radius I Mid radius Heat treatment Reference heat treatment : see line 29 1) TestA Test B 2) Test C 2) 9 Dimensions concerned mm D8S40 Des 150 Des 150 10 Thickness of cladding on % -each face 11 Direction of test piece L 12 Temperature c Ambient I-13 Proof stress Rp0,2 MPa 1030 880 690 I-14 T St
15、rength Rm MPa 1230 S Rm s 1420 1080 s Rm s 1280 880 s Rm s 1080 I-15 Elongation A % 9 10 12 r.re Reduction of z % - - -area 17 Hardness H - 363SHBS415 311 sHBS388 255 s HB s 321 18 Shear strength Rc MPa -19 Bending k - -20 Impact strength 27 J 3) 33 J 3) 54 J 3) 21 Temperature c - - -22 Time h - -23
16、 Stress era MPa - -24 c Elongation a % - - -25 Rupture stress OR MPa - -26 Elongation at A % - -rupture 27 Notes (see line 98) 1) 2) 3) 29 Reference heat treatment -44 External defects -50 Cleanliness/ -Inclusion content 1 7 61 Internal defects -6 97 Designation -98 Notes -99 Typical use -TestA: Tes
17、t 8: Hardened and tempered Hardened and tempered 830 c 8 870 c 1 oa 830 c 8 870 c 1 oa +tempered 8 515 c +tempered 8 555 c See EN 2157-2 See EN 2157-2 ASTM E45 : 1987 Method D Page 5 prEN 3520 : 1994 Test C: Hardened and tempered 830 c 8 870 c 1 oa +tempered 8 595 c Acceptance criteria for micro-cle
18、anness of air melted, carbon and low alloys steels Worst field rating. No specimen shall The average of all the tests on a given cast contain inclusions following 4. exceeding the shall not execeed the following. Thin Heavy Thin Heavy A2! A2 A2 Ad 83 82! 82! 82 C2! C2 C2 cd D2 D2 od oq See EN 2157-2 Material 1 00 mm may be tested either on the product or on an earlier stage of manufacturing -1) Test sample to be heat treated at 08 size. 2) If required by the purchaser order. 3) lzod test as per EN 2003-2. 4) 83 f thin may be permitted at a rate of one per sample examined. -
