1、AECMA STANDARD NORME AECMA AECMA NORM prEN 4088 Edition P 1 November 7997 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Steel FE-PL51 O1 (1 3M
2、oCrNiV4-4-3-1) Vacuum induction melted and vacuum arc remelted Carburized, hardened, sub-zero treated and tempered Bar for machining De I 30 mm 1 315 MPa 5 Rm I1 650 MPa Srie arospatiale Acier FE-PL5 1 O 1 (1 3MoCrNiV4-4-3-1) Fusion par induction sous vide et par arc sous vide Cment, durci par tremp
3、e, trait par le froid et revenu Barres pour usinage De 5 30 mm 1 315 MPa I Rm I 1 650 MPa Luft- und Raumfahrt Stahl FE-PL5101 (13MoCrNiV4-4-3-11 Vakuurninduktionserschmolzen und vakuumbogenerschmolzen Aufgekohlt, gehrtet, tieftemperatrbehandelt und angelassen Stangen zur spanabhebenden Formgebung De
4、 I 30 mm 1 315 MPa I R, Il 650 MPa This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concern
5、ed 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 a
6、nd 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 European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopo
7、lis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX I Comments should be sent within six months after the date of publication to I Edition approved for publication 1997-1 1-28 AECMA Gulledelle 94 B-1200 BRUXELLES C5 Chairman Mr Odorico aecrna 199 STD*AECMA PREN 4OBB-ENGL 1777
8、LO32322 0034240 230 M Page 3 prEN 4088: 1997 O Introduction This standard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-5. 1 Scope This st
9、andard specifies the requirements relating to: Steel FE-PL51 O1 (1 3MoCrNiV4-4-3-1) Vacuum induction melted and vacuum arc remelted Carburized, hardened, sub-zero treated and tempered Bar for machining De I 30 mm 1 315 MPa 2 Rm I1 650 MPa for aerospace applications. 2 Normative references This Europ
10、ean 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 a
11、pply 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 2002-22 Aerospace series - Test methods for metallic materials - Part 22: Plane strain fracture toughness test 1) EN 2043 Aerospa
12、ce series - Metallic materials - General requirements for semi-finished product qualification (excluding forgings and castings) 2) EN 4235-3 Aerospace series - Steel wrought products - Technical specification - Part 3: Bars and sections 2) EN 4258 Aerospace series - Metallic materials - General Orga
13、nization of standardization - Links between types of EN standards and their use 21 EN 4436 Aerospace series - Steel - Test methods - Determination of 6 ferrite content 2) EN 4500-5 Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 5: Specific ru
14、les for steel 2) 1 I In preparation at the date of publication of this standard 2) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank 4.3 9 Il 12 13 - STD*AECMA PREN 4088-ENGL 1797 W LOL23LL OOLq24L 177 W Page 4 prEN 4088: 1997 Method of melting Vacuum
15、induction melted and vacuum arc remelted De 5 30 Dimensions concerned mm aorDI100 each face Direction of test piece Thickness of cladding on yo - - - See EN 4235-3 Temperature 6 “C Ambient Ambient Proof stress R,0,2 MPa - 2 1 065 I Form -1 14. T 4 Bar for machining Strength R, MPa - 1 315 5 R, 5 1 6
16、50 2 10 - Elongation A Yo Ihilethod of production 16 17 18 I Limit dimension(s) I mm I 2 30 Reduction of area Z YO - Hardness I 255 HB 409 5 HV 5 523 Shear strength I Rc IMPa - khnical specification EN 4235-3 j.2 I Delivery condition code 7 I Use condition Heat treatment Softened 6= 680 C I t = 12 h
17、 I AC A Carburized, hardened, sub-zero treated and tempered Delivery condition + Carburized at 840 “C I 61 980 “C + Preheat in salt bath or vacuum 800 “C I 6s 860 “C I t = 10 min I Heat in salt bath or vacuum 1060 “C I 19s 1120 “C I Holding time in accordance with cross-section I Quench into salt ba
18、th 560 “C I 6 I 620 “C to temperature balance and immediately AC to ambient temperature or gas quenching in nitrogen or argon to ambient temperature or OQ 2) + Sub-zero treat -80 “C I 61 -70 “C It = 2 h + Temper three times 530 “C I 61 570 “C I t = 2 h i AC Characteristics 3.1 1 Test sample(s) I See
19、 EN 4235-3 I See EN 4235-3 I 3.2 1 Test piece(s) I See EN 4235-3 I Heat treated before machining I 3.3 1 Heat treatment I Deliverv condition I See line 29 I I I .I dl I dl I I I I I I 19 I Bending lkl-1 - I - 20 I Impact strength I I dl I - oa MPa a% - Rupturestress - OR MPa Elongation at A % - rupt
20、ure I *) 1) 2) 27 I Notes (see line 98) - - STD*AECMA PREN 4088-ENGL I997 E LDL23LL O034242 O03 = 7 1 Page 5 prEN 4088: 1997 G L 5, some G L 3 accepted up to 5 % max. area EN 2002-22 7 Dimensions L-R C-R MPa drn mm MPa dm - 40sDs60 244 7 - Category 5 See EN 4235-3 7 Class 6 Reference heat treatment
21、Hardened, sub-zero treated and tempered Harden 1 060 “C I BI 1 120 “C / t = 30 min / OQ + sub-zero treat -80 “C I 81 -70 C I t = 2 h + Temper three times 530 “C I BI 570 C / t = 2 h / AC Microstructure -I See EN 4235-3 I EN 4436 31 Cross section 51 See line 29 71 &ferrite content I 3 % -I See EN 423
22、5-3 Grain size 21 Each product Fracture toughness (KIc) One per batch 61 Ambient I D60 I - I 244 External defects -I See EN 4235-3 II Visual Cieaniinesslinclusion content (microcieanness) -I See EN 4235-3 Macrostructure internai defects -I See EN 4235-3 Marking inspection See EN 4235-3 See EN 4235-3
23、 *) p.p.m. 1) May be supplied with a or D s I O0 mm. 2) By agreement between manufacturer and purchaser. Dimensional inspection Notes Typical use STD-AECMA PREN 4088-ENGL 1777 = LO123LL 0014243 T4T Page 6 , pr 4088: 1997 roduct qualification See EN 2043 halification programme to be agreed between manufacturer and purchaser.
