1、STD-AECMA PREN 42b7-ENGL L99b m LOL23LL OOLL4LB 784 m AECMA STANDARD NORME AECMA AECMA NORM prEN 4267 Edition P 1 June 1996 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 6-1 200 BRUXELLES - Tel. (32) 2 775 81 1 O - Fax. (32) 2 775 81 11 ICs : ENGLISH VERSION A
2、erospace series Round bar in titanium and titanium alloys Diameter 6 mrn 5 D I 160 mm Dimensions Srie arospatiale Barres rondes en titane et alliages de titane Diamtres 6 mm I D 5 160 mm Dimensions Luft- und Raumfahrt Rundstangen aus Titan und Titanlegierungen Durchmesser 6 mm I D I 160 mm Mae This
3、“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 concerned Technical Committee following comment
4、 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 signature of the AECMA Standard Check
5、ing 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. I Nota - Extra copies can be supplied by E.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Roussea
6、u - 921 38 ISSY-LES-MOULINEAUX CEDEX C6 Chairman I Comments should be sent within six months after the date of publication to I Edition approved for publication AECMA Gulledelle 94 B-1200 BRUXELLES Mr Grgoire I I I aecrna 195 STD.AECMA PREN qZb7-ENGL Lb LOL23Ll 003iLIL7 ALO m Page 3 prEN 4267 : 1996
7、 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. 1 Scope I This standard specifies the dimensions and tolerances of round bars, in titanium and titanium alloys, diameter
8、6 mm 5 D I 160 mm, for aerospace applications. 2 Normative references This European 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
9、references, subsequent amendments to or revisions of any of these publications 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 3848 Aerospace series - Semi-finished metallic pr
10、oducts - Method of measuring form deviations 1) EN 4258 Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use 1) 3 Form See figure 1. i- e I Figure 1 Previous page is blank 1) Published as AECMA Prestandard at the date of
11、publication of this standard Page 4 prEN 4267 : 1996 6 8 10 4 Recommended dimensions and mass 0,13 0,23 0,35 4.1 Diameter and mass See table 1. 14 16 Table 1 0,69 0,90 D Nominal mm 38 40 45 50 60 Linear mass 1) kg/m 5,10 5,65 7,16 8,83 12,7 63 70 80 I 12 I 0,51 14,0 17,3 22,6 90 1 O0 I 18 I 1,15 28,
12、6 35,3 I 20 I 1,41 160 I 22 I 1,71 90,5 I 24 I 2,04 I 26 I 2,39 I 28 I 2.77 I 30 I 3,18 I 32 I 3,62 I 34 I 4,09 I 36 I 4,58 I 110 I 42,8 I 120 I 50,9 I 125 I 55,2 I 140 I 69,3 I 150 I 79,5 4.2 Length The order shall specify that round bars may be supplied in fixed or in random lengths. In the event
13、of a supply of random lengths the minimum and maximum values for the lengths shall be specified on the order. STD*AECMA PREN 42b7-ENGL L99b LOL23LL OOLL421 Li77 6IDI 12 12 600 1 5.1 Dimensional tolerances 5.1 .I Diameter See table 2. Table 2 Dimensions in millimetres 1 Tolerances 1 Diameter k 0,50 f
14、 l,o l 1 1 5.1.2 Length See table 3, only applicable to bars supplied in fixed lengths. Table 3 5.2 Geometric tolerances 5.2.1 Straightness 5.2.1.1 See EN 3848. Method of measurement and symbols STD-AECMA PREN iZb7-ENGL L77b D LOL23LL OOLLL12.2 305 Diameter D I 80 D 80 Page 6 prEN 4267 : 1996 Straig
15、htness deviation : Y1 per metre Y2 on any length X2 1) 15 I2,5 13 I1,5 5.2.1.2 Tolerances 5.2.1.2.1 Bars in annealed condition See table 4. Diameter D I 80 Straightness deviation : Y1 per metre Y2 on any length X2 1) I10 I7,5 1) X2=400mm I Diameter 6rD1 12 12 80 To be specified by agreement between manufacturer and purchaser 1) X2=400 mm 5.2.2 Roundness 5.2.2.1 See EN 3848. Method of measurement and symbol 5.2.2.2 Tolerances See table 6. Table 6 Dimensions in millimetres I0,50 I I 120 D I 160 I 5 l,o I
