1、ASD STANDARD NORME ASD ASD NORM prEN 4023 Edition P 2 December 2009 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition P 1 of April 1994
2、 and will supersede EN 4023:2001Descriptors: ENGLISH VERSION Aerospace series Pipe coupling 830 in titanium alloy Elbows 45 Srie arospatiale Systme de raccordement 830 en alliage de titane Raccords couds 45 Luft- und Raumfahrt Rohrverschraubung 830 aus Titanlegierung Winkelverschraubungen 45 This “A
3、erospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domai
4、n following member comments. 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 review by users and formal agreeme
5、nt of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a nation
6、al standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 15 December 2009 Comments should be sent within six months after the date of publication to ASD-STAN Mechanical Domain Copyright 2009 by ASD-STAN prEN 4023:2009 (E) 2 Contents Foreword2 1
7、Scope 3 2 Normative references3 3 Required characteristics.3 4 Designation 5 5 Marking .5 6 Technical specification .5 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STA
8、N defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4023:2009 (E) 3 1 Scope This standard specifies the characteristics of elbows 45, for pipe couplings 830, in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa. Temper
9、ature range: 55 C to 135 C. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docu-ment (including any amendments) applie
10、s. EN 2424, Aerospace series Marking of aerospace products EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods EN 3274, Aerospace series Pipe coupling 830 Thread end Geometric configuration EN 3275, Aerospace series Pipe coupling 830 up to 28 000 kPa Dynamic beam seal Metr
11、ic series Technical specification EN 3311, Aerospace series Titanium alloy TI-P64001 Annealed Bar for machining D 150 mm 1)EN 3312, Aerospace series Titanium alloy TI-P64001 Grade 2 Annealed Forgings De 150 mm 1)EN 3314, Aerospace series Titanium alloy TI-P64001 Solution treated and aged Bar for mac
12、hining D 75 mm 1)EN 3315, Aerospace series Titanium alloy TI-P64001 Solution treated and aged Forgings De 75 mm 1)ISO 5855-3, Aerospace MJ threads Part 3: Limit dimensions for fittings for fluid systems 3 Required characteristics 3.1 Configuration Dimensions Mass According to Figure 1 and Table 1. T
13、he values apply before lubricating. Dimensions not specified are at the manufacturers option provided that the qualification and acceptance requirements of EN 3275, type II are met. 3.2 Surface roughness According to Figure 1, unless otherwise specified in the design documentation. 1) Published as A
14、SD-STAN Prestandard at the date of publication of this standard. prEN 4023:2009 (E) 4 3.3 Materials According to EN 3311 or EN 3314, EN 3312 or EN 3315. 3.4 Surface treatment Lubrication: according to EN 2491, on threads and sealing faces. Prior to application of the lubricant, the surface shall be
15、abrasive blasted using non-metallic grit. Film thickness 0,005 mm to 0,013 mm. 3.5 Internal surface finishing Finishing shall give a radius R of 0,3 mm to 1,0 mm and a surface roughness of 0,8 m. Hand deburring is not permitted. Dimensions in millimetres Key aArea for marking bAcross flats s cAccord
16、ing to EN 3274, form C dThread eRadius of the complete internal junction shall be between R 0,3 to 1,0 Figure 1 prEN 4023:2009 (E) 5 Table 1 Dimensions in millimetres Code a Threadb e cl c s d Mass g/piece 4g6g 0,2 h13 max. 05 MJ10 1 0,9 16,3 8 5,0 06 MJ12 1,25 1,0 17,8 9 7,5 08 MJ14 1,5 1,4 20,8 11
17、 11,8 10 MJ16 1,5 1,8 21,8 13 15,2 12 MJ18 1,5 2,2 23,8 15 19,6 14 MJ20 1,5 2,4 23,8 16 23,9 16 MJ22 1,5 2,8 25,8 18 30,6 18 MJ24 1,5 3,2 27,8 21 38,6 20 MJ27 1,5 4,7 27,8 24 49,5 22 MJ30 1,5 4,3 30,8 27 64,0 25 MJ33 1,5 4,6 32,8 30 86,0 28 MJ36 1,5 5,3 34,8 34 105,0 32 MJ39 1,5 5,0 36,4 36 113,3 aC
18、orresponds to the pipe nominal outside diameter. bAccording to ISO 5855-3. cDrill depth dimension l e. dAcross flats. 4 Designation EXAMPLE Description block ELBOW 45 Identity block EN4023-05 Number of this standard Code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking According to EN 2424, style A and Figure 1. 6 Technical specification According to EN 3275, type II.
