1、I- a a O o: w U v) W L3 w 2 z W .w 8 a 9 o 3 w z I- u 8 U J 8 a w i- cl w A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 2258 Edition 1 January 1983 ENGLISH VERSION CIRCULAR TUBES IN ALUMINIUM ALLOYS FOR FLUIDS DIMENSIONS AEROSPACE SERIES TUBES CIRCULAIRES EN ALLIAGES DALUMINIUM PO U R CA
2、NAL IS AT I O NS DIMENSIONS SERIE EROSPATIALE LUFT- UND RAUMFAHRT LEITUNGSROHRE, RUND MASZE AUS ALUMINIUM-LEGIERUNGEN This industrial standard for the aerospace sector has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published
3、 on yellow paper in three equivalent versions (English, French, German). It will be submitted to CEN (European Committee for Siandardization) as a draft European Standard. AECMA PREN2258 83 m LOL23LL 0002676 L m prEN2258 Page 2 CONTENTS 1 SCOPE AND FIELD OF APPLICATION 2 REFERENCES 3 MATERIALS 4 REQ
4、UIRED CHARACTERISTICS 5 DESIGNATION 6 TECHNICAL SPECIFICATION ,E.C.M.A. STANDARD prEN2258 Page 3 prEN2258 1 2 3 4 0 CIRCULAR TUBES IN ALUMINIUM ALLOYS FOR FLUIDS - . DIMENSIONS SCOPE AND FIELD OF APPLICATION This standard specifies the dimensions and tolerances of circular extruded and drawn alumini
5、um alloy tubes for fluids used in ae- rospace construction. REFERENCES IS0 2964-1974, Aircraft. Tubing outside diameters and thicknesses. EN2070-1, Inspection and test requirements for aluminium and aluminium alloy wrought products. Part 1 : general requirements 1) Metric dimensions EN2070-5, Inspec
6、tion and test requirements for aluminium and aluminium alloy wrought products. Part 5:. inspection and test requirements for pressure-tested tube 1). MATE RI ALS The materials are defined in the material standards. REQUIRED CHARACTERISTICS 4.1 Dimensions The recommended external diameters and thickn
7、esses of tubes taken from IS0 2964 are given in table 1. When other sizes are required they shall be taken from IS0 2964. The lengths are at the discretion of the user, O i) In preparation -_s_ AECMA PREN2258 83 = LOLZ3LL 0002678 5 prEN2258 Page 4 TABLE 1 - Recommended dimensions, section, mass Dime
8、nsions in millimetres liame ter D Cross sectional area 1)l Thick- of flow (mm2 ness a Diame- ter D Cross sectional area 1 Thick- ness a of annulus (mm2 1 of mass annulus (kg/m) 2) (mm2 4/90 i 0,0138 of flow (mm2 725,8 mass (kg/m) 2) 78,4 0,220 8,04 I 0,0225 8,29 i 0,023 - 1 706,9 97,4 116.1 0,273 0,
9、325 0,428 0,528 _- 32 688.1 10.55 I 0,030 152, 188,5 _ 651,4 61 5,7 10,s 0,029 13,l I 0,037 I 6 11 58,l 0,276 98,5 122,5 15.7 0.04.4 11 34,l 0,343 40 11 10,4 146,3 193,o 238,8 123,6 0,409 0,540 0,669- 0,346 - - 8 18,l 1 0,051 1063,6 101 7,9 1839,8 22,O I 0,062 IO 17,7 1 0,050 50 23,l 1 0,065 1 1809,
10、6 1720,2 1662,O 153,9 243,3 301,6 0,431 0,68 I 0,845 _- 1 I 50,3 28.3 1 0,079 1,2 1 45,4 0,6 I 91,6 33,2 0,093 21,s 0,060 28,l 0,079 34,G 0,097 _- =I- 2960,9 0,438 156,3 232,9 194,8 0,545 0,652 - 2922,5 2884,3 63 12 2808,6 308,G 0,864 1,6 i 60,8 0,8-! 162,8 1 1-153,9 1,6 i 128,7 0,8 i 265,9 -. _-I 2
11、 2734.0 1,073 1,330 _- 383,3 475,2 16 35,2 I 0,107 47,l I 0,132 72,4 1 0,203 _ -_- 2642 .I 3674,5 1733 0,487 1 21 6,8 363 1,7 3589,l 3504,U 3421,2 4632,s 4536,s 4417,9 7359,4 7238,2 7088,2 -_ _- - 0,607 0,726 70 .259,4 343,8 1 254,5 1,2 i 243,3 .-.-i 59,7 1 0,167 70,9 0,198 92,5 0,259 60,8 0,170 _ _
12、 _- _ 75,4 1-0,211 0,963 1 ,I 96 20 427,3 1,6 ! 221,7 1.1 03 394,l 490,l 608,7 -_ 0,8 1 430,O 1 i 415,5 i -_ 80 1,372 . 1,704 -.- 25 1,2 i 401,l 89,7 0,251 1,385 494,6 615,7 765,8 - 1i7,6 I; 0,329 I 1,G I 373,2 - i - 1,724 2,144 -_ i) Values for information only 2) Calculated on the basis of 2,8 i-
13、 -: . AECMA PREN2258 83 IB 1012311 0002679 7 I I _ prEh2258 Page 5 4.2 Dimensional tolerances Tolerances on external diameter, thickness and length of tubes are given in tables 2, 3 and 4. TAB LE 2 - External diameter tolerances I Diameter D 3 1000 +6 O 4- IO O AECMA PREN2258 83 1012311 O002680 3
14、H -.“ - 2 i prEN2258 Page 6 4.3 Geomatrical tolerances 4.3.1 Concentricity The concentricity shall be contained within the tolerances allowed for the thickness in table 3. 4.3.2 Circularity This is the difference between the maximum and minimum diameters at the same section. It shall be contained wi
15、thin the tolerance on diameter in table 3. 4.3.3 Straightness 1,7 mm 1 For tubes supplied in straight lengths the departure from straightness shall not exceed 1,7 mm per 1000 mm. 5 DESIGNATION The designation of tubes defined in this standard may include ;he following elements: name, number of material standard, dimensions (external diameter, thickness, length), number of dimensional standard. 6 TECHNICAL SPECIFICATION 1) Tubes supplied to this standard shall conform with the requirements of EN2070-1 ) and EN2070-5 ,
