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TU 14-3-675-78 Seamless steel tubes for aircraft
Standard: TU 14-3-675-78
Materials: 10, 20, 35, 45
Chemistry Composition
Grade
C, %
Si, %
Mn, %
Cr, %
Ni, %
S, %
P, %
Cu, %
10
0.07-0.14
0.17-0.37
0.35-0.65
0.15 max
0.30 max
0.040 max
0.035 max
0.30 max
20
0.17-0.24
0.17-0.37
0.35-0.65
0.25 max
0.25 max
0.030 max
0.025 max
0.30 max
35
0.32-0.40
0.17-0.37
0.50-0.80
0.25 max
0.30 max
0.040 max
0.035 max
0.30 max
45
0.42-0.45
0.17-0.37
0.50-0.80
0.25 max
0.30 max
0.040 max
0.035 max
0.30 max
Mechanical Properties
Grade
Tensile Strength, MPa
Yield Strength, MPa
Elongation, %
10
353 min
216 min
24 min
20
412 min
245 min
21 min
35
510 min
294 min
17 min
45
588 min
323 min
14 min
Outside Diameter & Tolerance
Outside Diameter, mm
Tolerance
32≤OD≤50
±0.5mm
51≤OD≤219
±1%
Wall thickness & Tolerance
Wall Thickness, mm
Tolerance, %
3≤OD≤15
+12.5/-15
16≤OD≤30
±12.5
32≤OD≤45
+10/-12.5
Length: 4000mm; 6000mm; 6500mm; 10000mm; 12010mm; and so on.
Max length: 18000mm
Keyword: TU 14-3-675-78, Steel Pipe, Seamless Steel Pipe
 
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