Welded steel pipe grade T22 is alloy stseel pipe. It is especially suited for steam boiler, boiler parts, boiler drum, pressure vessel for the apparat us engineering and similar purposes.Itcan be used in permanent operation with wall temperatures up to about 590°C 1094°F+.
Welded Steel Pipe Grade T22 Chemical composition ( Heat analysis in % )
Name
|
C
|
Si
|
Mn
|
P
|
S
|
Al
|
Cu
|
Cr
|
Mo
|
T22
|
0.05-0.15
|
≤0.50
|
0.30-0.60
|
≤0.025
|
≤0.025
|
–
|
–
|
1.9-2.6
|
0.87-1.13
|
Mechanical properties at room temperature
Name
|
Usual Delivery condition
|
Yield/proof strength
ReH/Rp0,2 N/mm² min |
Tensile strength
Rm N/mm
|
Elongation
% min
| |
T22
|
normalized and tempered
|
205
|
415
|
30
|
20
|
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