Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
Application: for manufacturing wall panel, economizer, superheater and steam pipeline of boiler.
Grade: T11 T12 T22
Grade and Chemical Composition
|
Grade |
C |
Mn |
P≤ |
S≤ |
Si |
Cr |
Mo |
|
T11 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50~1.00 |
0.50~1.00 |
1.00~1.50 |
|
T12 |
0.05~0.15 |
0.30~0.61 |
0.025 |
0.025 |
≤0.50 |
0.80~1.25 |
0.44~0.65 |
|
T22 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
≤0.50 |
1.90~2.60 |
0.87~1.13 |
|
Grade |
Tensile Point |
Yield Point |
|
T11 |
≥205 |
≥415 |
|
T12 |
≥220 |
≥415 |
|
T22 |
≥205 |
≥415 |