 |
Standard: ASTM A213/ASME SA-213 Steel grade: T2, T11, T12, T22, T91, T92 Size: OD (10-127mm) x WT (1.2-12.7mm) Application: For manufacturing Boiler, Superheater, and Heat-Exchanger. |
Size tolerance:
|
Outside Diameter |
OD Tolerance |
WT Tolerance |
Ovality Tolerance |
Cut Length Tolerance |
|
OD≦12, |
± 0, |
± 15 % |
- |
+ 3, |
|
12, |
± 0, |
± 10 % |
max, 1, |
+ 3, |
|
38, |
± 0, |
± 10 % |
max, 2, |
+ 4, |
Chemical Composition and Mechanical Properties:
|
Grade |
Chemical Composition% |
||||||||
|
C |
Si |
Mn |
P,S Max |
Cr |
Mo |
Ni Max |
V |
Al Max |
|
|
T2 |
0.10~0.20 |
0.10~0.30 |
0.30~0.61 |
0.025 |
0.50~0.81 |
0.44~0.65 |
- |
- |
- |
|
T11 |
0.05~0.15 |
0.50~1.00 |
0.30~0.60 |
0.025 |
1.00~1.50 |
0.44~0.65 |
- |
- |
- |
|
T12 |
0.05~0.15 |
Max 0.5 |
0.30~0.61 |
0.025 |
0.80~1.25 |
0.44~0.65 |
- |
- |
- |
|
T22 |
0.05~0.15 |
Max 0.5 |
0.30~0.60 |
0.025 |
1.90~2.60 |
0.87~1.13 |
- |
- |
- |
|
T91 |
0.07~0.14 |
0.20~0.50 |
0.30~0.60 |
0.02 |
8.0~9.5 |
0.85~1.05 |
0.4 |
0.18~0.25 |
0.015 |
|
T92 |
0.07~0.13 |
Max 0.5 |
0.30~0.60 |
0.02 |
8.5~9.5 |
0.30~0.60 |
0.4 |
0.15~0.25 |
0.015 |
|
Grade |
Chemical Composition% |
Mechanical Properties |
|||||||
|
W |
B |
Nb |
N |
T. S |
Y.P |
Elongation |
Hardness |
||
|
T2 |
- |
- |
- |
- |
≥415MPa |
≥205MPa |
≥30% |
163HBW（85HRB） |
|
|
T11 |
- |
- |
- |
- |
≥415MPa |
≥205MPa |
≥30% |
163HBW（85HRB） |
|
|
T12 |
- |
- |
- |
- |
≥415MPa |
≥220MPa |
≥30% |
163HBW（85HRB） |
|
|
T22 |
- |
- |
- |
- |
≥415MPa |
≥205MPa |
≥30% |
163HBW（85HRB） |
|
|
T91 |
- |
- |
0.06~0.10 |
0.03~0.07 |
≥585MPa |
≥415MPa |
≥20% |
250HBW（25HRB） |
|
|
T92 |
1.50~2.00 |
0.001~0.006 |
0.04~0.09 |
0.03~0.07 |
≥620MPa |
≥440MPa |
≥20% |
250HBW（25HRB） |
|