|
 |
Specification for ASTM A335 |
 |
 |
Standard Specification for
Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
 Chemical Composition (%) |
Grade |
C |
Mn |
P, S, max |
Si |
Cr |
Mo |
P11 |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.50-1.00 |
1.00-1.50 |
0.44-0.65 |
P22 |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.50 max |
1.90-2.60 |
0.87-1.13 |
P5 |
0.15 max |
0.30-0.60 |
0.025 |
0.50 max |
4.00-6.00 |
0.45-0.65 |
P9 |
0.15 max |
0.30-0.60 |
0.025 |
0.25-1.00 |
8.00-10.00 |
0.90-1.10 |
P91 |
0.08-0.12 |
0.30-0.60 |
0.020/0.010 |
0.20-0.50 |
8.00-9.50 |
0.85-1.05 |
| |
V 0.18-0.25 |
N 0.03-0.07 |
Ni 0.40 max |
Al 0.02 max |
Nb 0.06-0.10 |
Ti 0.01 max |
| P92 |
0.07-0.13 |
0.30-0.60 |
0.020/0.010 |
0.50 max |
8.50-9.50 |
0.30-0.60 |
| |
V 0.15-0.25 |
N 0.03-0.07 |
Ni 0.40 max |
Al 0.02 max |
Nb 0.04-0.09 |
W 1.50-2.00 |
| |
|
|
|
B 0.001-0.006 |
Ti 0.01 max |
Zr 0.01 max |
| |
| Mechanical Properties |
| |
Grade P11, P22, P5, P9 |
Grade P91 |
Grade P92 |
| Tensile strength, min, (MPa) |
415 |
585 |
620 |
| Yield strength, min, (MPa) |
205 |
415 |
440 |
| Elongation, min, (%), L/T |
30/20 |
20/… |
20/… |
| |
| Heat Treatment |
A / N+T |
N+T / Q+T |
N+T |
|
