ASME/ASTM Standard
High Temperature Alloy Steel Seamless Ferrite Nominal Pipe
Standard
ASME SA335/SA335M
Main Steel Tube Grades
A335P1, A335P2, A335P5, A335P5b, A335P5c, A335P9, A335P11, A335P12, A335P22, A335P91 etc.
Other grades can also be provided after consulting with customers.
Chemical Composition
| Grade |
Chemical Composition % |
| C |
Mn |
P≤ |
S≤ |
Si |
Cr |
Mo |
Others |
| P1 |
0.10-0.20 |
0.30-0.80 |
0.025 |
0.025 |
0.10-0.50 |
/ |
0.44-0.65 |
/ |
| P2 |
0.10-0.20 |
0.30-0.61 |
0.025 |
0.025 |
0.10-0.30 |
0.50-0.81 |
0.44-0.65 |
/ |
| P5 |
≤0.15 |
0.30-0.60 |
0.025 |
0.025 |
≤0.50 |
4.00-6.00 |
0.45-0.65 |
/ |
| P5b |
≤0.15 |
0.30-0.60 |
0.025 |
0.025 |
1.00-2.00 |
4.00-6.00 |
0.45-0.65 |
/ |
| P5c |
≤0.12 |
0.30-0.60 |
0.025 |
0.025 |
≤0.50 |
4.00-6.00 |
0.45-0.65 |
/ |
| P9 |
≤0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.50-1.00 |
8.00-10.00 |
0.90-1.10 |
/ |
| P11 |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.50-1.00 |
1.00-1.50 |
0.44-0.65 |
/ |
| P12 |
0.05-0.15 |
0.30-0.61 |
0.025 |
0.025 |
≤0.50 |
0.80-1.25 |
0.44-0.65 |
/ |
| P21 |
0.05-0.15 |
0.30-0.60 |
0.25 |
0.025 |
≤0.50 |
2.65-3.35 |
0.80-1.06 |
/ |
| P22 |
0.05-0.15 |
0.30-0.60 |
0.25 |
0.025 |
≤0.50 |
1.90-2.60 |
0.87-1.13 |
/ |
| 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 0.030-0.070; Ni ≤0.40; Al ≤0.04; Nb 0.06-0.10
Mechanical Properties
| Grade |
Mechanical Properties |
| Tensile Strength MPa |
Yield Strength MPa |
Elongation % |
| P1 |
380 |
205 |
30 |
| P2 |
380 |
205 |
30 |
| P5 |
415 |
205 |
30 |
| P5b |
415 |
205 |
30 |
| P5c |
415 |
205 |
30 |
| P9 |
415 |
205 |
30 |
| P11 |
415 |
205 |
30 |
| P12 |
415 |
220 |
30 |
| P21 |
415 |
205 |
30 |
| P22 |
415 |
205 |
30 |
| P91 |
585 |
415 |
20 |
