United States · ASME
SB-338 Grade 38
ASME SB-338
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 3.5 | 4.5 | ||
| C | 0.08 | Product analysis tolerance + 0.02% | Product analysis tolerance + 0.02% | |
| Fe | 1.2 | 1.8 | Product analysis tolerance +/- 0.2% | Product analysis tolerance +/- 0.2% |
| H | 0.015 | Product analysis tolerance + 0.002% | Product analysis tolerance + 0.002% | |
| N | 0.03 | Product analysis tolerance + 0.02% | Product analysis tolerance + 0.02% | |
| O | 0.2 | 0.3 | Product analysis tolerance + 0.03% | Product analysis tolerance + 0.03% |
| Ti | Bal | Bal | ||
| Total Each | 0.1 | |||
| Total Others | 0.4 | |||
| V | 2 | 3 | Product analysis tolerance +/- 0.15% | Product analysis tolerance +/- 0.15% |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| seamless steel tube, welded steel tube, annealed | ≤794 | ≤895 | ≤10 |