Categories: ALLOY STEEL PIPE/TUBE
| Elements | Data |
| Carbon | 0.08-0.15 |
| Silicon | 0.17-0.37 |
| Manganese | 0.40-0.70 |
| Phosphorus(max) | ≤0.030 |
| Sulfur(max) | ≤0.030 |
| Chromium | 0.90-1.20 |
| Molybdenum | 0.25-0.35 |
| Cuprum(max) | ≤0.20 |
| Nickel(max) | ≤0.30 |
| Vanadium(max) | 0.15-0.30 |
| Yield Strength (Mpa) | 470-640 |
| Tensile Strength (Mpa) | 255 |
| Elongation (%) | 21 |
| W.T.(S) | Tolerance of W.T. | |
| <3.5 | +15%(+0.48mm min) | |
| -10%(+0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| >20 | D<219 | ±10% |
| D≥219 | +12.5%,-10% | |
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