| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | CE | TS/YS Ratio | |
| Min | Max | ||||
| 300R | 405 | 300 | >1.15 | ||
| 400R | 540 | 400 | >1.15 | ||
| 500R | 675 | 500 | >1.15 | ||
| 400W | 540 | 400 | 525 | 0.55 max | >1.15 |
| 500W | 625 | 500 | 625 | 0.55 max | >1.15 |
Source
RSIC / IAAC Standards Practice Manual (New edition)
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