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| Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| NM360 | 0.25 | 0.70 | 1.60 | 0.025 | 0.015 | 0.80 | 0.50 | 0.50 |
| NM400 | 0.30 | 0.70 | 1.60 | 0.025 | 0.010 | 1.0 | 0.70 | 0.50 |
| NM450 | 0.35 | 0.70 | 1.70 | 0.025 | 0.010 | 1.1 | 0.80 | 0.55 |
| NM500 | 0.38 | 0.70 | 1.70 | 0.020 | 0.010 | 1.2 | 1.00 | 0.65 |








