| Mn | 40% Min | 50% Min | 60% Min | 65% Min |
| Si | 10% Min | 12% Min | 14% Min | 15% Min |
| C | 2.50% Max | 2.50% Max | 2.50% Max | 2% Max |
| P | 0.35% Max | 0.35% Max | 0.30% Max | 0.25% Max |
| S | 0.04% Max | 0.04% Max | 0.03% Max | 0.03% Max |
| Size | 10-50 mm | 10-50 mm | 10-50 mm | 10-50 mm |
| (90% Min) | (90% min) | (90% min) | (90% min) |