Chinese High strength abrasion resistant steel plate for construstion machine
NM450 Chemical composition
| Grade | Chemical composition(Quality fraction)/% | ||||||||||
| C | Si | Mn | P | S | Cr | Ni | Mo | Ti | B | Als | |
| ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | scope | ≥ | |
| NM450 | 0.35 | 0.70 | 1.70 | 0.025 | 0.010 | 1.0 | 0.80 | 0.55 | 0.05 | 0.0005~0.006 | 0.01 |
NM450 Mechanical properties and process performance
| Grade | Thickness mm | Tensile strength Rm/MPa | Elongation A/% | Impact power at -20℃ KV2/J | Surface Brinell hardness HBW |
| NM450 | ≤80 | ≥1250 | ≥7 | ≥24 | 420~480 |
| Tensile strength, elongation, and impact power are special performance requirements. If the user does not specify these in the contract, only Brinell strength is guaranteed. | |||||