Chinese High strength abrasion resistant steel plate for construstion machine
NM300 Chemical composition
| Grade | Chemical composition(Quality fraction)/% | ||||||||||
| C | Si | Mn | P | S | Cr | Ni | Mo | Ti | B | Als | |
| ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | ≤ | scope | ≥ | |
| NM300 | 0.23 | 0.70 | 1.60 | 0.025 | 0.015 | 0.7 | 0.50 | 0.4 | 0.05 | 0.0005~0.006 | 0.01 |
NM300 Mechanical properties and process performance
| Grade | Thickness mm | Tensile strength Rm/MPa | Elongation A/% | Impact power at -20℃ KV2/J | Surface Brinell hardness HBW |
| NM300 | ≤80 | ≥1000 | ≥14 | ≥24 | 270~330 |
| 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. | |||||
NM300 Delivery condition: quenched; quenched tempered; TMCP tempered; tempered or hot rolled;