NM400 is a kind of wear/corrosion resistant steel plate from China.NM400 wear resistant steel is heat treated by direct quenching and tempering and re-quenching and re-tempering processes respectively after hot rolling. Impact tests were carried out using an instrumented impact tester. The microstructure and fracture surfaces were investigated using a combination of optical microscopy, transmission electron microscopy and scanning electron microscopy.NM400 has high mechanical strength, 3 to 5 times that of ordinary low alloy steel plates, and provides a significant increase in surface hardness, typically in the range of 360 to 450 HB.
Chemical Composition of NM400:
| Brand | C | Si | Mn | P | S | Cr | Mo | Ni | B | CEV |
|---|---|---|---|---|---|---|---|---|---|---|
| NM400 | ≤0.24 | ≤0.50 | ≤1.6 | ≤0.025 | ≤0.015 | 0.4~0.8 | 0.2~0.5 | 0.2~0.5 | ≤0.005 |
Mechanical Property of NM400:
| Brand | Thickness mm | Tensile Test MPa | Hardness | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| YS Rel MPa | TS Rm MPa | Elongation % | ||||||||
| NM400 | 10-50 | ≥620 | 725-900 | ≥16 | 380-460 | |||||
