Sample

Wear Factor

[g/m]

Friction coefficient

Surface Hardness [kg/mm2]

Plasma Nitriding

1.86 × 10−7

0.234

948 ± 12

Solid Nitriding

0.94 × 10−7

0.237

875 ± 8

No treated

2.095 × 10−6

0.354

225 ± 5