Depth of nitrated Layer: 0.5-0.8mm
Hardness of nitration: 900-1020Hv
Fragility of nitration: Less than grade 1
Surface roughness: Ra 0.4um
Straightness of screw: 0.015mm
Surface Hardness of Nitrated Cr coating Layer: >950Hv
Hardness of Bimetallic Layer: HRC55° -72°
The Thickness of Cr-coating Layer: 0.03-0.08mm