Nitrided layer depth:0.50-0.80mm Nitrided hardness: 950-1100HV Nitrided brittleness: Less than 2 level Surface roughness: Ra 0.4 μm Linearity of screw: 0.015mm/m Hard-chrome plating hardness after nitriding: ≥950HV Chrome-plating layer depth: 0.025~0.10mm Bimetallic layer depth: 3-5 mm Bimetallic hardness: HRC60-70 |