Hardness After Hardending&Tempering : HB240~280
Nitrided Hardness : HV900~950
Nitrided Case Depth : 0.55~0.7mm
Nitrided Brittleness :Less Than Grade 1
Surface Roughness :Ra 0.4
Surface Chromium-Plating's Hardness After Nitriding≥900HB
Screw Straightness 0.015mm
Chromium –plating Depth :0.05~0.10mm
Alloy hardness HRC 56-65
Alloy Depth 0.8~ 0.2mm