Double gold level: class A: containing 40% tungsten.
Class B: 20% tungsten
Class C: 95% tungsten
Alloy hardness: HRC. 56-65 ℃
Technical indicators:
Depth of nitride: 0.5-0.8mm.
Hardness of nitride: 950-1020Hv.
Brittleness of nitrogen: less than or equal to one.
Surface roughness: Ra0.4um.
Screw straightness: 0.015mm.
Double alloy hardness: hrc55-62.
Double alloy depth:> 2mm
