Alloy-steel of high-quality

1.38 CrMoAIA(JIS SACM645)

2.42CrMo(AISI4140)

3.9Cr18MoV

4.CW6Mo5Cr4V2

5.SKD61

 

bimetallic alloy maerials:

1.Fe-based alloy

2,Ni-based alloy

3,Co-based alloy

4.NiCo-based alloy

5.Tungsten carbide

 

Heat-treatment

Nitriding treatment

Electroplate hard-chrome

High-frequency quenching

Spraying corrosion wear-resisting dual metal layers

Vacuum quenching

SCREW

1) Nitride Depth: 0.55-0.7mm

2) Nitride Hardness: 850-960HV

3) Surface Roughness: Ra≤0.8um

4) Screw Straightness: 0.015mm

5) Bimetallic Hardness: HRC50-62

6) Bimetallic Depth: 1.5-2.0mm

BARREL

1) Nitride Depth: 0.55-0.7mm

2) Nitride Hardness: 960-1020HV

3) Surface Roughness: Ra≤1.6um

4) Bimetallic Hardness: HRC50-65

5) Bimetallic Depth: 1.5-2.0mm