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Quick Details

Brand Name: shenglong
Place of Origin: China (Mainland)
Nitride Case Depth: 0.5mm-0.8mm
Nitride Hardness: 950-1050HV
Nitride Brittleness: less than Grade One
Surface Roughness: Ra0.4um
Screw Straightness: 0.015mm
Alloy Hardness: HRC58-65
Alloy Depth: 0.8mm-3.5mm
Chromium Coating Thickness:: 0.025~0.10mm

Specifications

base materials:

 

38 CrMoAIA(JIS SACM645)
 42CrMo(AISI4140), 
 9Cr18MoV
 CW6Mo5Cr4V2
SKD61ect.
 
bimetallic alloy maerials:
Fe-based alloy,
Ni-based alloy,
Co-based alloy,
NiCo-based alloy,
Tungsten carbide
 
Heat-treatment
Nitriding treatment, 
Electroplate hard-chrome,
High-frequency quenching,
Spraying corrosion wear-resisting dual metal layers,
Vacuum quenching
 
 
if  you have any requirements in screw and barrel, feel free to contact us.