??45/2 - ??200/2

Compresing rate of screw can be designed according to different raw materials and products.

Technical Specification:
Hardness After Hardening & Tempering: HB240-280
Nitrided Hardness: HV850-1000
Nitrided Case Depth: 0.45-0.7mm
Nitrided Brittleness: Less than Grade 2
Surface Roughness: Ra 0.4
Screw Straighness: 0.015mm
Surface Chromium-Plating's Hardness After Nitriding: ??900HB
Chromium-plating Depth. 05-0.10mm
Alloy Hardness: HRC56-65
Alloy Depth: 0.8-2.0mm

Materials & Processes:
Quality 38CrMoAIA
Quality Duplex Stainless Steels
GH113
Quality Nickel-based Alloy powder
Cold/Thermal Spray Hard metal Process
Advanced nitriding Process
Corrosion & Abrasion Resistance Bimental Spraying Process.