| Technical Index | Material&Processes | ||
| Hardness After Hardending&Tempering | HB240~280 | Quality 38CrMoALA Qulity Duplex Stainless Steels GH3#Steel Quality Powder Metallurgy Raw Materials Cold/Thermal Spray Hard Metal Process Advanced nitriding Process Corrosion & Abrasion Resistance Bimetal Spraying Process Horniness screw （HTP1:abrasion HTP2:corrosion resistance，HTP3:abrasion and corrosion resistance） | |
| Nitrided Hardness | HV950~1000 | ||
| Nitrided Case Depth | 0.55~0.7mm | ||
| Nitrided Brittleness | Less Than Grade 1 | ||
| Surface Roughness | Ra 0.4 | ||
| Screw Straightness | 0.015mm | ||
| Surface Chromium-Plating’s Hardness After Nitriding≥900HB | |||
| Chromium –plating Depth | 0.05~0.10mm | ||
| Alloy Hardness | HRC55~62 | ||
| Alloy Depth | 1.5~2.0mm | ||