17-4 Chemical Composition Standards
Chemical Composition: The chemical composition of 17-4PH includes: Chromium (Cr) 15.0–17.5%, Nickel (Ni) 3.0–5.0%, Copper (Cu) 3.0–5.0%, Manganese (Mn) less than 1.0%, Silicon (Si) less than 1.0%, Phosphorus (P) less than 0.04%, Sulfur (S) less than 0.03%, Carbon (C) less than 0.07%, and Nitrogen (N) less than 0.10%.
Quick-release pins require better shear resistance.
The heat treatment process typically used for 17-4ph steel is solution treatment followed by aging treatment. After solution treatment, four types of aging processes are typically selected. Among these, aging at 480°C for 2 hours results in a hardness of over 40 HRC, achieving the highest mechanical properties. At higher aging temperatures of 620°C, greater ductility can be obtained. This property is precisely what is required for quick-locking pins, enabling them to meet the demands for better shear resistance.
