In combination with current applications, ductile iron materials have been widely used in various major industrial sectors. These departments require high strength, plasticity, toughness, wear resistance, severe thermal and mechanical shock resistance, high temperature or low temperature resistance, corrosion resistance and dimensional stability for ductile iron castings.
To meet the requirements of these different fields of use, ductile irons currently on the market include many grades that provide a wide range of mechanical and physical properties. For the user, strength and elongation are not the basis for the designer's choice of materials, while other decisive important properties include yield strength, modulus of elasticity, wear and fatigue strength, hardness and impact properties.
In addition, the corrosion resistance and oxidation resistance of ductile iron materials are also considered in design. Among them, the pearlite type ductile iron has the characteristics of medium and high strength, medium toughness and plasticity, high comprehensive performance, good wear resistance and vibration damping, and good casting process performance. It can be changed by various heat treatments, and is currently used for various power mechanical crankshafts, camshafts, connecting shafts, connecting rods, gears, clutch plates, hydraulic cylinders and other components.