Aluminum alloy piston is widely used. The high thermal conductivity makes aluminum pistons better cooling performance than other pistons. The inertial force also decreases due to the low density. Aluminum alloy is used as piston material, and silicon, iron, copper, manganese, nickel, zinc, titanium, chromium, lead and other elements are added as alloy elements. These improve the impact, heat, corrosion and wear resistance of the aluminum alloy.
