CuAl3Si Aluminum Silicon Bronze is an alloy of copper, aluminum, silicon and other elements. It is often used in applications where high strength and corrosion resistance are required. This alloy is highly resistant to corrosion in a variety of environments, including sea water, and is often used for propellers, bushings, and marine applications. It also has excellent wear and abrasion resistance, making it a great choice for machine parts and other components subjected to harsh conditions.