What main copper alloy grades are used for copper castings and their core properties?

Industrial copper castings are mainly divided into three core alloy categories according to auxiliary alloy elements,each with targeted performance advantages.Cast brass alloys take zinc as the main additive element,with good fluidity during melting,easy mould filling and low production difficulty,suitable for general valves,pipe fittings and decorative structural parts.Cast bronze alloys include tin bronze,aluminum bronze and silicon bronze;tin bronze has excellent wear resistance and self-lubricating property for bearing and bushing parts,while aluminum bronze shows outstanding anti-corrosion capacity to adapt to marine and chemical humid environments.Copper-nickel cast alloys have stable performance under alternating temperature and strong resistance to seawater erosion,mostly used for marine pipeline accessories and heat exchange components.Different copper alloys can match post heat treatment processes to adjust tensile strength,hardness and dimensional stability to meet high-standard service conditions.