This article describes the microstructure of copper alloys, including copper-zinc (brasses), bronzes, copper-nickel, and copper-nickel-zinc, and examines the effect of oxygen content on alloy phases observed in different product forms. The article also discusses inclusions, etchants, and the effect of composition and processing on grain structure and growth rates.

Copper and copper alloys constitute one of the major groups of commercial metals due to their excellent electrical and thermal conductivities, corrosion and fatigue resistance, ease of fabrication, and good strength. This article lists the types, properties, fabrication characteristics, corrosion ratings, temper designations, and applications of wrought copper and copper alloys. It also presents an outline of the most commonly used mechanical working and heat treating processes. The copper industry in the United States is broadly composed of two segments: producers (mining, smelting, and refining companies) and fabricators (wire mills, brass mills, foundries, and powder plants). The article discusses copper production methods and describes major changes in the structure of the U.S. copper and copper alloys industry.

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