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Materials Database - Engineering Alloys - Copper Alloys
Copper alloys have outstanding electrical and thermal conductivity as well as excellent corrosion resistance. Brasses are defined as copper alloyed with zinc, and bronzes are defined as copper alloyed with other elements such as tin, aluminum, silicon, and nickel. The Unified Numbering System is primarily used to organize these alloys.
Low Alloy Coppers [C10000]
A very small amount of alloying elements can be added to significantly increase the strength of copper.
Zinc Alloys (Brasses) [C20000, C30000, C40000, C66400-C69800]
Zinc is added to increase strength while maintaining corrosion resistance.
Tin Alloys (Phosphor bronzes) [C50000]
Tin is added to increase strength, but thermal and electrical conductivity is reduced.
Aluminum Alloys (Aluminum bronzes) [C60600-C64200]
Aluminum is added to increase strength and give favorable wear characteristics and corrosion resistance.
Silicon Alloys (Silicon bronzes) [C64700-C66100]
Silicon is added to increase strength and weldability.
Nickel Alloys (Copper nickels, nickel silvers) [C70000]
Nickel is added to increase strength while maintaining ductility, corrosion resistance, and toughness.
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