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Copper is a chemical element with symbol Cu and atomic number 29. It is a soft, malleable and ductile metal with very high thermal and electrical conductivity.
C 3036 (OTTO) Copper shot, 13mm (0.5in) dia, 99.99% Cas 7440-50-8 - used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze.