Arsenical copper

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Arsenical copper contains up to 0.5% arsenic which, at elevated temperatures, imparts higher tensile strength and a reduced tendency to scaling. It is typically specified in boiler work, especially locomotive fireboxes.[1][2][3] It also helps prevent embrittlement of oxygen free copper by bismuth, antimony and lead by the formation of complex oxides. Copper with a larger percentage of arsenic is called arsenical bronze, which can be work-hardened much harder than copper.

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  1. ^ Rollason, EC (1949). Metallurgy for Engineers (2nd ed.). London: Arnold. 
  2. ^ [1]
  3. ^ [2]