Duralumin is an alloy of aluminium and copper. Percentage of copper in duralumin is July 30, 2022 – by admin Question: Duralumin is an alloy of aluminium and copper. Percentage of copper in duralumin is [A]. 38 [B]. 26 [C]. 16 [D]. 4 Answer: Option D Explanation: No answer description available for this question.