a light strong aluminium alloy containing 3.5–4.5 per cent of copper with small quantities of silicon, magnesium, and manganese; used in aircraft manufacture
Also called: duraluminium
duralumin in American English
(duˈræljumɪn; djuˈræljumɪn)
noun
a strong, lightweight alloy of aluminum with copper, manganese, magnesium, and silicon