duralumin

[ doo-ral-yuh-min, dyoo- ]
/ dʊˈræl yə mɪn, dyʊ- /

noun

an alloy of aluminum that is 4 percent copper and contains small amounts of magnesium, manganese, iron, and silicon: used for applications requiring lightness and strength, as in airplane construction.

Origin of duralumin

1905–10; < Latin dūr(us) hard + alumin(um)

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British Dictionary definitions for duralumin

Duralumin
/ (djʊˈræljʊmɪn) /

noun

trademark 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