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n. An alloy of aluminum that contains copper, manganese, magnesium, iron, and silicon and is resistant to corrosion by acids and sea water.

n. an alloy of over 90% aluminium, 4% copper and traces of manganese, magnesium, iron and silicon, widely used in the aircraft industry

n. an aluminum-based alloy

"different colors and finishes and is made of "duralumin," which certainly sounds rugged."

metal    alloy   

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