1. It is an alloy made up of 90% aluminum, 4% copper, 1% magnesium and 0.5% to 1% manganese. 2. Duralumin is a hard, but a lightweight alloy of aluminum. 3. It has typical yield strength of 450 Mpa. Uses of Duraluminium: 1. It is used for making wire, bar and rods. 2. It is used in heavy-duty forgings, wheels, plates, aircraft fittings. 3.