Question

Duralumin is used rather than pure aluminium in construction work. Why?

Answer 1

1. Aluminium is weak and light, but duralumin is strong and light. Moist air has no effect on it either. Compared to pure aluminium, duralumin is up to six times stronger.
2. It is corrosion-resistant and has high tensile strength.

Hence, duralumin is used rather than pure aluminium in construction work.