Why is aluminium widely used in aircraft construction?

Question

Accepted Answer

1. **Light weight:** Aluminium has low density, about $ho_{Al}\approx 2700\ 	ext{kg/m}^3$, much less than steel. Lighter parts save fuel.

2. **Corrosion resistance:** Aluminium forms a thin oxide layer that protects it from rust and weather.

3. **Good strength-to-weight:** It gives enough strength while staying light and is easy to shape and join.

4. **Result:** The mix of light weight and corrosion resistance makes aluminium ideal for planes.

FINAL_ANSWER: b

Answer

Answer

Answer