What are the strengths and weaknesses of mild steel?

Aluminium is very light. It can suffer very intense corrosion, but that leads to one of its greatest strengths: the corrosion forms a very well-formed protective oxidant layer (Al2O3) which prevents the further corrosion. In that way, the low-resistance of aluminum to its initial corrosion, results to one of the better corrosion-protected metals in industry.