Principal amongst aluminium's properties is its low density, and thus its lack of weight. Aluminium is one third the weight of steel yet when it is alloyed its strength to weight ratio is superior to that of steel.

Other key properties are corrosion resistance and formability. Aluminium has a natural oxide film that provides resistance to corrosion and which reforms itself if damaged.

It is naturally durable and maintains its strength even when very cold.
Environmental considerations highlight other unique benefits of aluminium. It is non-toxic, safe to handle, causes no adverse run-off to groundwater and is endlessly recyclable.

In addition aluminium does not burn, is non-magnetic and has good electrical conductivity.