Why is aluminum used in the truck safe?

It is three, four times more durable than the steel body due to stoding feature/It is four times more durable/significantly mitigate the weight of the trailer, thus gaining acceleration to the vehicle, increasing the safety by absorbing kinetic energy in case of implementation of fuel savings.
What are the usage areas of the truck safe?
Body Panel and Case Production in Trucks and Trailer Alloy1000/3000/5000 Series