A dry freight truck, or dry van trailer, is usually a small truck with a container mounted behind its cab chassis to transport goods. To keep the stability and durability of the transportation, the containers (truck bodies) are required to be solid and tough, while they cannot be too heavy. This is really a challenge to the materials of the van box (body panels).
Traditionally, aluminum seems to be the best choice among metals. For example, it can withstand 5 times the impact of steel without failing. It’s also quite lighter than other metals.
Actually the material of dry freight body panels can be further improved by composites if less weight and more strength are demanded.
The composite honeycomb sandwich panel is one of the ideal choices for truck body panels.