Aluminum is a metal, whereas galvanized steel is obtained by a hot dipping process in which carbon steel is dipped into zinc.

Galvanized steel has a porous and rough surface which is difficult to clean.

Aluminum surfaces are hard and smooth, which helps eliminate bacteria growth with an easy cleaning method.

Aluminum is preferred for its lightweight, anti corrosive and thermal conductivity properties, whereas galvanized steel is heavier and more expensive.