Galvanization is the process where Iron(Fe) and Steel are protected from rusting or corrosion with the help of Zinc(Zn).
In this process the iron or the steel is covered with a Zinc coating.
This zinc-coated surface avoids the corrosion and weathering effects on the iron or steel by preventing the interaction of the surface with the atmosphere.
Therefore, galvanized iron sheets are coated with Zinc(Zn).