Galvanized Sheet Metal Vs Aluminum

This is known as a galvanized metal.

Galvanized sheet metal vs aluminum.

Specification astm a 653 a 653m coating designation a a60 a40 galvanized steel zinc coated by the hot dip process resulting in a full spangled finish galvanized steel is less conducive to forming welding and painting. The aluminum is added to improve the adhesion between the coating and the steel substrate during formation. Galvalume is aluminum and zinc coated steel. But nevertheless steel sheet has advantages.

At wenzel we take pride in making high quality parts and use only g90 galvanized sheet meaning there is 90 ounces of zinc coating per square foot or steel sheet. Iron or steel can be coated with zinc. Galvanized steel is essentially pure zinc with a very small percentage of aluminum. The combination of aluminum and zinc is used once again as a protective layer to the steel.

G90 is the best thickness for spinning and the industry standard for coating astm a653. Galvanized steel has better corrosion resistance. If we compare galvanized and aluminium steel for facade construction steel with zinc plating and aluminum alloy sheets are the closest competitors. Galvanized steel has a porous and rough surface which is difficult to clean.

This is achieved through a multi step process where a steel sheet is immersed in pure molten zinc at a very high temperature bonding the zinc to the steel. Aluminum is a metal whereas galvanized steel is obtained by a hot dipping process in which carbon steel is dipped into zinc.