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.

Galvanized sheet metal vs aluminum.

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. Aluminum is a metal whereas galvanized steel is obtained by a hot dipping process in which carbon steel is dipped into zinc. The combination of aluminum and zinc is used once again as a protective layer to the steel. Galvanized steel is essentially pure zinc with a very small percentage of aluminum.

G90 is the best thickness for spinning and the industry standard for coating astm a653. If we compare galvanized and aluminium steel for facade construction steel with zinc plating and aluminum alloy sheets are the closest competitors. This is known as a galvanized metal. At the same thickness steel is 2 5 3 0 times stronger.

The zinc acts as a protective layer to iron or steel to prevent rust. Galvanized steel has better corrosion resistance. Galvanized steel has a porous and rough surface which is difficult to clean. The aluminum is added to improve the adhesion between the coating and the steel substrate during formation.

But nevertheless steel sheet has advantages. 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.