Galvanealed Sheet Metal

Galvannealed is cold rolled carbon steel coated with zinc iron alloy on both sides.

Galvanealed sheet metal.

Advantages and disadvantages of galvanneal. Metal supermarkets is the world s largest small quantity metal supplier with over 85 brick and mortar stores across the us canada and united kingdom. 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. The resulting finish is a dull matte surface.

Galvannealed sheet can be formed much in the same way and by the same variety of processes as galvanized sheet. For both galvanized and galvannealed sheet metal we use commercial grade cs b stock. For example a40 tells you that the metal contains 0 40 ounces of coating per square foot. As a result some amount of powdering can appear when the metal is formed.

Galvannealed steel is very conducive to forming welding and allows for excellent paint adhesion. It can be painted sooner but not without a pretreatment. As the metal strip exits the coating bath the zinc is subjected to an in line heat treatment that converts the entire coating to a zinc iron alloy giving the sheet improved surface finish so it can be painted. Our galvanized sheet metal is g60 and we use a40 galvanneal.

Galvannealed sheet is carbon steel coated with zinc on both sides applied to the metal through a continuous hot dip process. With its shiny zinc appearance galvanized is the most common cost effective corrosion resistant metal for hvac. The number in that code refers to the thickness of the zinc coating on the product. In comparison to galvanized steel the coating is harder and more brittle.

March 14 2016 at 11 09 pm thanks whitney. Galvannealed steel is a matte uniform grey color which can be easily painted. We are metal experts and have been providing quality customer service and products. Galvannealed steel zinc iron alloy coated by the hot dip process followed by heating the steel to induce diffusion alloying between the molten zinc coating and the steel.

However the zinc alloy coating on galvannealed sheet is more brittle than the zinc coating of galvanized sheet. Galvannealed steel has a matte grey color uniform which can be easily painted. Galvanealed is actually worked into the metal and more effective. The galvannealed steel is then cut into specified dimensions.

In comparison to galvanized steel the coating is harder and more brittle. The zinc iron coating weight is denoted with an a40 or a60 which means 40 or 60 oz sq ft. Serving the sheet metal industry in the southeast since 1874 material specification sheet galvanneal steel description galvanneal is a carbon steel coated with zinc on both sides by a continuous hot dip process. Galvannealed or galvanneal galvannealed steel is the result from the processes of galvanizing followed by annealing of sheet steel.