Galvannealed Steel Sheet Properties

Meets astm a653 09 specifications requirements.

Galvannealed steel sheet properties.

Galvannealed or galvanneal galvannealed steel is the result from the processes of galvanizing followed by annealing of sheet steel. It is perhaps most similar to hot dip galvanizing. Meets astm a653 09 specifications requirements. This allows for the galvannealed steel to be more ductile and flexible.

Galvannealed steel is a specialized variation of galvanized steel where induction heating is used to alloy the zinc coating with the steel to create a zinc iron coating. Has no protective film. They both are zinc coated at the mill and are designed for rust and corrosion resistance. In comparison to galvanized steel the coating is harder and more brittle.

This zinc adheres to the surface without any large changes to the metallurgical properties of either the zinc layer or the steel. Galvannealed steel grade data sheet. Light grey matte finish. The hot dip process pioneered by ak steel provides a tight metallurgical bond between the steel and coating.

This is preferred over galvanized if the metal is to be painted. Steel base guaranteed typical range guaranteed maximum percent longitudinal tensile carbon c 0 25 yield strength minimum ksi 80 80 117 phosphorus p 0 04 tensile strength minimum ksi 82 82 120. Galvannealed steel grade data sheet galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength. May have minor scratching.

Galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength. Best use is for painted applications. One of the primary attributes of the galvannealed coating is that the. Both are passed through a hot dip coating process.

Can be painted in the as shipped condition. The iron diffuses from the steel into the coating the galvannealed surface has a non spangled matte finish a finish very different than the highly metallic appearance of the galvanized coating. Galvanneal is similar to other galvanized steels. Hot rolled steel is steel that has been heated above its recrystalization point and is pushed between two rollers to meet a certain length and thickness.

However galvannealed steel goes through an additional annealing process which induces diffusion alloying between the molten zinc coating and the steel. Hot rolled galvannealed steel is derived from the temperature of the alloy when it is rolled into a sheet. Carbon sheet steel with a zinc coating both sides that has been heat treated to form an iron zinc alloy layer underneath the zinc and on top of steel. Class 1 mechanical properties chemical composition.

In order to create galvanneal steel the material is run through a liquid bath of zinc alloy. Galvannealed steel has very similar properties as standard galvanized but the surface has a more porous and abrasive finish that more readily accepts paint.