Galvannealed Steel Sheet Properties

Galvanneal is similar to other galvanized steels.

Galvannealed steel sheet properties.

Galvannealed steel is a matte uniform grey color which can be easily painted. It is perhaps most similar to hot dip galvanizing. Has no protective film. In order to create galvanneal steel the material is run through a liquid bath of zinc alloy.

Class 1 mechanical properties chemical composition. Both are passed through a hot dip coating process. Hot rolled galvannealed steel is derived from the temperature of the alloy when it is rolled into a sheet. Galvannealed steel has very similar properties as standard galvanized but the surface has a more porous and abrasive finish that more readily accepts paint.

Galvannealed steel grade data sheet galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength. Can be painted in the as shipped condition. In comparison to galvanized steel the coating is harder and more brittle. Galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength.

The hot dip process pioneered by ak steel provides a tight metallurgical bond between the steel and coating. This allows for the galvannealed steel to be more ductile and flexible. 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. 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.

Meets astm a653 09 specifications requirements. May have minor scratching. Galvannealed steel grade data sheet. Design must allow for some strength reduction near welds.

This is preferred over galvanized if the metal is to be painted. 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. Galvannealed or galvanneal galvannealed steel is the result from the processes of galvanizing followed by annealing of sheet steel. Best use is for painted applications.

Light grey matte finish. 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. 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. Meets astm a653 09 specifications requirements.

At times the galvannealed coating may appear similar to uncoated cold rolled steel. However galvannealed steel goes through an additional annealing process which induces diffusion alloying between the molten zinc coating and the steel.