Galvannealed Steel Sheet Properties

Hot rolled galvannealed steel is derived from the temperature of the alloy when it is rolled into a sheet.

Galvannealed steel sheet properties.

Galvannealed steel has very similar properties as standard galvanized but the surface has a more porous and abrasive finish that more readily accepts paint. One of the primary attributes of the galvannealed coating is that the. This allows for the galvannealed steel to be more ductile and flexible. May have minor scratching.

This is preferred over galvanized if the metal is to be painted. At times the galvannealed coating may appear similar to uncoated cold rolled steel. 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. Can be painted in the as shipped condition.

Has no protective film. Design must allow for some strength reduction near welds. Light grey matte finish. Best use is for painted applications.

Meets astm a653 09 specifications requirements. 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. It is perhaps most similar to hot dip galvanizing.

They both are zinc coated at the mill and are designed for rust and corrosion resistance. Class 1 mechanical properties chemical composition. 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. Galvannealed steel grade data sheet galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength.

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. Galvanneal is similar to other galvanized steels. Galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength.

In order to create galvanneal steel the material is run through a liquid bath of zinc alloy. However galvannealed steel goes through an additional annealing process which induces diffusion alloying between the molten zinc coating and the steel. This zinc adheres to the surface without any large changes to the metallurgical properties of either the zinc layer or the steel. Galvannealed steel is a matte uniform grey color which can be easily painted.

Galvannealed or galvanneal galvannealed steel is the result from the processes of galvanizing followed by annealing of sheet steel. In comparison to galvanized steel the coating is harder and more brittle.