The hot dip process pioneered by ak steel provides a tight metallurgical bond between the steel and coating.
Galvannealed steel sheet properties.
Design must allow for some strength reduction near welds.
Can be painted in the as shipped condition.
Galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength.
This zinc adheres to the surface without any large changes to the metallurgical properties of either the zinc layer or the steel.
Light grey matte finish.
In order to create galvanneal steel the material is run through a liquid bath of zinc alloy.
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.
However galvannealed steel goes through an additional annealing process which induces diffusion alloying between the molten zinc coating and the steel.
Galvannealed steel has very similar properties as standard galvanized but the surface has a more porous and abrasive finish that more readily accepts paint.
May have minor scratching.
This allows for the galvannealed steel to be more ductile and flexible.
In comparison to galvanized steel the coating is harder and more brittle.
Galvanneal is similar to other galvanized steels.
Has no protective film.
Meets astm a653 09 specifications requirements.
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.
Galvannealed or galvanneal galvannealed steel is the result from the processes of galvanizing followed by annealing of sheet steel.
Galvannealed steel grade data sheet.
Meets astm a653 09 specifications requirements.
One of the primary attributes of the galvannealed coating is that the.
Galvannealed steel grade data sheet galvannealed steel hot dip zinc iron coated structural steel annealed with guaranteed minimum yield strength.
Hot rolled galvannealed steel is derived from the temperature of the alloy when it is rolled into a sheet.
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.
Both are passed through a hot dip coating process.
Best use is for painted applications.
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.
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.
At times the galvannealed coating may appear similar to uncoated cold rolled steel.
