HomeProductsHot-dip coated productsExtragal® and Galvannealed
Extragal® and Galvannealed - ArcelorMittal Tubarão

Extragal® and Galvannealed

Extragal® (GI) – this type of coating is obtained through the hot-dip galvanizing process (where the steel is bathed in melted zinc); this coating produces high surface quality, corrosion resistant and malleable steel. The result is a strip that is proper for the manufacturing of both exposed and non-exposed parts for a variety of applications. The single operation production process makes Extragal® an economic solution for parts which need to be corrosion protected.

Galvannealed/Zinc-Iron alloy (GA) – this type of coating is the result of bathing the strip in molten zinc followed by a thermal treatment that makes the diffusion of the iron from the strip with the zinc from the coating, thus creating a coating formed by a zinc-iron alloy with 10% iron, which makes this product specifically good for spot welding.

The excellent corrosion resistant quality and the high surface quality make Galvannealed products recommended for several applications especially in the automotive industry for exposed and non-exposed parts. Because of its iron content it is less malleable when compared to the Extragal® coating. Under industrial conditions, its high quality surface allows an ideal painting appearance for exposed parts.

The types of coating supplied for this product are:

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