ZAM (zinc aluminum magnesium) coating is a ternary alloy coating. Its main components are zinc, 11% aluminum, 3% magnesium, and a small amount of silicon. ZAM coating has excellent resistance to red rust and self-healing corrosion on shear surfaces, and also has weldability far superior to ZAM steel plates.

The addition of alloying elements such as Al and Mg to the ZAM (zinc-aluminum-magnesium) steel plate coating greatly improves the corrosion inhibition effect of the coating, making its corrosion resistance several to ten times that of ordinary galvanized steel plates.

The ZAM coating is denser than ordinary galvanized coatings, so it is less prone to peeling during stamping. It has excellent tensile and stamping processing properties under harsh conditions, and due to its high hardness, it has excellent damage resistance.

The ZAM coating has a self-healing effect. The coating components around the cut surface continuously dissolve, forming a dense protective film mainly composed of zinc hydroxide, alkaline zinc chloride, and magnesium hydroxide. This protective film has low conductivity and inhibits corrosion on the cut surface.

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