Excellent performance of aluminum zinc magnesium coating
1. Excellent corrosion resistance:
According to data, aluminum-zinc-aluminum-magnesium coating has significantly better plane corrosion resistance than galvalume and hot-dip pure zinc. Under neutral salt spray test conditions, the time for red rust to appear on aluminum-zinc-aluminum-magnesium coatings is on average more than 50% longer than that of galvanized coatings with the same coating thickness. The corrosion resistance is 10 to 20 times that of hot-dip galvanized steel plates, and 5 to 8 times better than hot-dip galvanized-5% aluminum alloy steel plates.
Notch Corrosion Resistance High Al-Zn Al-Mg coating has significantly better notch corrosion resistance than Al-Zn coating. Under neutral salt spray test conditions, the greater the zinc ratio index, the greater the improvement in corrosion resistance of the high-aluminum-zinc-aluminum-magnesium coating over the notch of the aluminum-zinc coating.
2. Excellent stamping processability
Compared with hot-dip galvanized steel sheets, its coating has high hardness and smooth surface, so its stamping performance is excellent, thereby improving production efficiency.
The edge margin after processing of zinc-aluminum-magnesium is small, → showing the excellent stretch forming properties of zinc-aluminum-magnesium.
3. Reduce costs
The excellent corrosion resistance of zinc, aluminum and magnesium allows customers to simplify the re-metal coating process, thereby reducing initial costs. And because of its excellent corrosion resistance, it reduces life cycle costs, etc., ultimately reducing the total cost.