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Feature of Galvalume Steel Coil

Feature of Galvalume Steel Coil

1. Super corrosion resistance: under various environmental conditions, aluminum zinc coated steel coil has excellent corrosion resistance than hot-dip galvanized steel coil with the same thickness, and its service life is 2-6 times that of ordinary galvanized steel plate. Because the microcrack of aluminum zinc plating on the deformed part is smaller than that of hot-dip galvanizing, its corrosion resistance is much higher than that of hot-dip galvanizing. In North America, there are examples of roof panels used for 20 years.
Its service life order: Rural – industrial atmosphere – General marine atmosphere – serious marine atmosphere
2. High temperature oxidation resistance: ordinary hot-dip galvanized products usually have a service temperature of no more than 230 ℃, and will change color when reaching 250 ℃, but aluminized zinc products can be used for a long time at 315 ℃. And there will be no discoloration or deformation;
3. High refectivity: the reflection coefficient of aluminized and zinc products is twice that of hot-dip galvanized plates. Acting as roof and panel without painting can achieve energy-saving effect;
4. Easy processing: it can be punched, cut, bent, etc.;
5. Beautiful appearance: the silver white snowflake pattern is beautiful and can be used directly without painting;
6. Good coatability: during painting, the aluminized zinc steel coil only needs to be non-oiled without pretreatment or etching. Al-Zn coating is excellent in adhesion with paint. but when coating on the galvanized steel coil, a certain pretreatment must be carried out first
7. More usable area: the density (3.75g/m3) of the coating of aluminized zinc steel coil is much smaller than that of the coating of galvanized steel coil (7.15 g / m3). Therefore, when the steel substrate and coating thickness are the same, the usable area per ton of aluminized zinc steel coil is much more than that of galvanized steel coil