Because the density of 55% Al Zn is smaller than that of Zn, the area of Al Zn plated steel sheet is more than 3% larger than that of Zn plated steel sheet under the same weight and the same thickness of gold plating layer.
2 heat resistance
Ordinary hot-dip galvanized products are usually used at a temperature of not more than 230 degrees, which will change color at 250 degrees, while aluminized zinc sheet can be used at 315 degrees for a long time without changing color.
The ability of aluminum and zinc to reflect heat and light is twice that of galvanized steel sheet, and the reflectivity is greater than 0.70, which is better than 0.65 specified by EPA energy star.
4 mechanical properties
The mechanical properties of Al Zn plated steel sheet mainly include yield strength, tensile strength and elongation. The yield strength, tensile strength and elongation of ordinary dc51d galvanized steel sheet with 150g / m2 are 140-300mpa, 200-330 and
13-25 respectively. The yield strength, tensile strength and elongation rail of dc51d + AZ 150 g / m2 Al Zn plate are 230-400 MPa, 230-550 and 15-45 respectively