Both galvanized sheet and galvalume(aluzinc) sheet have good heat resistance, heat reflection, corrosion resistance, easy to paint and other properties, but all properties of galvalume(aluzinc) sheet are better than galvanized sheet. Its service life is more than four times that of ordinary galvanized steel. It is a replacement product of galvanized sheet.
The following are the characteristics of galvalume(aluzinc) sheet:
Heat reflectivity: The heat reflectivity of galvalume(aluzinc) sheet is very high, twice that of galvanized steel sheet, and people often use it as a thermal insulation material.
Heat resistance: Al-Zn alloy steel plate has good heat resistance and can withstand high temperature of more than 300 degrees Celsius, which is very similar to the high temperature oxidation resistance of galvalume (aluzinc) steel plate. It is often used in chimney pipes, ovens, luminaires and fluorescent lamp shades.
Corrosion resistance: The corrosion resistance of galvanized steel coil is mainly due to the protective function of aluminum and aluminum. When the zinc is worn away, the aluminum forms a dense layer of aluminum oxide, preventing corrosion-resistant substances from further corroding the interior.
Easy to paint: It has excellent adhesion between galvalume(aluzinc) sheet and paint, and can be painted without pretreatment and weathering.
Economical: Because the density of 55%AL-Zn is lower than that of Zn, the area of the galvalume (aluzinc) steel sheet is more than 3% larger than that of the galvanized steel sheet under the same weight and the same thickness of the galvanizedlayer.