November 9, 2022
The biggest difference between galvanized plate and aluminized zinc plate lies in the difference of coating. The surface of galvanized plate is evenly distributed with a layer of zinc material which plays an anodic protection role on the base material, that is to say, the alternative corrosion of zinc material protects the use of the base material, and only when the zinc is completely corroded can it damage the base material inside.
The surface coating of the aluminized zinc plate is composed of 55% aluminum, 43.5% zinc and a small amount of other elements. The surface of the aluminized zinc coating has a honeycomb structure at the microscopic level, and the "honeycomb" composed of aluminum contains zinc. In this case, the aluminized zinc coating also plays the role of anode protection. But on the one hand due to the reduction of zinc content on the one hand because zinc material is wrapped by aluminum is not easy to electrolyze so the role of anode protection is greatly reduced, so once the aluminum plated zinc plate is cut in the cut edge basically loss of protection will soon rust, so the aluminum plated zinc plate should be cut as little as possible once cut after the application of anti-rust paint or zinc rich paint to protect the edge, To be able to prolong the service life of the plate.
The surface of zinc plating plate is more fancy than galvanized plate, and the price of zinc plating plate is more expensive than galvanized plate. The price of small zinc flowers is more expensive than large zinc flowers.
The surface of aluminized zinc steel plate is characteristic of smooth, flat and gorgeous star flowers, the base color is silver white so that it has excellent corrosion resistance. The normal service life of aluminized zinc plate can be up to 25a good heat resistance can be used for 315℃ high temperature environment, coating and film adhesion is good, has good machining performance can be stamping, shearing, welding and other surface conductivity is very good.
The coating is composed of 55% aluminum, 43.4% zinc and 1.6% silicon by weight ratio, respectively. The production process of aluminized zinc steel plate is very similar to that of galvanized steel plate, which is a continuous melting plating process. And color products have excellent adhesion and flexibility.
Aluminized zinc plate has a high thermal reflectivity twice that of galvanized steel plate, so we can use it as insulation material. Aluminized zinc plate also has very good heat resistance, can withstand the high temperature of more than 300 degrees Celsius, and aluminized steel plate high temperature oxidation resistance is very similar, often used in chimney hall, oven, illuminator and daylight lampshade. Because 55%AL-Zn has a lower density than Zn, the weight is the same and the plating thickness is the same.
