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Difference Between Galvanized Sheet and Aluminized Zinc Sheet
Aluminized zinc plate is an alloy material, which has aluminum, so it has a lot of corrosion resistance. The high-temperature resistance can withstand more than three hundred degrees, and the density is small, so it can be stamped, sheared, welded, etc. The surface conductivity is very it is good. However, there are a lot of plates in the market. Many people will be confused about galvanized and aluminized zinc. So what’s the difference between the two? Let’s explore them together:
Tianjin Langfengda Company said: The difference between low price color corrugated steel sheet and aluminized zinc sheet is mainly due to the difference in the coating. The surface of the galvanized sheet is evenly distributed with a layer of zinc material, which plays an anodic protection role on the base material. The alternative corrosion of the zinc material protects the use of the base material. Only when the zinc is completely corroded can the base material inside be damaged.
The surface coating of the aluminized zinc plate is composed of 55% aluminum, 43.5% zinc and a small number of other elements. At the microscopic level, the surface of the aluminized zinc coating is a honeycomb structure. The “honeycomb” composed of aluminum contains zinc. In this case, although the aluminized zinc coating also plays the role of anodic protection, on the one hand, due to the reduction of zinc content, on the other hand, because the zinc material is not easily electrolyzed by the aluminum coating, the role of anodic protection is greatly reduced. The zinc plate is cut, and it will rust quickly when the cut edge is basically protected. Therefore, the aluminized zinc plate should be cut as little as possible. Once the edge is protected with rust-proof paint or zinc-rich paint, the edge can be made. Longer plate life.
The surface of the galvanized sheet is more beautiful than that of the galvanized sheet produced by China color corrugated steel sheet manufacturers. At the same time, the price of the galvanized sheet is more expensive than that of the galvanized sheet, and the price of the small zinc flower is more expensive than that of the large zinc flower.
In cities where the air is humid and rainy, once a certain point of the aluminized zinc plate is rusted, if you do not take measures in time, the place where the rust will slowly grow will eventually become larger and eventually the entire surface of the plate. It does not spread.
The surface of the aluminized zinc steel plate is characteristically smooth, flat and gorgeous starflower, and the base color is silver-white. The special coating structure makes it have excellent corrosion resistance. The normal service life of aluminized zinc plate can reach 25a, and the heat resistance is very good, and it can be used in the high-temperature environment of 315 ° C. The adhesion between the coating and the paint film is good, and it has good processability, which can be stamped, cut, welded, etc. The surface is very conductive.
The coating composition is composed of 55% of aluminum, 43.4% of zinc, and 1.6% of silicon, respectively, by weight ratio. The production process of the aluminized zinc steel sheet is similar to that of the galvanized steel sheet and aluminized sheet. It is a continuous molten coating process. Aluminized zinc steel plate with 55% aluminum-zinc alloy coating has better corrosion resistance than galvanized steel plate of the same thickness when both sides are exposed to the same environment. The 55% aluminum-zinc alloy plated aluminum-zinc steel plate not only has good corrosion resistance but also the color-coated products have excellent adhesion and flexibility.