Aluminized zinc steel plate is an important alloy material often used in daily life. The surface of aluminized zinc plate is unique smooth, flat and gorgeous star flower, and the base color is silver white. Special coating structure makes it have excellent corrosion resistance. Aluminized zinc plate has a normal service life of up to 25 years. It has good heat resistance and can be used in high temperature environment of 315℃. Coating and paint film adhesion is good, has good processing performance, can be stamping, cutting, welding, etc.; Surface conductivity is good.

The coating composition consists of 55% Aluminum and 43.4% Zinc and 1.6% Silicon by weight ratio, respectively. The production process of aluminized zinc plate is similar to that of galvanized steel plate and aluminized plate, which is continuous melting coating process. The 55% Al-Zinc-coated al-zinc-plated steel plate has better corrosion resistance than the galvanized steel plate of the same thickness when both sides are exposed to the same environment. The 55% Al-Zinc-coated Al-Zinc-coated steel plate not only has good corrosion resistance, but also has excellent adhesion and flexibility.

Because the steel plate will produce oxidation corrosion when affected by moisture, it is necessary to add an anticorrosive protective layer on the surface. Generally, the anticorrosive coating is divided into hot dip galvanized Zinc and hot dip aluminum zinc alloy Al-Zn(aluminum zinc alloy composition is 55% aluminum, 43.5% zinc and 1.5% silicon, referred to as 55%Al-Zn). Data show that 55% aluminum zinc coating comprehensive anticorrosion ability for the same thickness of zinc 4 times.

The anticorrosion coating of the base material of general molded steel plate (pit plate) shall not be less than hot dip galvanized 350g/㎡(Z35) or hot dip aluminum zinc 185 g/㎡(AZ185), The minimum hot-dip Zinc/Galvanizing specification for cold-rolled steel and floor slab of building structure is 275 g/㎡(Z27), and the requirement for exposed coastal parts is 350g/㎡(Z35).

Features:

1. Thermal reflectivity:

Aluminium-zinc steel plate has a high thermal reflectivity, twice that of galvanized steel plate, and is often used as an insulating material.

2. Heat resistance:

Aluminum zinc alloy steel plate has good heat resistance, can withstand the high temperature of more than 300 degrees Celsius, and aluminum plated steel plate high temperature oxidation resistance is very similar, often used in chimney tubes, ovens, illuminators and solar lampshades.

3. Corrosion resistance:

The corrosion resistance of aluminium-zinc steel coil is mainly due to aluminum, aluminum protection function. As the zinc wears away, the aluminum forms a dense layer of aluminum oxide that prevents corrosion resistance from further corroding the interior.

4. Economy:

Because the density of 55% Al-Zn is lower than that of Zn, the area of aluminized zinc plate is more than 3% larger than that of galvanized steel plate under the condition of the same weight and the same thickness of gold plating.

5 Easy to paint:

The aluminized zinc plate has excellent adhesion to the paint and can be painted without pretreatment and weathering. The coating adhesion of the gold layer of aluminum zinc plate is excellent, so it can be directly coated on advertising board or general use board without pretreatment.

6. Aluminized zinc steel plate with silver white, golden yellow, emerald green, porcelain blue and other gorgeous surface.

7. Aluminized zinc steel plate and galvanized steel plate has similar processing performance and spraying performance.

Application:

Construction: roofs, walls, garages, sound insulation walls, pipes and modular houses, etc

Automobile: muffler, exhaust pipe, wiper accessories, fuel tank, truck box, etc

Home appliances: refrigerator backboard, gas stove, air conditioner, electronic microwave oven, LCD frame, CRT explosion-proof belt, LED backlight, electrical cabinet and other agricultural use: piggery, chicken coop, granary, greenhouse pipes and so on

Other: heat insulation cover, heat exchanger, dryer, water heater, etc.

Galvanized plate and Aluminum Zinc plate difference:

Galvanized plate and galvanized plate mainly lies in the difference between the coating, galvanized plate surface evenly distributed a layer of zinc material, the base metal plays an anode protection role, that is to say, zinc material substitution corrosion protection of the use of the base metal, only when all the zinc corrosion can be damaged to the inside of the base metal. 

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 is honeycomb structure at the microscopic level, and the "honeycomb" composed of aluminum contains zinc. In this case, although the aluminized zinc coating also plays a role in anodic protection, But on the other hand due to the shrinking of zinc content on the one hand, because of the zinc material by aluminum bag not the role of electrolysis anode protection so greatly reduced, so once the aluminium zinc plate is cut, the cut off the edge of the protection of basic loss was will soon be under the condition of corrosion, so the plating aluminium zinc plate should be cut less as far as possible, once the cutting edge after application of antirust paint or high build zinc-rich paint protection, To prolong the service life of the plate.