Steel Sheet in Coil

"Steel sheet in coil" is an alloy coating steel sheet with the best combination of aluminum and zinc components. This coating contains alloy elements such as aluminum, zinc, and silicon, and combines the corrosion resistance and heat resistance of aluminum with the electrochemical (sacrificial anode) performance of zinc.

The production process of aluminized zinc-coated coil is similar to that of hot-dip galvanized sheet. It uses cold-rolled coil as raw material and heats aluminum ingots and zinc ingots to form an aluminized zinc coating on the surface of the steel sheet. Aluminum has a physical protective effect and high durability, while the electrochemical properties of zinc prevent the steel sheet from corrosion. The combination of the two achieves the best anti-corrosion effect. Aluminized zinc-coated coils are mainly applied in occasions with high requirements for anti-corrosion performance, such as outdoor surfaces of high and low voltage distribution cabinets, electrical cabinets, steel grain warehouses, elevator carriages, etc. In addition, they are also suitable for coastal and riverine areas with humid environments, basements dehumidifiers, wine cabinets, etc.

• Thermal Reflectivity: The thermal reflectivity of aluminized zinc plate is very high, being twice that of galvanized plate. It is often used as a heat insulation material.
• Heat Resistance: The aluminum-zinc alloy plate has good heat resistance and can withstand temperatures above 300 degrees Celsius. Its oxidation resistance is similar to that of aluminized plate. It is often used in smoke pipes, ovens, lighting fixtures, fluorescent lamp covers, etc.
• Corrosion Resistance: The corrosion resistance of aluminized zinc coil is mainly attributed to aluminum. The protective effect of aluminum. When zinc is worn off, aluminum will form a dense layer of aluminum oxide to prevent further corrosion inside.
• Low Price: Due to the lower density of 55% AL-Zn compared to zinc, under the condition of the same weight and the same thickness of gold coating, the area of aluminized zinc plate is more than 3% larger than that of galvanized plate.
• Easy to Color: The adhesion between aluminized zinc plate and paint is excellent. It can be painted without pre-treatment and weathering treatment.
• The coating adhesion of the gold coating on aluminized zinc plate is relatively good. Therefore, it can be directly coated on billboards and general plates without going through pre-treatment such as weathering.

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