Aluminum-Zinc Plated Steel Sheets: Properties, Applications and Manufacturing

Aluminum-zinc coated steel sheets, a material further optimized on the basis of galvanized steel sheets, stand out for their excellent corrosion resistance. Its uniqueness lies in its aluminum-zinc alloy composition, which consists of 55% aluminum, 43.5% zinc and 1.5% silicon, and which, after solidification at a high temperature of 600°C, forms a dense quaternary crystal of aluminum, iron, silicon and zinc. This crystallization builds a strong barrier on the surface of the steel plate, providing a strong guarantee against corrosion.

Characteristics of Aluminum-Zinc Plated Sheet

Corrosion resistance

Aluminum-zinc alloy steel sheets owe their excellent corrosion resistance to the unique protective properties of aluminum and zinc. When the surface of the steel sheet is cut, scratched or scuffed, the zinc exerts its sacrificial protection, while the aluminum quickly forms a dense oxide layer, which acts as an excellent barrier. This dual protection mechanism gives Al-Zinc coated steel sheet excellent corrosion resistance.

Aluminum-zinc plated 55% alloy steel sheets have demonstrated excellent corrosion resistance in long term atmospheric exposure tests, whether in field, industrial, general coastal or severe marine areas. The corrosion resistance is two to four times higher than galvanized steel at the same coating thickness. In addition, aluminum has good heat-reflective properties, reflecting most UV rays and maintaining high reflectivity in the UV wavelength range.

Aluminum-zinc coated steel has excellent heat reflection properties, with twice the reflectivity of galvanized steel. This property makes it ideal for use as an insulating material, and it can also be used to make metal roofs made of steel for energy savings. In addition, zinc-aluminized exhibits excellent processability, including good toughness, bendability, unidirectional ductility and weldability. As a result, it can easily be cold-formed, stamped, and welded into a variety of shapes to meet the needs of different applications.

Aluminum-zinc-plated steel sheets are used in a wide range of applications, including construction sandals, floor slabs, three-dimensional parking garages, ventilation ducts, as well as home appliances and automobiles. Its excellent anti-corrosion properties and processability make Al-Zinc-plated steel sheet the preferred choice for color coated sheet substrates. In response to the characteristics of production environments in different industries, VISCOAT works closely with steel mills and coaters to develop innovative products to meet the specific needs of each industry.

Long-lasting beauty and 45 years of durability

Aluminum zinc plated steel sheets not only provide excellent corrosion resistance, but also excel in aesthetics and durability, maintaining their original qualities for a long time and providing stable and reliable support for a wide range of applications.

An added benefit for distributed PV roofs

Aluminum-galvanized steel sheets play a crucial role in distributed PV roofing systems. Its excellent corrosion resistance and long-lasting aesthetics make it the ideal choice for this system. In addition, its durability of up to 45 years provides stable and reliable support for distributed photovoltaic roofing, thus ensuring the long-term benefits of the system.

Tight protection in highly corrosive environments

When faced with highly corrosive environments, zinc-aluminum-plated steel sheets provide a strong shield for distributed PV roofing systems thanks to their excellent corrosion resistance. Its unique anti-corrosion properties enable the system to remain stable in harsh environments, ensuring the safety and durability of the system.

Livestock special color coated sheet

Specially designed and treated to meet the needs of the livestock industry, the color coated panels not only provide excellent corrosion resistance, but are also easy to clean and maintain. Its vibrant colors and durability allow it to excel in livestock environments, contributing to the safety and efficiency of the livestock industry.