GNEE STEEL offers a wide selection of 55% Aluminum-Zinc Alloy Coated Steel products. 55% Aluminum-Zinc Alloy Coated Steel is cold-rolled carbon steel with a metallic coating composed of Aluminum (55%), Zinc (43.4%) and Silicon (1.6%).
What is aluminum zinc alloy coated steel?
Aluminum-zinc alloy-coated steel is also known as galvalume. It is a type of metallic-coated steel product with a layer of aluminum, zinc, and silicon coated onto a steel sheet or coil. This coating provides both corrosion resistance and heat reflectivity to the steel, making it suitable for a wide range of applications.
55% Aluminum-Zinc Alloy Coated Steel offers a number of benefits as compared to other construction products. These benefits include...
Sustainability – 55% Aluminum-Zinc Alloy Coated Steel is 100% recyclable (can be melted back down for reuse) at the end of life which means less construction product going in landfills. In addition, its long service-life means the product will last longer without need for replacement.
Durability – the aluminum-zinc metallic coating forms a permanently bonded, tough, sacrificial coating that protects the steel from corrosion in most end-use applications. Proven Performance – the only steel substrate backed by a limited performance warranty.
Severe Conditions – 55% Aluminum-Zinc Alloy Coated Steel has superior long-term corrosion resistance in most atmospheric conditions. This is achieved through the combination of the sacrificial protection of the zinc and the barrier protection of the aluminum.
Coating Thickness
Coating thickness is measured as the coating weight in ounces per square foot. For example, a coating designation of AZ50 specifies there is a minimum coating weight of 0.50 ounces per square foot on both sides of the sheet. The most common coating thicknesses are AZ35, AZ50 and AZ55.
Surface Treatments
Chemical Treatment - A chemical surface treatment is available which consists of a thin, invisible, corrosion inhibiting, inorganic, chemical film applied on both sides of the metallic coated surface. This film is applied at the metallic coating line by dipping the steel strip into a solution of corrosion inhibiting chemicals. The chemically treated surface is much more resistant to "white rust" - the corrosion of zinc that typically occurs in humid conditions during storage or transportation.
