55%-AL Aluminum-Zinc Coated Steel Sheet (GL)

55%-AL aluminized steel coil, also known as GL (Galvalume), is a continuous hot-dip metal coated steel coil composed of 55% aluminum and 45% zinc. Compared to traditional galvanized steel, the combination of aluminum and zinc enhances corrosion resistance and extends service life.

The aluminized layer on the steel coil has several advantages. First, even in harsh environments, the aluminum in the coating provides excellent corrosion barrier protection. It acts like a sacrificial layer, protecting the underlying steel from rust and maintaining its structural integrity.

Secondly, the zinc in the aluminized zinc layer actively corrodes to protect any exposed edges or scratches on the steel surface, providing electrochemical protection. This sacrificial protection ensures long-lasting performance and prevents corrosion from spreading throughout the steel coil.

55%-AL aluminized steel coils are widely used in various fields, including roofing, wall cladding, structural components, and automotive manufacturing. Its excellent corrosion resistance and durability make it suitable for both indoor and outdoor applications, even in highly corrosive environments.

Additionally, aluminized zinc steel coils have excellent heat reflectivity, which can reduce heat entering buildings or structures in hot climates, thereby improving energy efficiency. This feature helps lower energy consumption and enhances comfort.

55%-AL aluminized steel coils are available in various thicknesses and widths to meet different project requirements. Depending on specific design needs, the coils can also be further processed into sheets, profiles, or other customized shapes.

Product Specifications