Hot Aluminum Zinc Steel, often referred to as galvalume steel, is a widely used metal product known for its excellent combination of strength, corrosion resistance, and versatility. This type of steel is coated with a mixture of aluminum (55%), zinc (43.5%), and silicon (1.5%) through a continuous hot-dipping process, creating a robust and long-lasting protective layer.
Key Features of Hot Aluminum Zinc Steel
1. Excellent Corrosion Resistance
Hot Aluminum Zinc Steel offers outstanding corrosion resistance due to its unique alloy coating. The aluminum component forms a durable oxide layer that protects the steel substrate from environmental elements, while the zinc provides sacrificial protection, preventing rust formation in case of minor scratches or damage.
2. High Heat Reflectivity
The aluminum component in the coating allows Hot Aluminum Zinc Steel to reflect a significant portion of solar radiation. This high reflectivity makes it an ideal material for roofing and siding applications, helping to reduce heat absorption and improve energy efficiency in buildings.
3. Superior Durability
With its combination of aluminum and zinc, this steel exhibits exceptional durability and longevity, even in harsh environmental conditions. It is more resistant to oxidation and wear compared to traditional galvanized steel, making it a cost-effective solution for long-term projects.
4. Formability and Versatility
Hot Aluminum Zinc Steel maintains excellent formability, allowing it to be easily bent, rolled, and fabricated without compromising the protective coating. This versatility makes it suitable for a wide range of applications, including roofing, cladding, automotive parts, and home appliances.
5. Smooth and Aesthetic Finish
The hot-dip coating process results in a smooth and attractive finish, often described as "spangled." This aesthetic quality makes it an appealing choice for applications where appearance matters, such as exterior panels and decorative elements.
6. Self-Healing Properties
When the coating is scratched or cut, the zinc component provides sacrificial protection by corroding in place of the steel substrate. This self-healing mechanism extends the lifespan of the material by reducing the risk of rust spreading.
