Differences in Zinc Spangles of Galvanized Steel Coils and Factors Affecting Zinc Spangle Sizes

In the sTeel industry,#galvanized steel Coils are widely used due to their excellent corrosion resistance. Today, let's discuss the differences between large Spangles, regular spangles, zero spangles, and galvalume spangles.

1. Large Spangle

• Characteristics: The surface has larger spangles, typically due to a thicker zinc layer during the galvanizing process.
• Applications: Suitable for environments with high corrosion requirements, such as chemical and construction industries.

2. Regular Spangle

• Characteristics: The Spangles are of medium size, with a moderate zinc layer thickness; this is the most common type of galvanized steel coil.
• Applications: Widely used in appliances, automobiles, and other industries, offering a good cost-performance ratio.

3. Zero Spangle

• Characteristics: The surface has almost no zinc spangles, with a thin zinc layer, primarily to achieve a smooth and aesthetic appearance.
• Applications: Suitable for products that require high aesthetic standards, such as furniture and decorative materials.

4. Galvalume Spangle

• Characteristics: The surface exhibits the properties of an aluminum-zinc alloy, with smaller and more uniform zinc spangles, providing enhanced corrosion resistance.
• Applications: Suitable for high-temperature and high-humidity environments, such as solar equipment and roofing materials.

Factors Affecting Zinc Spangle Sizes

The size of zinc spangle is mainly influenced by the following factors:

Galvanizing Temperature: Higher galvanizing temperatures can lead to larger zinc spangles.

Zinc Bath Composition: The content of other elements in the zinc bath (such as aluminum and magnesium) can affect the morphology and size of zinc spangles.

Cooling Rate: A slower cooling rate may result in larger zinc spangles.

Substrate Surface Treatment: The roughness and cleanliness of the substrate surface can influence the formation of zinc spangles.

Summary

Different types of zinc spangles are suitable for various application scenarios. Choosing the right galvanized steel coil can enhance the product's lifespan and aesthetic appeal.