Why Aluminized Products Are Ideal for the Automotive Industry
Why Aluminized Products Are Ideal for the Automotive Industry
The automotive industry requires materials with high plasticity and ductility for various accessories, stampings, and pressed parts. Aluminized, composed of 90% aluminum and 10% silicon, is lightweight and has a low density, making it well-suited for these applications. Its excellent processing performance allows it to be easily formed into rods, sheets, foils, powders, strips, and wires, which are essential for automotive components.
High-Temperature Resistance
Aluminized products are particularly suitable for automotive exhaust pipes, fuel tanks, and other parts due to their high-temperature resistance. The combination of a steel substrate and an aluminized coating forms an iron-aluminum alloy, giving the aluminum-plated steel excellent resistance to high temperatures. The coating maintains high reflectivity at 450℃ and forms a protective gray layer at temperatures above 480℃. Even at 650℃, the protective layer remains intact, preventing oxidation and ensuring durability.
Corrosion Resistance
In addition to high-temperature resistance, aluminized products offer strong corrosion resistance, a critical requirement in the automotive industry. During the hot-dip plating process, the molten aluminum reacts with oxygen in the air to form a stable Al2O3 protective layer. This layer passivates the surface of the steel sheet, is insoluble in water, and has a self-healing function if scratched. This ensures that aluminum-plated sheets are highly resistant to chemical corrosion.
Conclusion
Due to their lightweight, high-temperature resistance, and strong corrosion resistance, aluminized products are widely used in the automotive industry. Their versatility and durability make them an ideal choice for a variety of automotive applications.
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