Aluminized Steel Plate: Properties, Applications, and Advantages
Aluminized Steel Plate: Properties, Applications, and Advantages
What is Aluminized Steel?
Aluminized steel is carbon steel coated with a layer of pure aluminum or an aluminum-silicon alloy containing 5% to 10% silicon. This coating gives the steel excellent high-temperature oxidation resistance, maintaining its color even at 450°C, with a maximum usable temperature of up to 750°C.
Aluminized steel also offers superior atmospheric corrosion resistance, particularly against gases like SO₂, H₂S, and CO₂, making it 3-6 times more resistant than galvanized steel.
Applications of Aluminized Steel
Aluminized steel is widely used in industries requiring both high-temperature and corrosion resistance.
Automotive Industry
- Exhaust systems
- Silencers
- Body chassis
- Engine heat shields
Home Appliances and Heat-Resistant Devices
- Heat exchangers
- Ovens and furnace linings
- Chimneys and hot air ducts
- Grain dryers
- Furnace reflectors
- Food oven linings
- Showers and radiators
Other Uses
- Residential and commercial heating, ventilation, and air conditioning (HVAC) systems
- Household appliances
- Engine components
Advantages of Aluminized Steel
1. Excellent Corrosion Resistance
Aluminized steel forms a dense Al₂O₃ oxide film on the surface, which isolates the steel base from the oxidizing environment. This significantly enhances its corrosion resistance, even under harsh conditions, and provides better resistance to nitric acid and seawater compared to galvanized products. Aluminized silicon products have corrosion resistance several to ten times that of galvanized materials.
2. High-Temperature Resistance
Aluminized steel has excellent resistance to high temperatures, maintaining high reflectivity at 450°C and showing minimal change below 550°C. It retains a bright appearance even after long-term exposure to heat.
3. Superior Heat Reflectivity
Aluminized steel reflects about 80% of light at temperatures below 500°C and up to 95% of infrared light. This makes it ideal for use as thermal barriers or reflectors in high-temperature environments.
Additional Services
We also provide steel pipes, hollow sections, ZN-AL-MG coated steel, and aluminized steel pipes. Additional services such as profiling, shearing, and cutting are available.
In summary, aluminized steel’s durability in both high-temperature and corrosive environments makes it ideal for a variety of industrial applications.
