What are the differences between aluminized steel sheets, aluminum-zinc sheets, and galvanized sheets, and how to choose among them?
Published: 2018-07-16 Views: 5698

       

Aluminized Steel Sheet

Aluminized steel sheet, also known as aluminized steel, is sometimes referred to as aluminized steel or hot-dip aluminized steel. It is a steel sheet coated with an aluminum-silicon alloy, consisting of approximately 90% aluminum and 10% silicon. Aluminized steel exhibits excellent heat resistance, thermal reflectivity, and corrosion resistance. Its mechanical and physical properties are superior to those of cold-rolled steel. Due to these superior characteristics, it has been widely adopted in various consumer goods, such as automotive mufflers and household appliances.

Aluminum-Zinc Coated Steel Sheet

Aluminum-zinc coated steel sheets feature a unique, smooth, flat, and lustrous "star-pattern" surface with a silvery base color. This specific coating structure grants it excellent corrosion resistance. Under normal conditions, aluminum-zinc sheets can last up to 25 years. They exhibit very good heat resistance and can be used in high-temperature environments up to 315°C. The coating has strong adhesion to paint films and offers good workability, allowing for stamping, cutting, and welding. The surface also has excellent electrical conductivity.

Applications:

  • Construction: Roofs, walls, garages, soundproof walls, pipes, and prefabricated houses.
  • Automotive: Mufflers, exhaust pipes, wiper attachments, fuel tanks, and truck boxes.
  • Home Appliances: Refrigerator back panels, gas stoves, air conditioners, electronic microwave ovens, LCD frames, CRT anti-explosion bands, LED backlights, and electrical cabinets.
  • Agriculture: Pig pens, chicken coops, grain silos, and greenhouse pipes.
  • Others: Thermal insulation covers, heat exchangers, dryers, and water heaters.

Galvanized Steel Sheet

Galvanized steel sheets are designed to prevent surface corrosion and extend the service life of the steel. This is achieved by coating the steel surface with a layer of metallic zinc. Galvanized strip products are primarily used in the construction, light industry, automotive, agriculture/fishery, and commercial sectors.

  • Construction: Manufacturing corrosion-resistant industrial and civil building roof panels, roof trusses, etc.
  • Light Industry: Manufacturing appliance casings,民用 chimneys, kitchen utensils, etc.
  • Automotive: Manufacturing corrosion-resistant components for cars, primarily in passenger vehicles.
  • Agriculture/Fishery: Used as grain storage and transport facilities, as well as freezing equipment for meat and aquatic products.
  • Commercial: Used as storage, transport, and packaging containers for goods.