Aluzinc steel sheets are coated with a layer composed of 55% aluminum, 43.5% zinc, and a small amount of other elements, including 1.6% silicon. The structure, formed at 600°C, consists of a dense four-component alloy coating made of aluminum, iron, silicon, and zinc. Aluzinc steel sheets offer better corrosion resistance compared to galvanized steel sheets. Galvanized steel sheets are primarily used in industries such as construction, light industry, agriculture, and fishing, whereas Aluzinc steel sheets are commonly used in the construction, automotive, and home appliance industries.
Aluzinc steel sheets are a type of alloy-coated steel sheet. Their excellent corrosion resistance is mainly due to the protective function of aluminum. When zinc wears away, aluminum forms a dense layer of aluminum oxide, preventing further corrosion of the underlying material. The unique and smooth surface gives the material an attractive and brilliant starry pattern with a base color of silver-white. The special coating structure provides superior corrosion resistance. The lifespan of Aluzinc steel sheets is several times longer than that of ordinary galvanized steel sheets. They are often used as concealed waterproof panels in curtain wall projects.
How to Differentiate Aluzinc Steel Sheets from Other Materials
Aluminum Honeycomb Panels primarily use high-quality 3003H24 alloy aluminum plates or 5052AH14 high-manganese alloy aluminum plates as the base material. The panel thickness is 0.8-1.5mm, with fluorocarbon coating or color-resistant paint. These panels offer excellent scratch resistance, acid rain corrosion resistance, discoloration resistance, and strong self-cleaning properties. The base plate thickness ranges from 0.6 to 1.0mm, with a total thickness of 25mm. The aluminum foil thickness is 0.04-0.06mm, with side lengths of 5-6mm. The panels are formed using roll-forming technology, with fully automatic machinery ensuring precise folding edges and tight connections during installation. Thanks to the significant amount of air in the core, aluminum honeycomb panels have excellent soundproofing properties and better flatness than aluminum single panels or honeycomb aluminum panels.
Titanium Zinc Sheets are made from high-purity metal zinc (99.995%) with small amounts of titanium and copper. Titanium content (0.06%-0.20%) enhances the alloy’s resistance to creep, while copper (0.08%-1.00%) increases its hardness. These sheets form a self-protecting zinc carbonate layer on their surface, preventing further corrosion without the need for paint protection. With a genuine metallic texture, titanium zinc sheets feature the unique ability to self-heal scratches and require no maintenance, making them highly durable.
Aluminum Magnesium Manganese Alloy Sheets mainly use the 3000 series aluminum. Their surface treatment includes non-painted and painted products. Non-painted options include hammered aluminum alloy sheets (with irregular patterns) and embossed plates. Pre-passivated oxidized aluminum sheets have low surface appearance requirements and are more affordable. The painted products include spray-coated sheets, pre-roll-coated sheets with polyester, polyamide, modified silicon, epoxy resin, or fluorocarbon coatings. These sheets are primarily used in roofing systems.
Conclusion
Aluzinc steel sheets, with their unique composition and superior corrosion resistance, are ideal for specific applications, such as in the automotive and home appliance industries. Other materials, such as aluminum honeycomb panels, titanium zinc sheets, and aluminum magnesium manganese alloy sheets, also offer distinct advantages for different applications. It is important to choose the appropriate steel sheet based on the specific needs and desired properties for a given project.
