| Customization: | Available |
|---|---|
| Color: | as Request |
| Application: | Transportation Tools, Door & Window, Glass Wall, Decorations |
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Product Description:Aluminum-coated color coil is a high-performance composite material made of high-quality steel substrate (such as HX180/220 high-strength steel) by hot-dip aluminized or aluminum-zinc alloy (such as Aluzinc®), and the surface is coated with PVDF or PE color coating. With a standard width of 1000mm or 1200mm and a thickness of 0.5mm, it combines metal strength with lightweight, making it ideal for construction, industry and new energy sectors.
Aluminum-Zinc Alloy
Typical composition: 55% aluminium (Al) + 43.4% zinc (Zn) + 1.6% silicon (Si)
Representative brands: Galvalume® (Steelunion patent), Aluzinc® (European common name)
Performance characteristics:
Synergistic corrosion protection: Aluminum provides long-term corrosion resistance (inert protection) and zinc acts as a sacrificial anode for preferential oxidation, filling the risk of corrosion at scratches or cuts.
High temperature resistance: The high melting point of aluminum (660°C) makes the alloy layer more stable in high-temperature environments, and is suitable for industrial high-temperature areas (such as chimney walls).
Salt spray life: The salt spray test can reach 1000-1500 hours (only 300-500 hours for ordinary galvanized sheet), which is suitable for high-corrosion environments such as coastal and chemical plants.
Pure Aluminum Coating
Composition: ≥99% aluminum (Al), containing trace amounts of iron (Fe), silicon (Si) and other elements.
Applicable Scenarios:
Extreme weather resistance: e.g. strong acid/alkali environments (chemical plant housings).
Electromagnetic shielding: The conductivity of pure aluminum is better than that of aluminum-zinc alloy, which is used for the protection of battery shells and electronic equipment of new energy vehicles.
3. Other improved alloys
Aluminum-magnesium alloy (Al-Mg): Magnesium (2-5%) is added to improve strength and seawater corrosion resistance, and is used in ships and offshore platforms.
Aluminum-silicon alloy (Al-Si): The silicon content is increased to 8-12%, which enhances the adhesion between the coating and the steel substrate and reduces the risk of cracking during processing
Scientific design logic of alloy composition:
| Element | Function |
|---|---|
| Aluminium (Al) | Forms a dense oxide film (Al2O3) that blocks water and oxygen permeation and provides long-term weather resistance. |
| Zinc (Zn) | As a sacrificial anode, corrosion is prioritized to protect steel substrates, especially in weak areas such as cuts and edges. |
| Silicon (Si) | Inhibits the overreaction between the aluminum-zinc alloy and the steel substrate, improves the adhesion of the plating layer, and reduces the "leakage" defect. |
Basic Info.
| Product | 0.5mm × 1000mm/1200mm aluminum coated colored coil |
| Thickness | 0.5mm |
| Width | 1000-1200mm |
| Material | commonly used 3000 Serise aluminum (as request) |
| Temper | o,H14, H18, H24, H26,(General status) |
| Inner Diameter | 405mm,505mm,150mm,etc. |
| Color | Silver White Black Red Blue Green Custom - matched colors according to Pantone or RAL color systems |
| Coating thickness | PVDF Paint Coating: Not Less Than 25um |
| PE Paint Coating : Not Less Than 18um | |
| Packing | Export Standard Wooden Pallets (Eye To Wall,Eye To Sky) |
| Payment Terms | L/C at sight or 30% T/T in advance as deposit, and 70% balance against the B/L copy. |
| MOQ | 2Tons Per Specification |
| Delivery Time | Within 30-45 Days |
| Loading Port | Shanghai,Ningbo,Qingdao,Tianjin Port and Etc |
| Application | Aluminum Roofing,ACP,Roller Shutter Window,Roller Shutter Door,Aluminum Ceiling,Aluminum Grilling,Aluminum Downspout System,Home Appliance's Plate, body tank of cold chain truck,high speed rail,aluminum pull ring,food packaging,outer packing case of capacitor,external contour of letter channel |
| Alloy type | Best use cases | Performance comparison |
| Aluminum-zinc alloy (55% Al) | Building roofs/walls, cold chain logistics, photovoltaic brackets | It is cost-effective, has the best comprehensive corrosion resistance, and accounts for 70% of the global market share |
| Pure aluminium coating | Chemical equipment, electromagnetic shielding enclosures, high-temperature industrial environments | More resistant to chemicals, but more expensive (20-30% more expensive than aluminum-zinc alloys) |
| Aluminum-magnesium alloy | Offshore engineering, ship decks, coastal bridges | 50% increase in seawater corrosion resistance |
Relevant certificates:
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