What is Anodized Aluminum Panel? A Facade Material Favored by Architects
2026-01-22
What is Anodized Aluminum Panel? A Facade Material Favored by Architects
The application effect of anodized aluminum panels on large - scale building curtain walls is remarkable. With a matte texture, they still retain a strong metallic luster. Their excellent ability to present the fluidity of building facades has made them highly favored by architects.
What is an anodized aluminum panel? Anodized aluminum panels are produced by placing aluminum sheets in a corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid, etc.) as the anode, and conducting electrolysis under specific conditions and the action of an external electric current. This process forms a dense oxide film on the surface of the aluminum sheets. By leveraging the colorless and porous nature of the anodic oxide film, the panels achieve the dual purposes of coloring and protecting the aluminum substrate. (An aluminum oxide thin layer is formed on the anodized surface of the aluminum sheets, with a thickness ranging from 5 to 20 microns; the thickness of a hard anodic oxide film can reach 60 to 200 microns.)
01 Material Properties
- Excellent WorkabilityAnodized aluminum panels boast strong decorative appeal and moderate hardness. They can be easily bent and formed, and undergo continuous high - speed stamping. They can be directly processed into finished products without the need for complex surface treatment, which greatly shortens the production cycle and reduces production costs.
- Superior Weather ResistanceAnodized aluminum panels with a standard - thickness oxide film (3μm) maintain their color, resist corrosion, oxidation, and rust during long - term indoor use.Panels with a thickened oxide film (10μm) are suitable for outdoor applications and can resist discoloration even when exposed to long - term sunlight.
- Strong Metallic FeelThe surface of anodized aluminum panels features high hardness, reaching gemstone grade, and exhibits excellent scratch resistance. Without any paint coating on the surface, they preserve the inherent metallic luster of aluminum, highlight a modern metallic aesthetic, and enhance the product grade and added value.
- Good Fire ResistanceAs pure metal products, they contain no paint or any chemical substances on the surface. They do not burn at a high temperature of 600℃ and do not produce toxic gases, complying with fire safety and environmental protection requirements.
- Strong Stain ResistanceThey do not retain fingerprints or leave stain marks, are easy to clean, and will not develop corrosion spots.
- Wide ApplicabilityThey have a broad range of applications, including metal aluminum ceilings, curtain wall aluminum panels, aluminum - plastic composite panels, fireproof panels, honeycomb aluminum panels, aluminum veneers, electrical appliance panels, cabinet panels, and furniture panels.
However, this material also has drawbacks: first, color difference control; second, edge - folding tearing.
02 - Construction Technology
Anodizing Process Flow: Degreasing → Etching → Neutralizing → Anodizing → Coloring → Sealing
03 - Material Cost
The material is relatively high - priced. The price of imported products is about 1,000–3,000 yuan per square meter, while that of domestic anodized aluminum panels ranges from around 500–1,000 yuan per square meter. (Prices vary by quality and are for reference only.)
04 - Application Cases
Anodized aluminum panels have an extremely wide range of applications, such as building facades, curtain walls, decorations, lighting fixtures, crafts, household appliances, interior decoration, signage, furniture, and automotive trim, etc.
1. Application in Building Curtain Walls
Located at the hub of the coastal urban belt in eastern China and the Yangtze River Delta, the Yangtze River International Conference Center is a world - class global connectivity hub. It also serves as a key asset for Nanjing’s westward expansion across the Yangtze River toward the new urban center in Jiangbei.
To better integrate into the dual contexts of the Jiangbei Metropolitan Area and the banks of the Yangtze River, the exterior of the Yangtze River International Conference Center embodies both urban architectural features and undulating curved lines. The north side of the tower faces the city, and its facade adopts a metal sunshade system using anodized aluminum panels, which achieves a composite effect: during the day, the metal curtain wall serves for sunshading and energy efficiency enhancement; at night, the lighting system integrated into the curtain wall endows the building with a distinctive appearance. The south side of the tower faces the Yangtze River, and its winding and undulating facade echoes the natural riverside scenery. The curtain wall is composed of more than 90,000 specially fabricated anodized aluminum panels and glass panels.
In the future, as the technology of anodized aluminum panels matures, a growing number of high - aesthetic curtain walls will come into view and become popular check - in spots one after another. At Ballesta, we are also committed to providing high - quality anodized aluminum panels. Trust us—we will tailor - make unique anodized aluminum panels exclusively for you！
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