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Anodized Aluminum Sheet
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Anodized aluminum sheet is an aluminum product that has undergone an electrochemical anodizing process, forming a dense and stable aluminum oxide layer on the surface. This layer significantly improves corrosion resistance, surface hardness, and decorative appearance, while maintaining the lightweight characteristics of aluminum.
It is widely used in industries requiring both durability and aesthetic performance.
Base Material and Composition
Anodized aluminum sheets are typically made from common industrial aluminum alloys, including:
- 1000 series (1050, 1060, 1100) – high purity, excellent corrosion resistance
- 3000 series (3003, 3004, 3105) – good formability and moderate strength
- 5000 series (5052, 5083) – higher strength and marine-grade corrosion resistance
Typical Composition (Example – 3003 Alloy)
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Manganese (Mn) | 1.0 – 1.5 |
| Silicon (Si) | ≤ 0.6 |
| Iron (Fe) | ≤ 0.7 |
| Copper (Cu) | 0.05 – 0.20 |
| Zinc (Zn) | ≤ 0.10 |
The alloy composition ensures good anodizing performance and stable surface quality.
Key Properties of Anodized Aluminum Sheet
1. Excellent Corrosion Resistance
The anodized oxide layer provides a protective barrier, preventing oxidation and improving durability in outdoor and humid environments.
2. High Surface Hardness
Compared with untreated aluminum, anodized surfaces offer improved scratch resistance and wear resistance.
3. Decorative Appearance
The anodizing process allows for uniform coloring and metallic finishes, including natural silver, black, bronze, and custom tones.
4. Strong Adhesion and Stability
The oxide layer is integrated with the base metal, ensuring no peeling, flaking, or fading under normal conditions.
5. Lightweight Structure
Despite enhanced surface properties, the material retains aluminum’s low density of approximately 2.7 g/cm³.
6. Electrical Insulation
The oxide layer provides partial electrical insulation, useful in electronic applications.
Typical Performance Characteristics
| Property | Description |
|---|---|
| Surface Layer Thickness | 5 – 25 μm (standard range) |
| Hardness | Improved compared to base aluminum |
| Corrosion Resistance | Excellent |
| Weather Resistance | Strong |
| Maintenance Requirement | Low |
Common Applications of Anodized Aluminum Sheet
1. Architecture and Construction
- Curtain walls and facade panels
- Window and door frames
- Ceiling and wall decoration systems
- Exterior cladding panels
2. Electronics and Electrical Industry
- Device housings and enclosures
- Heat sinks and thermal components
- Control panels and protective covers
3. Transportation Industry
- Automotive interior and exterior trim
- Rail vehicle components
- Marine decorative and structural parts
4. Industrial Equipment
- Machinery covers and panels
- Control cabinets
- Nameplates and identification panels
5. Decorative and Commercial Use
- Signage and branding panels
- Elevator interiors
- Retail and exhibition displays
Advantages of Anodized Aluminum Sheet
- Strong corrosion and weather resistance
- Durable and scratch-resistant surface
- High-quality decorative appearance
- Long service life with minimal maintenance
- Environmentally friendly surface treatment process
Teda Ganghua – Supply Capability
Teda Ganghua provides anodized aluminum sheets with stable quality and flexible customization:
- Multiple alloy grades available (1000–5000 series)
- Various anodizing thickness options
- Custom colors and finishes
- Precision cutting and fabrication services
- Export-ready packaging and global logistics support
With strong processing capability and inventory support, Teda Ganghua delivers reliable anodized aluminum solutions for global B2B customers.
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