White coated aluminium sheet
White coated aluminium sheet is a high-performance product widely used across various industries due to its excellent combination of strength, corrosion resistance, and aesthetic appeal. The coating not only enhances the natural durability of aluminium but also adds a layer of protection and style with its bright white finish.
Features
- Durability: The aluminium substrate provides high strength and corrosion resistance, especially when coated.
- Aesthetic Appeal: The bright white coating offers an attractive, clean, and uniform finish for a professional appearance.
- Weather Resistance: The coating imparts excellent resistance to UV rays, moisture, and environmental pollutants.
- Lightweight: Retains aluminium’s lightweight characteristics, reducing structural load when used in construction.
- Ease of Fabrication: Suitable for various manufacturing processes including bending, cutting, stamping, and riveting.
- Low Maintenance: The coated surface is easy to clean and maintain, providing a long-lasting finish.
Technical Specifications
Chemical Composition
| Element | Composition (%) |
|---|---|
| Aluminium (Al) | 98.3 - 99.0 |
| Silicon (Si) | 0.3 - 0.5 |
| Iron (Fe) | ≤ 0.4 |
| Copper (Cu) | ≤ 0.1 |
| Manganese (Mn) | ≤ 0.1 |
| Magnesium (Mg) | ≤ 0.1 |
| Zinc (Zn) | ≤ 0.1 |
| Titanium (Ti) | ≤ 0.1 |
| Others | ≤ 0.05 |
The table presents a typical composition based on commonly used alloys suitable for white coated aluminium sheets, such as the 1xxx and 3xxx series.
Physical & Mechanical Properties
| Property | Typical Values |
|---|---|
| Density | 2.70 g/cm³ |
| Hardness (HB) | 30 - 60 (depending on alloy and temper) |
| Tensile Strength | 110 - 250 MPa |
| Yield Strength | 65 - 180 MPa |
| Elongation at Break | 5 - 30% |
| Thermal Conductivity | ~235 W/m·K |
| Coating Thickness | 15 - 30 microns |
| Sheet Thickness Range | 0.2 mm to 3.0 mm |
| Width Range | Up to 1500 mm |
Coating type generally involves PVDF (Polyvinylidene Fluoride) or polyester paint, offering high durability and weather resistance.
Performance and Benefits
Corrosion Resistance
The white coated aluminium sheet excels in various environments due to its dual nature of corrosion-resistant aluminium and a robust coating barrier. This prevents issues such as oxidation and surface degradation, ideal for outdoor or moist environments.
Weather and UV Resistance
The applied coating, usually PVDF or polyester-based, offers protection against UV radiation, ensuring that the white color remains vibrant over decades without chalking or fading, essential for exterior cladding applications.
Thermal Reflectivity
The white surface provides excellent reflectivity of solar radiation, helping reduce heat absorption and contributing to energy efficiency, especially in roofing or facade systems.
Ease of Installation and Fabrication
Its manageable weight combined with molding flexibility enables efficient fabrication and adaptation into varied designs and shapes, reducing processing costs.
Applications
| Industry | Typical Uses |
|---|---|
| Building & Construction | Exterior wall cladding, roofing panels, soffits, gutters, and facades. |
| Transportation | Panels and internal components in vehicles, trains, aircraft for lightweight bodywork. |
| Signage & Displays | Outdoor advertising boards, industrial signage due to aesthetic finish and weather resistance. |
| Appliances | Casings for HVAC units, home appliances to provide weather protection and decoration. |
| Home Interiors | Decorative panels, ceiling tiles, partition walls benefiting from durability and clean aesthetics. |
The white coated aluminium sheet is a versatile, durable, and aesthetically pleasing material offering a robust solution for outdoor and indoor applications where corrosion resistance and appearance are vital. With excellent mechanical properties, precise manufacturing tolerances, and long-lasting coatings, it is an ideal choice for modern architectural, transportation, and industrial needs.
Should you require specific assistance with dimensional customization or use particular alloys or coating types, consulting with material specialists can help tailor the product to your requirements.
For further information or to request a sample, please contact our technical sales department.
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