5083 Color Coated Aluminum Coil

5083 color-coated aluminum coil is a composite material made by applying chemical pretreatment and a colored coating on the surface of 5083 aluminum coil substrate. It not only inherits the excellent corrosion resistance of the 5083 alloy (especially against seawater and industrial environments), high strength, and superior weldability, but also gains outstanding decorative properties and additional protection through the color coating layer.

5083 aluminum alloy belongs to the Al-Mg series and is one of the highest-strength alloys in this group. It is often known as a "marine-grade aluminum alloy." The addition of magnesium significantly increases the strength of aluminum while maintaining good ductility; the addition of manganese and chromium further enhances corrosion resistance and processability.

Chemical Composition of 5083 Color-Coated Aluminum Coil (%)

Common Coating Types

Advantages of 5083 Coated Aluminum Coil

1. Excellent corrosion resistance & long service life:
   The marine-grade corrosion resistance of 5083 substrate combined with the superior weatherability of PVDF coating ensures long-term structural stability and appearance even in harsh environments such as coastal regions, high-salt areas, or heavy industrial pollution.

2. High strength with lightweight performance:
   Retains the high strength of 5083 alloy, suitable for load-bearing structural parts, while benefiting from aluminum's inherent lightweight nature to reduce overall structural weight.

3. Cold-working capability:
   Thin-walled parts such as fuel tanks and lubrication pipes can be formed through deep-drawing processes. Plasticity remains good in semi-cold-worked conditions, but decreases after extensive cold-work hardening.

4. Aesthetic and functional integration:
   The color coating offers rich colors and surface effects (glossy, matte, metallic, brushed), meeting personalized design needs for architectural and transportation applications.

5. Excellent processing performance:
   Maintains good formability and can be stamped, bent, or deeply fabricated without damaging the coating.

6. Environment-friendly performance:
   Resistant to salt, alkali, and acid rain; does not corrode, produce toxic bacteria, release harmful gases, or cause corrosion of keels and fasteners. Fire resistance meets or exceeds national B1 rating.

7. Flatness:
   No high-temperature composite indentations, no residual stress, and the sheet remains flat without deformation after cutting.

Specifications of 5083 Color-Coated Aluminum Coil

Mechanical Properties

Physical Properties

Applications of 5083 Color-Coated Aluminum Coil

1. Marine & Offshore Engineering

Widely used in shipbuilding and offshore structures, including hull structures, decks, bulkheads, and offshore platform components.
For this industry, H116 and H321 tempers are commonly used for optimal salt-spray corrosion resistance.

2. Transportation Industry

In new-energy vehicles, 5083-O battery shell side plates have become a key application, offering tensile strength above 280 MPa plus excellent forming and corrosion resistance.

Color-coated aluminum coils are also used in truck bodies, oil tankers, coal transport vehicles, and other commercial vehicles-balancing durability with lightweight design.

3. Construction & Decoration

Used for roofing, wall cladding systems, and decorative components of large public buildings, offering long-lasting protection and durability.

4. Special Industrial Applications

Applied in pressure vessels, LNG storage tanks, TV towers, and specialized industrial equipment, as well as electrical enclosures and high-voltage switchgear.

Color Options

Production Process of 5083 Color-Coated Aluminum Coil

• Substrate preparation: Use hot-rolled 5083 aluminum coil, then anneal and level.

• Surface pretreatment: Degreasing, water washing, and chemical conversion coating to enhance adhesion.

• Coating application: Precision roller-coating to ensure uniform paint thickness and gloss.

• High-temperature curing: Cured at around 200°C to form a dense protective film; embossing, printing, or film-lamination can be added as needed.

• Cooling and coiling: After cooling, leveling, and coiling, the finished color-coated aluminum coil is produced.