Custom RAL Color 5052 Aluminum Coil

As an experienced manufacturer of color-coated aluminum coils, HAOMEI Aluminum can customize coil colors according to customer requirements. Customers may select any shade from the RAL color chart or provide a physical color sample for testing. Using 5052 color-coated aluminum coil as an example:

5052 color coated aluminum coil uses an aluminum-magnesium alloy as the base material, with a magnesium content between 2.2% and 2.8%. This composition provides good tensile strength and elongation. The surface is treated with a uniform, strongly adherent coating that effectively resists UV degradation and acid-alkali corrosion. It is widely used in building decoration, transportation, and other industries.

Coating Types

PVDF (Polyvinylidene Fluoride):
Offers the highest weather resistance, long-term UV protection, and excellent stain resistance. Ideal for exterior wall cladding, facades, and roofing in highly exposed environments. Higher cost but long service life (typically 15-25 years).

PE (Polyester):
Cost-effective with moderate weathering and stain resistance. Suitable for interior decoration, non-extreme exterior conditions, or budget-sensitive applications.

Super Polyester / SMP:
An enhanced polyester coating with performance between PE and PVDF.

Multi-layer inorganic/organic composite coatings:
Used for special functionalities such as fire resistance, scratch resistance, or antibacterial performance.

Advantages of 5052 Color Coated Aluminum Coil

1. Exceptional Weather Resistance:
   When coated with PVDF, the coil delivers outstanding UV resistance, anti-chalking properties, and strong resistance to acid rain, ensuring excellent color retention.

2. Superior Formability:
   The 5052 base material combined with flexible, high-performance coatings allows deep drawing, bending, and high-speed forming without cracking or peeling.

3. Extensive Color Customization:
   Colors can be precisely matched according to RAL or Pantone codes. Color difference (ΔE) can be controlled to ≤1.0.

4. Lightweight and Energy Saving:
   Aluminum has a lower density than steel, reducing building loads and simplifying structural design. It is also fully recyclable.

5. High Flatness and Visual Appeal:
   Continuous roll coating ensures surface uniformity and excellent flatness, with no visible coating marks or color deviation.

6. Dual Corrosion Protection:
   The coating provides the first layer of protection, and the 5052 alloy serves as a second corrosion barrier, forming a robust protective system.

Technical Specifications of RAL Color 5052 Aluminum Coil

Applications of 5052 Coated Aluminum Coil

• Building Exterior Walls and Roofing:
  Used for façades, honeycomb panels, and corrugated panels in commercial complexes, stadiums, and landmark buildings.

• Transportation:
  Ideal for interior and exterior components of trains, buses, and trucks that require lightweight materials and consistent brand colors.

• Industrial and Electrical Products:
  Applied in home appliance panels, electronic enclosures, and industrial equipment casings with customized colors.

• Interior Decoration:
  Used for ceilings, partitions, and custom furniture requiring specific aesthetic styles.

Color Customization Workflow

1. Requirement Definition:
   Confirm RAL code, gloss level, thickness, width, coating system, application environment (indoor/outdoor, coastal, industrial, etc.).

2. Technical Coordination:
   Confirm temper (H32/O), pre-treatment process, coating formulation, and sample preparation schedule.

3. Sample Approval:
   Produce small samples (a sheet or a small trial coil) for lab/onsite testing, covering gloss, color difference, and adhesion.

4. Trial Production Batch:
   Conduct small-batch trial production and optional accelerated weathering/salt-spray tests to evaluate long-term performance.

5. Contract Finalization:
   Define delivery time, quality standards, inspection methods, and responsibilities.

6. Batch Production and Inspection:
   Perform batch-wise testing and provide inspection reports.

7. Delivery and Acceptance:
   The end user conducts sampling inspection according to the contract and confirms receipt.

RAL Color System

The RAL Classic system, established in Germany in 1927, is widely used worldwide and recognized as an international standard color system. The fan-deck contains all classic RAL colors, with five colors per page and a total of 210 colors.
Note: The difference between the K7 and K5 formats lies in the size of the color swatches (K7 contains five colors per page, while K5 presents one color per page).

HAOMEI Aluminum can manufacture custom aluminum sheets, coils, and strips according to the RAL composite color requirements. If you need color-coated aluminum coils, please feel free to contact us anytime.