2026-08-02
Imagine building exteriors that maintain their vibrant colors under scorching sunlight, or home appliances that combine superior performance with exquisite finishes. These achievements are made possible by an unassuming yet technologically advanced material – 3003 pre-painted aluminum coil. This innovative product merges the exceptional workability and corrosion resistance of 3003 aluminum alloy with factory-applied organic coatings that deliver lasting aesthetics and protection.
As a standout in the 3xxx series of non-heat-treatable aluminum alloys, 3003 derives its core advantages from its manganese (Mn)-based composition. This carefully balanced chemical formula provides excellent workability, outstanding corrosion resistance, and competitive cost-effectiveness.
| Element | Content Range (wt%) | Primary Function |
|---|---|---|
| Aluminum (Al) | ≥96.8% (matrix) | Provides corrosion resistance and workability |
| Manganese (Mn) | 1.0–1.5 | Enhances strength, refines grain structure |
| Copper (Cu) | 0.05–0.20 | Modestly increases strength |
| Iron (Fe) | ≤0.70 | Impurity control affecting surface finish |
3003 pre-painted aluminum coils are available in various tempers to meet different application requirements:
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| O (Annealed) | 110–145 | 40–125 | 20–30 |
| H14 | 140–180 | 115–165 | 8–16 |
| H18 | 185–240 | 170–220 | 3–8 |
Polyester coatings offer excellent value for money, typically used in industrial buildings and interior applications. Modern high-durability polyester formulations can extend color retention to 10-15 years.
With its ultra-strong carbon-fluorine bonds, PVDF provides exceptional UV resistance and chemical stability, making it ideal for landmark buildings and coastal applications with warranties often exceeding 20 years.
| Industry | Typical Uses |
|---|---|
| Architecture | Curtain walls, roofing, decorative elements |
| Transportation | Vehicle panels, railcar components |
| Appliances | Refrigerator doors, washer panels |
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