5052 h26 painted coated aluminum coil
In the realm of coated aluminum products, the 5052 H26 painted coated aluminum coil stands out as a premium material, offering exceptional performance combined with aesthetic versatility. But beyond its shiny surface, this specialized coil is engineered for demanding applications requiring resilience, corrosion resistance, and superior formability.
5052 Aluminum Alloy: The Backbone of Performance
5052 aluminum belongs to the 5XXX series, known primarily for their excellent corrosion resistance and medium strength. The specific alloy composition features magnesium as the primary alloying element, enhancing its resistance to marine and industrial environments.
Chemical Composition of 5052 Alloy:
| Element | Percentage |
|---|---|
| Aluminum (Al) | Balance |
| Magnesium (Mg) | 2.2 – 2.8% |
| Chromium (Cr) | 0.15 – 0.35% |
| Copper (Cu) | ≤ 0.1% |
| Iron (Fe) | ≤ 0.4% |
| Manganese (Mn) | ≤ 0.1% |
| Silicon (Si) | ≤ 0.25% |
| Zinc (Zn) | ≤ 0.1% |
The magnesium content notably enhances the material’s strength and its resistance to corrosion, including protection under saltwater conditions. Chromium aids in preventing grain growth during processing and adds to its anti-corrosive quality.
Temper Designation: Decoding H26 Condition
The H26 temper indicates strain-hardened and partially annealed material. It means the aluminum coil is cold worked and then subjected to controlled heating to achieve a stable temper — balancing improved strength and favorable ductility.
In technical terms:
- H-type Temper: Non-heat treatable aluminum alloy derived from cold working processes.
- H26 temper: Medium strength — about 86% of full hard (H28) strength, allowing moderate formability.
This temper maintains suitable rigidity required in structural panels while retaining sufficient material stiffness for bending and drawing operations without warping or cracking.
What Is a Painted Coated Aluminum Coil?
The industry receives 5052 in coil form, which is first surface treated for increased coating adhesion and corrosion resistance, and then painted with a high-performance organic coating (often polyester, PVDF, or polyurethane systems). The painting process:
- Provides excellent weather and UV resistance
- Adds a protective barrier that preserves both coating and metal integrity from environmental stresses
- Enhances aesthetics with customizable finishes and textures
The ultimate result is a multi-functional coated product combining mechanical endurance with decorative appeal suitable for diverse industrial and architectural needs.
Performance Parameters and Implementation Standards
| Parameter | Typical Value | Standard/Condition |
|---|---|---|
| Thickness | Typically 0.2mm to 3.0mm | ASTM BIAS-47, EN 485-2 |
| Width | Up to 1600mm | Industry standard coil widths |
| Yield Strength | ~160 MPa (H26 temper) | ASTM B209 |
| Tensile Strength | 210 – 270 MPa | ASTM B209 |
| Elongation (%) | 10 – 15 | ASTM B209 |
| Density | 2.68 g/cm³ | ASTM B209 |
| Corrosion Resistance | Excellent | ASTM G85 (salt spray test) |
| Surface Finish | Painted (PVDF or polyester) | AAMA 2605 / Qualicoat standards |
Functional Benefits
Superior Corrosion Resistance: The 5052’s inherent alloy composition combined with enriching painting processes greatly mitigates corrosion risks. This makes it an excellent candidate for marine docks, coastal roofing, and chemical processing plants.
Balance of Strength and Flexibility: With the H26 temper setting, the painted coil exhibits good bendability without sacrificing strength – a vital feature for architectural panels and automotive outer body parts.
Lightweight Durability: Weighing roughly one-third of steel but maintaining considerable mechanical strength allows lighter structural frames and eliminates additional structural support needs.
Enhanced Surface Treatment: RGB anodizing is typically replaced here by painted coatings providing supreme UV protection and color retention for decades, adding an attractive, enduring finish.
Typical Applications of 5052 H26 Painted Coated Aluminum Coil
- Exterior Wall Panels and Cladding: Its corrosion resistance and customizable colors enrich modern building envelopes, especially in harsh or humid climates.
- Roofing Sheets and Soffits: The painted coil’s long-lasting finish withstands weathering, making it an ideal roofing shell.
- Transportation Vehicles: The automotive, aerospace, marine, and recreational vehicle industries utilize these filmy-coated coils extensively where lightweight and external climatic exposure combines.
- Electrical Enclosures and Architectonic Fixtures: The product combines strength and aesthetics in paneling for sensitive electronic housings.
- Chemical Equipment Siding: Resistivity to corrosive elements keeps structure integrity secure even when exposed to acidic atmospheres.
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