3000 series aluminum coil (primarily alloy 3003) dominates architectural projects due to its optimal balance of formability, corrosion resistance, and cost efficiency. This article explores technical specifications and real-world performance data for engineers and specifiers.
Key Properties & Advantages
| Property | Value Range | Industry Standard |
|---|---|---|
| Density | 2.73 g/cm³ | ASTM B209 |
| Tensile Strength (H14) | 150-200 MPa | ASTM E8/E8M |
| Elongation (H24) | 8-15% | ASTM E8/E8M |
| Melting Point | 643-654°C | ASM Handbook |
| Thermal Conductivity | 163 W/m·K | ASTM E1461 |
Source: Aluminum Association Standards
Why 3003 Alloy Coil Excels in Construction:
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Weathering Resistance
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Salt Spray Test Results (3000 vs. Carbon Steel):
Material Time to Red Rust 3003-H14 Al 1,500+ hours Carbon Steel (Zn) 120 hours ASTM B117 testing protocol
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Formability Metrics
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Minimum Bend Radius (90° cold bend):
Thickness (mm) Radius (T = thickness) 0.5-1.0 0T (flat) 1.2-2.0 0.5T 2.5-3.0 1.0T
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Architectural Applications Breakdown
| Application | Recommended Thickness | Surface Finish |
|---|---|---|
| Roofing Sheets | 0.7-1.2 mm | PVDF/Polyester coated |
| Wall Cladding | 0.8-1.5 mm | Anodized/Painted |
| Gutters & Downspouts | 1.0-1.8 mm | Mill finish |
Sustainability Data
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Recycling Energy Savings:
Material Energy vs. Virgin Production 3003 Al Coil 95% reduction Source: International Aluminum Institute
Conclusion
With proven corrosion resistance (>40-year service life in ISO 9223 C3 environments), formability, and eco-efficiency, 3000 series coils deliver unmatched ROI for sustainable architecture.