1 / 1
Aluminum Coils are categorized into different types based on the alloy composition, each with distinct properties tailored to specific application scenarios. The most commonly used alloy series include:
| Alloy Series | Key Alloying Elements | Core Properties | Typical Applications |
|---|---|---|---|
| 1000 Series Pure Aluminum: 1050, 1060, 1070, 1100 | Aluminum ≥ 99.0% | Excellent corrosion resistance, high thermal/electrical conductivity, good ductility | Food packaging, heat exchangers, decorative materials |
| 3000 Series Al-Mn Alloy: 3003, 3004, 3104, 3105 | Manganese (1.0%–1.5%) | Balanced strength and formability, enhanced corrosion resistance vs pure aluminum | Kitchenware, automotive parts, construction panels |
| 5000 Series Al-Mg Alloy: 5005, 5052, 5083, 5182, 5754 | Magnesium (1.0%–5.0%) | High strength, superior corrosion resistance (especially seawater), weldable | Marine components, pressure vessels, architectural cladding |
| 8000 Series Al-Li Alloy: 8006, 8011, 8021 | Lithium, trace elements | Lightweight, high strength-to-weight ratio | Aerospace components, high-end automotive parts |
Mechanical properties of Aluminum Coil are significantly influenced by processing temper (heat treatment or cold working state). Taking 3003 alloy (the most widely used aluminum coil material) as an example, its key mechanical indicators are shown in the table below:
| Temper | Tensile Strength (σb, MPa) | Yield Strength (σ0.2, MPa) | Elongation (δ, %) | Application Note |
|---|---|---|---|---|
| O (Annealed) | 90 – 130 | ≤ 40 | ≥ 25 | Complex forming (deep drawing, stamping) |
| H14 (Semi-Hard) | 130 – 180 | 110 – 150 | ≥ 5 | Structural parts with moderate strength |
| H18 (Full Hard) | ≥ 180 | ≥ 160 | ≥ 3 | Load-bearing components without secondary forming |
The coil form allows continuous production processes such as slitting, stamping, and rolling, reducing material waste and improving production efficiency compared to discrete sheet materials.
With a density of approximately 2.7g/cm³ (about 1/3 of steel), it reduces the weight of end products, which is crucial for automotive lightweighting and architectural load reduction.
Aluminum naturally forms a dense oxide film on the surface, preventing further oxidation. Alloying elements (e.g., manganese, magnesium) can further enhance corrosion resistance for harsh environments.
Superior to most metals except copper, making it ideal for heat exchangers, radiators, and electrical conductors.
Compatible with anodizing, powder coating, electrophoresis, polishing, and printing, meeting both decorative and functional requirements (e.g., wear resistance, insulation).
| Industry | Specific Applications | Preferred Alloy Series |
|---|---|---|
| 🏗 Construction | Roofing, wall cladding, ceiling panels, decorative strips, window frames | 3000 Series, 5000 Series |
| 📦 Packaging | Food cans, beverage cans, foil containers, flexible packaging (aluminum-plastic composite) | 1000 Series, 3000 Series |
| 🚗 Automotive | Body panels, heat shields, radiators, interior decorative parts | 3000 Series, 5000 Series, 8000 Series |
| 💡 Electronics | Heat sinks for electronic devices, capacitor casings, cable sheaths | 1000 Series, 3000 Series |
| 🏭 Industrial Equipment | Heat exchanger fins, chemical storage tank liners, conveyor belts | 3000 Series, 5000 Series |
