Aluminium Coil
Classification by Alloy Series
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,1100,1050,1060,1070) |
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,5005,5052,5754,5182,5083) |
Magnesium (1.0%-5.0%) |
High strength, superior corrosion resistance (especially seawater), weldable |
Marine components, pressure vessels, architectural cladding |
|
8000 Series (Al-Li Alloy,8011,8006,8021) |
Lithium, trace elements |
Lightweight, high strength-to-weight ratio |
Aerospace components, high-end automotive parts |
Our Specifications
Aluminum Coil specifications are defined by thickness, width, coil weight, and inner diameter, with a wide range of options to meet industrial production needs. The following are typical specification ranges:
- Thickness: 0.2mm - 10.0mm (thinner coils ≤ 0.2mm are often called "foil coils")
- Width: 800mm - 2500mm (custom widths available via slitting)
- Coil Weight: 500kg - 5000kg (varies by thickness and width to facilitate handling)
- Inner Diameter: 505mm usual(standard sizes for compatibility with rolling and processing equipment)
Mechanical Properties (Typical Alloy: 3003 Aluminum Coil)
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 |
Core Characteristics
- Efficient Processing: 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.
- Lightweight Advantage: 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.
- Superior Corrosion Resistance: 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.
- Excellent Thermal & Electrical Conductivity: Superior to most metals except copper, making it ideal for heat exchangers, radiators, and electrical conductors.
- Strong Surface Treatment Adaptability: Compatible with anodizing, powder coating, electrophoresis, polishing, and printing, meeting both decorative and functional requirements (e.g., wear resistance, insulation).
Key Application Fields
|
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 |
Quality Control & Storage Notes
- Quality Control Indicators: Thickness tolerance (±0.02mm for precision coils), surface quality (no scratches, oil stains, or oxidation spots), flatness (to avoid warping during processing), and mechanical property consistency (batch sampling inspection).
- Storage Recommendations: Store in a dry, well-ventilated warehouse to prevent moisture-induced oxidation; place coils on dedicated supports to avoid deformation; avoid direct contact with corrosive substances; cover with waterproof and dustproof materials if stored outdoors temporarily.
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