The AA8011 H14 Aluminium Coil is a widely utilized aluminum alloy tailored for the manufacturing of polypropylene (PP) caps used primarily in the packaging industry. Known for its excellent formability, corrosion resistance, and surface quality, AA8011 caters to the stringent demands of food and beverage closures.
Chemical Composition of AA8011 Alloy
| Element | Composition (wt. %) |
|---|---|
| Aluminum (Al) | Balance |
| Silicon (Si) | 0.20 - 0.60 |
| Iron (Fe) | 0.6 - 1.2 |
| Copper (Cu) | Max 0.03 |
| Manganese (Mn) | Max 0.50 |
| Magnesium (Mg) | Max 0.10 |
| Zinc (Zn) | Max 0.10 |
| Others (Each) | Max 0.05 |
| Others (Total) | Max 0.15 |
Mechanical and Physical Properties
| Property | Value |
|---|---|
| Temper | H14 (Strain Hardened, Non-Heat Treatable) |
| Tensile Strength | 120 – 160 MPa |
| Yield Strength | ≥ 85 MPa |
| Elongation at Break | 1 – 3% |
| Hardness (Brinell) | 45 – 65 HB |
| Density | 2.70 g/cm³ |
| Thermal Conductivity | 220 – 240 W/mK |
| Electrical Conductivity | ≈ 41% IACS |
Features of AA8011 H14 Aluminium Coils
1. Excellent Formability and Drawability
AA8011 H14 aluminium coils exhibit superior formability due to their cold-rolled, strain-hardened state. This makes them ideal for deep drawing and drawing-edge applications like lid and cap manufacturing where precision and integrity of form are paramount.
2. Optimal Surface Finish and Cleanliness
The aluminum coil surface has minimal impurities and oxide inclusions, ensuring smooth and uniform gauge thickness. This translates into quality caps with consistent barrier properties upon sealing to PP containers.
3. Good Corrosion Resistance
Due to its alloying composition, AA8011 resists atmospheric corrosion and protects the beverage or food content inside PP containers, ensuring product safety and longevity.
4. Compatibility with Plastic Liners
AA8011’s chemical inertness allows it to easily integrate multiple types of plastic coatings or sealing liners between the coil material and polypropylene closures, preventing metallic taste or contamination.
5. Thickness and Width Versatility
Available typically in thicknesses ranging from 0.15 mm to 0.30 mm and widths from 100 mm up to 1500 mm, these coils provide manufacturing flexibility based on customer-size requirements for PP caps.
Applications in PP Caps Manufacturing
1. Food and Beverage Industry
Extensively used for closure applications in packaging juice bottles, dairy cartons, and non-alcoholic beverages due to its food-grade compatibility and hygienic surface constraints.
2. Pharmaceutical Caps
Its precise mechanical properties enable the fabrication of tamper-evident caps, vital for pharmaceutical container safety and ensuring airtight seals.
3. Household Chemicals
The coil material supports PP closures for detergents, cleaning agents, and chemical containers where durability and sealing properties avoid leakage and product contamination.
Why Choose AA8011 H14 Aluminium Coil for PP Caps?
| Benefit | Explanation |
|---|---|
| Regulatory Compliance | Meets relevant food-grade standards (FDA, EU) |
| Industrial Compatibility | Easily integrates on press lines designed for thin aluminum coils |
| Economic Efficiency | Cost-effective alloy involving abundant raw materials |
| Lightweight Packaging | Contributes to reducing package weight and shipping cost--- |
