8011 and 8079 aluminum alloys both belong to the 8xxx series and are commonly used in foil applications due to their excellent formability and barrier properties. Although they share similarities, they differ significantly in composition and mechanical properties, making them suitable for specific applications.
- 8011 Advantage: Higher ductility (elongation up to 28%), allowing for deep drawing and forming without cracking. Ideal for embossed foil and complex shapes.
- 8079 Advantage: Higher tensile/yield strength, offering better puncture resistance for pharmaceutical blister packaging.
8079 contains less silicon but more iron, which enhances its barrier properties against moisture and gases.
8011 Aluminum vs. 8079 Aluminum Summary of Key Differences
| Feature | 8011 Aluminum | 8079 Aluminum |
| Strength | Higher | Moderate |
| Formability | Good | Excellent |
| Barrier Properties | Good | Superior |
| Ductility | Excellent (≤28% elongation) | Limited (2.2% elongation) |
| Common Applications | Household foil, bottle caps | Flexible packaging, pharmaceutical foils |
For optimal performance, prioritize the formability of 8011 and the barrier strength of 8079. Both alloys comply with strict food/pharmaceutical safety standards and perform excellently in different fields.
Core Chemical Composition of 8011 Aluminum vs. 8079 Aluminum
8079 has higher iron content and lower silicon content, which enhances mechanical properties.
| Element | 8011 Aluminum | 8079 Aluminum |
| Silicon (Si) | 0.50%～0.90% | 0.05%～0.30% |
| Iron (Fe) | 0.60%～1.0% | 0.7%～1.3% (significantly higher) |
| Copper (Cu) | ≤0.10% | ≤0.05% |
| Others | Zinc ≤0.10%, Titanium ≤0.08% | Zinc ≤0.10% |
8011 Aluminum vs. 8079 Aluminum Physical and Mechanical Properties
Common advantages: moisture-proof, light-blocking, oxygen barrier, non-toxic. Suitable for direct contact packaging of food and pharmaceuticals.
| Property | 8011 Aluminum | 8079 Aluminum |
| Strength | Medium | Higher (Increased strength due to higher iron content) |
| Ductility | Good | Better (Outstanding elongation and rolling performance) |
| Surface Requirements | Clean and smooth, no pinholes, heavy metals ≤ 0.25 ppm | Thorough degreasing, fewer holes, Dayne value ≥ 32 (for battery applications) |
8011 Aluminum vs. 8079 Aluminum Thermal and Electrical Properties
| Property | 8011 Aluminum | 8079 Aluminum |
| Thermal Conductivity | 210 W/m·K | 230 W/m·K |
| Electrical Conductivity | 56% IACS | 58% IACS |
| Melting Range | 630°C (Solidus) – 650°C (Liquidus) | 640°C (Solidus) – 650°C (Liquidus) |
8011 Aluminum vs. 8079 Aluminum Application Scenarios
8079 is used for lithium batteries: improves battery consistency, reduces internal resistance, and extends lifespan. 8011 is more widely used in everyday packaging (such as food trays and bottle caps).
8011 Aluminum: Due to its good strength and corrosion resistance, it is widely used in household aluminum foil, food and pharmaceutical packaging, bottle caps, and heat exchangers. 8079 Aluminum: Suitable for applications requiring excellent formability and barrier properties, such as flexible packaging, pharmaceutical blister packaging, and high-quality laminates.
| Field | 8011 Aluminum | 8079 Aluminum |
| Pharmaceutical Packaging | Capsule/tablet blister packaging | Tropical-type blister packaging (Aluminum-plastic-aluminum structure) |
| Food Packaging | Yogurt seals (milk cap foil) | High-temperature cooked food bags |
| Industrial Field | Tape foil, cable tape | Lithium battery pouch aluminum-plastic film (core application) |
Applications of 8011 Aluminum
- Food packaging: Dominates due to its excellent formability, corrosion resistance, and compliance with FDA requirements.
- Pharmaceuticals: Blister packaging requiring deep-draw cavities.
- Industrial: Insulation, electronic shielding, building moisture barriers.
- Household aluminum foil: Soft (O temper), used for packaging and storage.
Applications of 8079 Aluminum
- High-barrier packaging: Outstanding moisture and oxygen resistance, suitable for sensitive pharmaceuticals and dry foods.
- Beer labels and bottle caps: High strength to prevent deformation during sealing.
- Premium packaging: High-gloss surface (thickness up to 45 microns), elegant appearance.
8011 Aluminum vs. 8079 Aluminum Product Specifications and Processing
| Parameter | 8011 Aluminum | 8079 Aluminum |
| Thickness Range | 0.018–0.5 mm | 0.018–0.2 mm |
| Common Tempers | O/H14/H16/H18, etc. | O/H22/H24 (focus on flexibility) |
| Width Range | 100–1600 mm | 100–1650 mm |
8011 Aluminum vs. 8079 Aluminum Price and Selection Recommendations
Price difference: Due to differences in alloy composition and processing costs, 8079 is generally more expensive than 8011.
Selection principles:
| Application Requirements | Recommended Aluminum Foil | Explanation |
| High ductility needed, battery packaging | 8079 | 8079 aluminum foil offers excellent ductility and puncture resistance, suitable for high-demand packaging such as pouch batteries and pharmaceutical blister packs. |
| General packaging, cost-sensitive | 8011 | 8011 aluminum foil is cost-effective and widely used for general food and pharmaceutical packaging, suitable for price-sensitive applications. |
8011 Aluminum vs. 8079 Aluminum Practical Selection Guide
Choose 8011 in the following cases:
- Ductility and formability are critical (e.g., embossed foil, deep-draw containers).
- Economic and general-purpose aluminum foil is needed (e.g., household rolls, food trays).
Choose 8079 in the following cases:
- Barrier integrity is crucial (e.g., moisture-sensitive drugs, long shelf-life foods).
- Higher tensile strength is required (e.g., industrial seals, bottle caps).
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