8011 vs 1235 vs 8079 Aluminum Foil

Aluminum foil is essential in daily life and industrial production, with 8011, 1235, and 8079 being the most widely used grades. Their differences lie in chemical composition, thickness, and uses, as follows.

1. Chemical Composition

Their unique properties come from distinct chemical compositions, which determine strength, flexibility, and corrosion resistance.

8011 (8-series): Aluminium 8011 composition is mainly aluminum, with Si (0.50-0.9%), Fe (0.6-1.0%), and minimal impurities. It has balanced strength and flexibility, suitable for various packaging and industrial uses.

1235 (1-series): High purity (≥99.35%), with Si+Fe ≤0.65% and other impurities ≤0.05% each. It boasts excellent flexibility, thermal conductivity, and corrosion resistance, ideal for high-surface-quality applications.

8079 (8-series): Similar to 8011 but with higher Fe (0.7-1.3%) and lower Si (0.3-0.5%). Its higher Fe content enhances puncture resistance and barrier performance for high-demand packaging.

2. Main Thickness

Thickness varies by application: thinner for flexible packaging, thicker for industrial use.

8011 aluminium foil: 0.006-0.2 mm (versatile "all-rounder"). Popular thicknesses: 0.006-0.009 mm (chocolate/candy), 0.015-0.025 mm (household baking), 0.03-0.05 mm (milk powder/pharmaceutical), 0.1-0.15 mm (air conditioning fins).

1235 aluminum foil: 0.005-0.15 mm (thinner due to high flexibility). Popular: 0.006-0.009 mm (high-end food), 0.018-0.035 mm (household/capacitors); can be ultra-thin (0.002-0.0045 mm) for electrolytic capacitors.

8079 aluminum foil roll: 0.006-0.15 mm (narrower range for high performance). Popular: 0.006-0.008 mm (soft packaging), 0.012-0.026 mm (pharmaceuticals), 0.03-0.04 mm (lithium battery films).

3. Popular Uses

8011 (most widely used, cost-effective): Food packaging (60% of usage, e.g., milk powder lids, instant noodle lids), pharmaceutical packaging (PTP blister packs), industrial uses (air conditioning fins, cable shielding), and daily necessities (aluminum lunch boxes).

1235 (high purity): High-end food packaging (chocolate), light-duty household foil, electronic applications (capacitor foil), and small heat exchangers.

8079 (high barrier/puncture resistance): High-end pharmaceutical packaging, sensitive food packaging (frozen foods), lithium battery aluminum plastic films, and high-demand heat-sealing films.

How to Choose the Right Grade

To sum up, 8011, 1235, and 8079 aluminum foils each have their own strengths: Choose 8011 if you need a versatile, cost-effective option for general food packaging, household use, or basic industrial applications—it's the safest choice for most common needs.

Choose 1235 if you prioritize high purity, flexibility, and surface quality, such as for high-end food wrapping, capacitor foil, or light-duty household use. Choose 8079 if you require superior barrier performance and puncture resistance, such as for pharmaceutical packaging, sensitive food packaging, or lithium battery aluminum plastic films.