The Differences Between 8021 Aluminum Foil and 8011 Aluminum Foil

Table of Contents

8021 aluminum foil and 8011 aluminum foil are two common types of aluminum foil that play important roles in different application areas. Although they may look similar in appearance, there are some noticeable differences in their properties and uses. Let’s delve into the distinctions between 8021 aluminum foil and 8011 aluminum foil.

Material Composition

8021 Aluminum Foil: 8021 aluminum foil is primarily composed of aluminum as the base material, with the addition of other alloying elements such as copper, iron, silicon, etc. These alloying elements enhance the mechanical and processing properties of 8021 aluminum foil, making it more suitable for specific applications.

8011 Aluminum Foil: Similarly, 8011 aluminum foil also consists mainly of aluminum, but its alloy composition is relatively simple, typically containing small amounts of iron and silicon. Compared to 8021 aluminum foil, 8011 aluminum foil has lower alloy content and is more suitable for general packaging and food preservation applications.

Strength and Toughness

8021 Aluminum Foil: 8021 aluminum foil typically exhibits higher strength and toughness, making it suitable for applications requiring high strength and durability, such as pharmaceutical packaging, battery casings, and food packaging.

8011 Aluminum Foil: In contrast, 8011 aluminum foil has relatively lower strength and toughness, but its softness and malleability are excellent, making it more suitable for general household food packaging, baking trays, oven liners, etc.

Corrosion Resistance

8021 Aluminum Foil: Due to the addition of alloying elements, 8021 aluminum foil demonstrates higher corrosion resistance, enabling it to maintain stability in humid or corrosive environments. Therefore, it is suitable for long-term preservation and moisture-proof food packaging.

8011 Aluminum Foil: While 8011 aluminum foil also possesses some corrosion resistance, it may not be as robust as 8021 aluminum foil in this aspect. It is more suitable for disposable food packaging and short-term preservation applications.

Application Fields

8021 Aluminum Foil: 8021 aluminum foil is commonly used in pharmaceutical packaging, battery casings, food packaging requiring high performance (such as chocolate packaging, tablet packaging), and high-demand industrial materials.

8011 Aluminum Foil: On the other hand, 8011 aluminum foil is mainly used in household food packaging (such as household baking, takeaway food packaging), baking trays, oven liners, and other everyday life applications.


In conclusion, while 8021 aluminum foil and 8011 aluminum foil may share some similarities, they each have unique advantages and applications. Choosing the appropriate aluminum foil material depends on specific application requirements to ensure optimal performance and effectiveness.

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