8011 aluminum foil and 8021 aluminum foil are both popular types of aluminum foils used for various applications, but they have some differences in their chemical composition and properties. Here’s a comparison based on key factors:

Alloy Composition:

8011 Aluminum Foil: It is a typical alloy of the 8xxx series and contains aluminum as its primary element with small amounts of other elements like iron, Te mau mana'o tauturu no te, e te veo.
8021 Aluminum Foil: It also belongs to the 8xxx series and is an alloy that consists of aluminum as the primary element, with additional elements such as iron, Te mau mana'o tauturu no te, and other trace elements.

Faaohiparaa:

8011 Aluminum Foil: This type of foil is commonly used in various packaging applications, such as for food packaging, Te mau mana'o tauturu no te haapiiraa, and household foil.
8021 Aluminum Foil: It is specifically used for blister packaging in the pharmaceutical industry due to its excellent barrier properties against moisture, oxygen, and light.

Mechanical Properties:

8011 Aluminum Foil: It has good mechanical properties, making it suitable for general-purpose packaging requirements.
8021 Aluminum Foil: This foil has higher tensile strength and elongation compared to 8011 foil, which is crucial for blister packaging that requires easy formation and sealing.

Barrier Properties:

8011 Aluminum Foil: It provides a moderate barrier to moisture, light, e te mau mǎhu, making it suitable for standard packaging needs.
8021 Aluminum Foil: Due to its enhanced barrier properties, it is an excellent choice for pharmaceutical blister packaging, protecting drugs from external elements.

Softness:

8011 Aluminum Foil: It has a relatively softer structure, making it easy to bend and fold for various packaging applications.
8021 Aluminum Foil: This foil is slightly harder than 8011, but it remains pliable enough to be formed into blister packs without compromising the barrier properties.

Cost:

8011 Aluminum Foil: It is generally more cost-effective compared to 8021 foil, making it preferable for cost-sensitive applications like household foil.
8021 Aluminum Foil: Being specialized for pharmaceutical blister packaging, it may be more expensive than 8011 foil due to its unique properties.