8011 Aluminum Foil VS 8021 Aluminum Foil
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2020-03-11 10:54
In aluminum foil materials, 8011 aluminum foil and 8021 aluminum foil are commonly used alloys, although both belong to the 8-series aluminum alloy, but there are some differences in the composition of the two, so there are certain differences in performance and use. About these differences, Henan Mingtai Aluminum made a summary, when you buy, can be used as a reference.
Chemical composition of 8011 aluminum foil (mass fraction)/%
Grade
Si
Fe
Cu
Mn
Mg
Cr
Zn
Ti
Others
Al
8011
0.5~0.9
0.6~1.0
≤0.10
≤0.20
≤0.05
0.05
≤0.10
≤0.08
0.05
Remain
Chemical composition of 8021 aluminum foil (mass fraction)/%
|
Grade |
Si |
Fe |
Cu |
Mn |
Mg |
Cr |
Zn |
Ti |
Others |
Al |
|
8021 |
≤0.15 |
1.2~1.7 |
≤0.50 |
-- | -- | -- | -- | -- |
0.05 |
Remain |
It can be seen that: the 8011 aluminum foil contains Mn and Mg elements, and the 8021 aluminum foil does not contain these two elements, so the strength and corrosion resistance of 8011 aluminum foil is higher than that of 8021 aluminum foil.
2.As Cap Material, the Application Field of 8011 Aluminum Foil and 8021 Aluminum Foil is Different
The 8021 aluminum foil is suitable for bottle cap material that requires better deep-blanking performance, while the 8011 aluminum foil is often used for yogurt cover and other places.
3.The Same as the Medicinal Aluminum Foil, Their Purpose are Different
The strength of 8011 aluminum foil is high, but the elongation and puncture resistance are lower than that of 8021 aluminum foil in the same temper. In drug packaging, the aluminum foil coating on the back of capsule plate is mostly 8021 aluminum foil, while blister and tropical medicine packaging require more tightness and elongation of the material, so 8021 aluminum foil and 8079 aluminum foil are mostly used.4.The Range and Price are Different
8011 aluminum foil is more widely used, can be used in medicine packaging, food packaging, meal box material, tape foil, cable foil, bottle cap material and many other fields, the price is relatively favorable. 8021 aluminum foil is mainly used in the relatively high requirements of lithium battery soft package aluminum plastic film and blister medicine packaging, the price is more expensive.
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