The most commonly used aluminum alloys for beer aluminum sealing caps are 3105, 5052, and 8011. These materials offer excellent corrosion resistance, formability, and sealing performance.

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The 3105 H14 / H16 bottle cap material has a flat shape, no roller marks, and no oil spots, which facilitates subsequent printing and makes the pattern clear and distinguishable.

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3105 H14 is suitable for deep-drawing complex bottle caps, while H16 is more suitable for high-strength applications.

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