The 8011 aluminum sheet coil is a widely used aluminum alloy material for manufacturing bottle caps, pharmaceutical closures, food packaging caps, and cosmetic lids. It belongs to the 8xxx series aluminum alloys, with iron (Fe) and silicon (Si) as the main alloying elements, giving 8011 excellent tensile strength, ductility, corrosion resistance, and sealing performance.

Compared with 1000 series pure aluminum, 8011 aluminum sheet coils exhibit superior mechanical properties and surface stability. Compared to 3003 or 3105 series, 8011 offers better airtightness and compressive strength. Compared with 8021 alloy, 8011 aluminum coil is more versatile and meets the needs of various types of cap production. Therefore, it is widely used in the production of caps such as PP caps, aluminum-plastic caps, ROPP caps, and tamper-evident caps.

Performance Features of 8011 Aluminum Sheet Coils

1. High Plasticity and Deep Drawing Capability:
8011 in H14, H16, or H18 temper has excellent ductility, making it ideal for deep drawing and stamping, perfectly adapting to complex cap shapes.

2. Good Strength:
Offers sufficient mechanical strength to prevent deformation or damage during transport and opening.

3. Corrosion Resistance:
Excellent oxidation and corrosion resistance ensure the contents are protected from environmental impact.

8011 Aluminum Sheet Coil Technical Specifications

Mechanical Properties

Heat Treatment Options for 8011 Aluminum Sheet Coil

8011 aluminum coils can be supplied in multiple temper conditions based on the final application, especially O temper. Common temper options include O, H22, H24, H26, H18, suitable for different cap manufacturing needs:

• O Temper: Soft, excellent ductility and formability, ideal for deep-drawn caps.

• H Temper: Hard, higher strength, suitable for caps requiring more rigidity.

Core Applications of 8011 Aluminum Alloy Cap Material

Pharmaceutical and Infusion Bottle Caps
8011 aluminum coil is widely used for antibiotic caps, infusion bottle caps, and vaccine bottle caps. Its excellent formability ensures precise and seamless crimped seals on glass bottles, effectively blocking bacteria and moisture and ensuring drug safety. Additionally, the material is non-toxic and easy to sterilize, meeting strict pharmaceutical standards.

Wine and Spirits Screw Caps
High-end wines and spirits increasingly adopt aluminum tamper-evident screw caps.

Producing ROPP caps requires precise threading and crimping at the bottle neck. 8011 aluminum coils ensure:

• Clear and accurate thread formation for easy opening and resealing.

• Tamper-evident rings break cleanly upon first opening, providing reliable anti-counterfeiting protection.

Easy-Open Caps and Yogurt Lids
Used for sealing food containers such as canned foods, yogurt cups, and pudding cups. 8011 aluminum foil or ultra-thin coils, after coating or lamination, provide reliable sealing while maintaining excellent easy-peel performance for consumers.

Why Choose 8011 Aluminum Sheet Coil for Cap Manufacturing?

1. High Airtightness: Effectively prevents liquid or gas leakage.

2. Excellent Processability: Suitable for stamping, deep drawing, and threading.

3. Flat Surface: Ideal for printing, hot stamping, and painting.

4. Corrosion and Oxidation Resistance: Maintains appearance even after long-term contact with liquids.

5. Safe and Eco-Friendly: Meets food and pharmaceutical contact standards, fully recyclable.

FAQ

Q1: Can 8011 aluminum coil be used for wine or spirit bottle caps?
A: Yes. 8011 in H14/H16 temper is commonly used for tamper-evident caps on wine, spirits, and beverage bottles, offering excellent stamping and sealing performance.

Q2: Can logos or colors be printed on the aluminum coil surface?
A: Yes. Surfaces can be coated, printed, anodized, or electrophoresed to meet customized design requirements.

Q3: How does 8011 aluminum coil differ from 3003 aluminum coil?
A: 8011 contains higher Fe and Si, providing stronger strength and better sealing. 3003 has superior ductility and is mainly used in cookware applications where sealing is not required.

Q4: Is it suitable for food contact?
A: Yes. 8011 aluminum sheet coil meets FDA, SGS, and RoHS standards, safe for food and pharmaceutical packaging.