Deep drawing aluminum sheets are widely used in the manufacturing of various bottle caps, particularly in the beverage, food, pharmaceutical, and personal care industries, thanks to their excellent formability, strength, corrosion resistance, and aesthetic appeal.

What is a Deep Drawing Aluminum Sheet?

A deep drawing aluminum sheet (such as 8011 or 3105 aluminum alloy) is a specially treated aluminum material designed for metal stamping and forming processes. After special annealing, its elongation can reach 30–40%, significantly higher than standard aluminum sheets. During high-speed stamping, it can withstand over 60% deep drawing deformation without cracking, ensuring accurate formation of complex cap structures such as tamper-evident rings, threads, and sealing flanges. It is commonly used to produce complex parts like bottle caps, can lids, and pharmaceutical closures.

Commonly Used Deep Drawing Aluminum Alloys:

• 8011-H14/H16/H24: Food-grade, ideal for beverage caps and pharmaceutical closures

• 3105, 3003 series: Enhanced strength, suitable for threaded and tamper-evident caps

• 5052, 5182 (for some cases): Higher structural strength, though with less elongation than 8-series alloys

Aluminum Bottle Cap Material Specifications:

Core Advantages of Aluminum Bottle Cap Material:

Lightweight

Aluminum’s low density makes the caps lightweight, which benefits overall product weight control, logistics cost, and consumer experience.

High Corrosion and Heat Resistance

Aluminum forms a dense oxide layer in air, offering excellent corrosion resistance. It withstands acidic beverages, alcohol, and high-temperature sterilization up to 135°C, ideal for pharmaceutical closures.

Superior Formability and Processability

Alloys like 8011, 3105, and 3003 feature outstanding ductility and are well-suited for deep drawing, spinning, folding, and other complex forming processes. They excel in producing tamper-evident caps, pull-off caps, threaded caps, etc.

Food-Grade Safety

Food-grade aluminum is non-toxic, odorless, and chemically stable, making it harmless to humans and compliant with food safety regulations.

Recyclability

Aluminum is highly recyclable, energy-efficient to reprocess, and environmentally friendly, aligning with sustainable packaging trends.

Why Choose Us?

Precision Tolerance: Width and thickness are strictly controlled per process sheets.

Premium Surface Quality: Free of cracks, bubbles, pinholes, embedded particles, or visible striping.

Consistent Quality Control: Surface quality is checked at least once every three coils during rolling, and every coil post-processing.

Accurate Shearing: No burrs, knife marks, or irregular edges during slitting.

About MC Aluminum

As a professional manufacturer of aluminum bottle cap materials, MC Aluminum supplies:

• 8011 H14/H16 cap sheets

• 3105 aluminum closure sheets

• 5052 aluminum sheets

• 5182 can end sheets

• 3104 pull-tab materials

• 1070 aluminum strips

Our materials feature excellent deep drawing performance, low earing rate, and retain strength after baking in the capping process, making them ideal for a wide range of closures including olive oil caps, wine bottle caps, beverage caps, and more.

MC Aluminum products are exported to over 40 countries and regions, trusted by global clients. We offer free samples, competitive prices, and reliable after-sales service.