MC Aluminum's 3105 aluminum coil is gaining wide application in the bottle cap manufacturing sector thanks to its excellent formability, corrosion resistance, and printability. It is being rapidly adopted in industries such as wine, beverages, pharmaceuticals, and edible oil packaging.

Perfect Match for the Wine Industry’s Demands

For wine bottle cap manufacturing, 3105 aluminum alloy provides the exceptional deep drawing performance required to accommodate various bottle neck designs. Moreover, considering the wine cap's exposure to both internal contents and external environmental conditions, the corrosion resistance of 3105 aluminum becomes a particularly important advantage.

Material Overview: Why Choose 3105 Aluminum Coil for Bottle Caps?

3105 aluminum belongs to the aluminum-manganese series, with a manganese content ranging from 0.3% to 0.8%, offering excellent anti-rust properties and moderate strength. It is ideal for complex processes such as deep drawing, spinning, and stamping. For bottle cap production, 3105 coils are typically supplied in annealed (O-temper), H14, or H16 tempers to meet specific processing needs.

Why 3105 Aluminum is an Ideal Bottle Cap Material

1. Outstanding Workability:
3105 H14/H16 aluminum alloy features excellent deep-drawing capabilities and low earing rate, reducing scrap and improving production efficiency. Its high strength meets the structural demands of various cap types, while its excellent ductility ensures the material won’t crack or deform during forming.

2. Superior Corrosion Resistance:
The manganese content in 3105 provides enhanced corrosion resistance, ensuring long-term protection and appearance of the cap, especially in food and beverage applications.

3. Moderate Strength:
Stronger than 3003 aluminum, 3105 offers enough mechanical strength to withstand the forces involved in sealing and opening the bottle while maintaining structural integrity.

4. Aesthetic Versatility:
3105 aluminum coils are well-suited for coating, painting, and printing, allowing vibrant visual presentation and brand identity through a variety of finishes and colors.

5. Lightweight & Recyclable:
Lightweight properties help reduce transportation costs. Being 100% recyclable, 3105 aluminum aligns with global sustainability goals.

Typical Applications of 3105 Aluminum for Closures

Alcoholic Beverage Closures: Vodka caps, 30x60mm wine caps, whiskey closures

Edible Oil Bottle Caps: 31.5x24mm aluminum caps

Pharmaceutical Bottle Seals: High sealing integrity and safety

Functional & Premium Beverage Caps: Printed, branded, or anti-counterfeit aluminum closures

Surface Treatment Technologies for 3105 Aluminum Closures

Chromate / Non-chromate Chemical Conversion Coating: Improves corrosion resistance and adhesion

DOS (Dioctyl Sebacate) Coating: Enhances food safety compliance

Digital Laser Coding: Adds anti-counterfeit security and enables consumer engagement

MC Aluminum is a professional aluminum manufacturer specializing in producing high-quality bottle cap materials from 1060, 3104, 3105, 5052, and 8011 aluminum alloys. Our products feature smooth surface finish, clean oil removal, no visible marks or black lines, and burr-free edges.

We supply products to multiple international markets, offer sample services, competitive pricing, and welcome clients to visit our factory for on-site inspection and cooperation.