3104 aluminum alloy is a high-performance material widely used in the manufacturing of bottle caps, especially in the food and beverage industry. Its unique alloy composition, mechanical properties, and processing characteristics make it the preferred choice for bottle cap materials.
Bottle cap aluminum 3104 Alloy Composition and Components
3104 aluminum alloy mainly consists of aluminum, manganese, magnesium, and small amounts of silicon, copper, and other elements.
- Aluminum (Al): Provides good strength, corrosion resistance, and formability.
- Manganese (Mn): Enhances the alloy's corrosion resistance, especially in humid environments and in contact with corrosive liquids such as carbonated beverages and mineral water.
- Magnesium (Mg): Increases the alloy's strength while improving its high-temperature resistance.
Bottle cap aluminum 3104 Performance Features
The application of 3104 aluminum alloy in bottle cap manufacturing is due to its excellent mechanical and chemical properties.
Good Formability
3104 aluminum alloy has excellent deep-drawing performance, making it suitable for manufacturing complex bottle cap shapes. It possesses outstanding formability, allowing for deep drawing, stretching, and other complex processing techniques without compromising strength and corrosion resistance, ensuring the precision and stability of the bottle cap.
Excellent Corrosion Resistance
3104 aluminum alloy contains a higher proportion of manganese, which gives it exceptional corrosion resistance in humid and wet environments. This is particularly important as bottle caps are in prolonged contact with moisture or other liquids, especially carbonated beverages, mineral water, and beer. 3104 aluminum alloy effectively prevents corrosion, rusting, or degradation, ensuring the quality and shelf life of the product inside the bottle.
High Temperature Resistance
3104 aluminum alloy has a certain level of high-temperature resistance, allowing it to withstand the high temperatures encountered during the bottling and canning processes. For bottled beverages, especially during high-temperature sterilization or hot filling, 3104 aluminum alloy maintains its structural stability without deformation or performance degradation due to temperature changes.
Lightweight Property
Aluminum alloys are inherently lightweight, and compared to other metal materials, 3104 aluminum alloy bottle caps are more lightweight. The lightweight design not only reduces packaging costs but also facilitates transportation and storage of products. Additionally, the lightweight bottle cap reduces the pressure on the container, enhances the sealing effect, and maintains a longer-lasting seal.
Good Surface Treatment Performance
3104 aluminum alloy has a smooth surface, making it easy to apply surface coatings and printing. This allows it to adapt to various bottle cap designs, offering a variety of colors, patterns, and decorative effects to meet market demands for aesthetics and brand recognition. Whether through color coating, heat transfer printing, or other surface treatment techniques, 3104 aluminum alloy ensures long-term stability of visual effects.
Bottle cap aluminum 3104 Specifications
| Alloy | Temper | Thickness | Width | Length | Coil | Strip | Earing | Diagonal |
| 3104 | H14, H16, H24, H26 | 0.15~0.25 mm(+/-0.005mm) | 500~1000 mm(+0.5mm, -0mm) | 500~1000 mm(+0.5mm, -0mm) | 500~1000 mm | 20~500 mm | 1 | ≤ 1mm |
Bottle cap aluminum 3104 Chemical Composition
| Alloy | Fe | Si | Cu | Mn | Mg | Cr | Zn | Ni | Ti | Other | Al | |
| Each | Total | |||||||||||
| 3104 | 0.7 | 0.6 | 0.3 | 0.3~0.8 | 0.2~0.8 | 0.2 | 0.4 | - | 0.1 | 0.05 | 0.15 | Remains |
Bottle cap aluminum 3104 Mechanical Property for Direct Casting
| Alloy | Temper | Thickness (mm) | U.T.S (Mpa) | Elongation (%) |
| 3104 | H14 | 0.15~0.25 | 150~200 | ≧1 |
Bottle cap aluminum 3104 Applications
- Carbonated beverage bottle caps: Due to the excellent corrosion resistance and sealing properties of 3104 aluminum alloy, it is highly suitable for use in carbonated beverage bottle caps, effectively preventing gas leakage.
- Mineral water bottle caps: The good moisture resistance and formability of 3104 aluminum alloy make it the preferred material for mineral water bottle caps, ensuring moisture sealing and preventing corrosion.
- Beer bottle caps: Its high-temperature resistance and corrosion resistance are particularly important in the production of beer bottles, ensuring that the bottle caps maintain good sealing performance in low-temperature and humid environments.
- Other beverage bottle caps: Whether for juice bottles or tea drinks, 3104 aluminum alloy can meet the needs of various bottled beverages, fulfilling strength and sealing requirements.
3104 aluminum alloy meets environmental requirements and has good recyclability. The recyclability of aluminum makes 3104 aluminum alloy an integral part of the circular economy, reducing reliance on natural resources and minimizing the negative environmental impact of the production process.
3104 aluminum alloy is typically supplied in coil form, processed through steps such as rolling and heat treatment, making it suitable for large-scale production. It is ideal for high-efficiency, automated bottle cap manufacturing processes, meeting the strict requirements for speed, precision, and quality on production lines.
- Surface smoothness: The surface of 3104 aluminum alloy is finely rolled, smooth, and uniform, providing an excellent base for coating and printing processes.
- Forming processing: It can be used in deep drawing, stretching, and other processes to produce various complex shapes of bottle caps, ensuring a good fit with the bottle opening and maintaining sealing performance.
With its excellent mechanical properties, corrosion resistance, formability, and surface treatment characteristics, 3104 aluminum alloy is widely used in the production of bottle caps in the food and beverage industry. Its lightweight, high-temperature resistance, and environmentally friendly properties make it an ideal base material for bottle cap manufacturing, providing superior performance for packaging products and meeting market demands for aesthetics, sealing, and durability.