Aluminum Can Material

Aluminum Can Material Technical Specification

Material Properties

Aluminum alloys possess unique characteristics including:

• Low density with high specific strength

• Excellent electrical and thermal conductivity

• Superior corrosion resistance

• Widely used in food packaging, maritime, aviation, automotive, petrochemical, telecommunications, nuclear energy, and space technology sectors.

Aluminum alloy thin-gauge cans produced through this process feature:

• Dense microstructure with no shrinkage porosity, cracks, or other defects

• Optimized casting processes via numerical simulation of filling and solidification phases to minimize casting flaws.

Product Advantages

Modern requirements for beer, beverage, and food cans include:

1. Protection against external environmental factors (light, gases, mechanical damage)

2. Non-damage to packaged contents and vice versa

3. Availability in standardized specifications

4. Attractive design for consumer appeal

5. Convenient food access for consumers

6. Compatibility with standard filling/packing equipment

7. Cost-effectiveness

Applications

Aluminum can materials meet all specified requirements:

• Lightproof and impermeable to air, water vapor, and other gases

• Resistance to all common food preservation treatments (freezing, dehydration, thermal sterilization)

• Neutral taste and inhibition of bacterial growth

• Corrosion resistance against both dry and near-neutral pH wet packaging materials (enhanced with coatings)

• Excellent formability for diverse container shapes and sizes

• Seamless construction (no side/body welds), eliminating potential weak points

• Enhanced creep resistance at side seams for pressurized beverage containers

• Natural silver-white finish compatible with spraying and coloring

• Easy-open lids for quick consumer access (tear-off lids for solids, removable caps for liquids)

• Comparable rigidity to tinplate cans while allowing high-speed filling on conventional lines (with modifications to reduce magnetic dependence)

• Lightweight design (bottom seam elimination reduces weight)

• Wall thickness reduction to 0.114–0.152mm for beverage cans

• Gas reinforcement mechanism:

• Carbonated beverages utilize internal gas pressure to strengthen sidewall resistance

• Non-carbonated drinks (juices, water) employ liquid nitrogen injection (volume expansion ×700 upon vaporization) to enhance mechanical strength