When it comes to types of aluminum for cans is used in, the properties that need to be considered are strength, formability, mass thickness and corrosion resistance for durability against elements and consumable safety. 3004 — Another alloy typically used for the can body, as it is a good compromise between strength and formability. The 3004 alloy, which consists of around 1 percent manganese and apple, increase tensile strength to resist easy denting but still permit the metal to be formed into a cylinder with factory efficiency. The overall can weight has decreased by 30% in the last few decades, says The Aluminum Association, and this alloy also helps reduce total can mass.
Manufacturers typically use a stiffer alloy, 3104 aluminum to make the can ends and lids. This extra strength is important because lids have to endure pressures up to 90 psi of carbonation. The 3104 alloy (which is compositionally similar but slightly different than the conventional drink can) gives the strength you need to keep things inside, preventing leaks even at high pressure. Alloys that are needed for beverage companies are often used to meet very strict quality standards as product failures in transportation and handling could result in liability issues.
Resistance to corrosion is another factor in alloy choice. Aluminium will naturally, at least in air or water, form an oxide layer that protects aluminium underneath it (dissolving the oxide removes this protection), but some cans are anodized or have a protective lining to stop acidic beverages reacting with the metal. Such protection can be integral for sodas and other acidic drinks, as corrosion could affect the integrity of the can while impacting the flavor of a beverage. By choosing certain kinds of aluminum for cans that specifically address these issues, producers keep their product intact and consumers happy.
The choice of aluminum is also impacted by environmental considerations. Cans made from aluminium are 100% recyclable, while the use of alloys such as 3104 and 3004 facilitates recycling. Aluminum that had been recycled is of the same quality and takes only 5% of the energy to make than brand new aluminum, significantly cutting down on carbon. The quick turnaround between recycled and back on the shelf, in as little as 60 days, is one of the reasons aluminum is among the most sustainable packages you can purchase. Zhenx Industry and other suppliers make certain the alloys they offer adhere to these environmental and quality specifications.
In conclusion, selecting appropriate aluminium can types strikes a balance between ease of production and environmental and economic sustainability while also providing strength to the product inside, creating constant demands in the industry as well as from consumersseeking quality as well features of packaging.