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Typical CO2 tank cylinders used for various purposes such as carbonation in beverages, firefighting, or industrial applications are often constructed out of aluminum. Aluminum is favored for CO2 cylinders due to its lightweight nature, corrosion resistance, and ability to withstand high pressures. Additionally, aluminum cylinders are generally more affordable and easier to manufacture compared to other materials such as steel or composite materials. Typical CO2 tank cylinders used for various purposes such as carbonation in beverages, firefighting, or industrial applications are often constructed out of aluminum. Aluminum is favored for CO2 cylinders due to its lightweight nature, corrosion resistance, and ability to withstand high pressures. Additionally, aluminum cylinders are generally more affordable and easier to manufacture compared to other materials such as steel or composite materials. Some CO2 cylinders are constructed using composite materials, such as fiberglass-wrapped aluminum or carbon fiber. These cylinders offer a combination of lightweight construction and high strength. Composite cylinders are often used in applications where weight reduction is critical, such as portable or aerospace applications. Steel and stainless steel CO2 cylinders too exist. Steel cylinders are commonly used for storing compressed gases, including CO2. While less common than carbon steel cylinders, stainless steel cylinders are sometimes used for storing CO2, especially in industrial or corrosive environments. Stainless steel cylinders are highly durable and resistant to corrosion, making them suitable for long term use in harsh conditions.