What Metal Is Used in Air Gun Compressed Air Cartridges and Why?

For those interested in air guns and how they work, one question that often arises is the type of metal used in the compressed air cartridge that propels the pellets or BBs. This article aims to elucidate the commonly used metals, reasons behind their selection, and comparisons of different materials used in these cartridges.

The Use of Steel

Steel is a widely used material for air gun compressed air cartridges. The most common type of steel used is carbon steel. Carbon steel is known for its strength and durability, which makes it an excellent choice for the compressive forces involved in air guns. Additionally, certain steels are zinc-plated to enhance their corrosion resistance. This plating not only protects the metal but also gives the cartridge a sleek, shiny finish.

The Role of Brass

In cases where a lighter and less prone-to-rust material is preferred, brass is a popular choice. Brass is a copper-zinc alloy that provides a balance between strength and malleability. Brass cartridges are often preferred in air guns designed for recreational use as they are softer and more forgiving. Manufacturers also offer steel versions of these cartridges, which can be more suitable for use in high-pressure air guns.

Rust Resistance: Copper Washed and Cadmium Plated Steel

Rust resistance is a critical factor in air gun cartridges, as it ensures the longevity of the product and prevents the build-up of corrosion within the air gun itself. To achieve this, some steel cartridges are copper-washed or cadmium-plated.

Copper washing involves applying a layer of copper to the surface of the steel, which acts as a barrier against corrosion. This process not only protects the steel but also creates a unique, sometimes iridescent, appearance.

Cadmium plating is another method used to prevent rust. Cadmium is a metal that can effectively protect steel from rust by forming a protective layer on its surface. This layer is highly resistant to the elements and can significantly extend the life of the cartridge.

Image Sources and References

For a visual understanding of the materials used in air gun cartridges, airgun shooters often refer to magazine articles and online resources. These images provide a clear view of the internal mechanisms and materials used in different types of air gun cartridges. Many enthusiasts and firearm enthusiasts can find detailed images and descriptions in professional airgun magazines, online forums, and specialized blogs dedicated to the hobby.

Conclusion

The choice of metal in air gun compressed air cartridges depends on the specific needs of the air gun and the user's preferences. Steel is a reliable and durable option, often zinc-plated for additional protection against rust. Brass offers a lighter and softer alternative, while specific treatments like copper washing and cadmium plating enhance the longevity and performance of the cartridges. Understanding these materials and their properties helps in making informed decisions about the right cartridge for your air gun.