Gas cylinders are primarily made of what material?

Gas cylinders are primarily made of seamless steel because this material provides the necessary strength and durability required to safely contain high-pressure gases. Seamless steel cylinders are designed to withstand significant internal pressure, which is critical for preventing ruptures or leaks. This type of steel is manufactured without seams, reducing the risk of failure points that can occur in welded cylinders. The smooth, uniform structure of seamless steel enhances the integrity and safety of the cylinder under pressure.

While aluminum and composite materials are used in some specific cylinder applications due to their lighter weight and resistance to corrosion, they do not possess the same strength characteristics as seamless steel for high-pressure environments. Cast iron is too brittle and heavy for effective gas cylinder use, making it an unsuitable choice. Therefore, seamless steel remains the predominant material for gas cylinder construction in various medical and industrial applications, ensuring both safety and reliability.