What is a common material used for constructing SCBA air cylinders?

SCBA air cylinders are primarily constructed using composite materials, although steel has traditionally been used in older designs. The use of composite materials is now more common due to their lightweight and high-strength characteristics, which improve overall portability and reduce fatigue for firefighters.

Composite cylinders are designed to withstand high pressures and are made from a combination of materials, typically including layers of carbon fiber or fiberglass around an inner liner. This construction allows them to hold compressed air securely while being lighter than steel cylinders, making it easier for firefighters to carry them into hazardous environments.

While steel cylinders are durable and can be used for SCBA systems, they are heavier and can lead to increased fatigue during extended operations. It's important to consider these factors when determining the best material for SCBA air cylinder construction, highlighting the advantages of composite materials in modern firefighting applications.