What material use for boiler tubes?

Boiler tubes are typically made from high-strength materials such as carbon steel, alloy steel, and stainless steel. Carbon steel is commonly used for lower pressure applications, while alloy steels, which may contain chromium or molybdenum, are preferred for higher temperature and pressure environments due to their enhanced durability and resistance to corrosion. Stainless steel is also used in specific applications where corrosion resistance is critical. The choice of material depends on factors like operating conditions, pressure, and the type of fluid being heated.