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ASTM A213 TP321 Stainless Steel Tubes (UNS S32100) are titanium-stabilized austenitic stainless steel seamless tubes engineered for high-temperature services and corrosion-resistant applications. Manufactured to the ASTM A213 / ASME SA213 specification, TP321 tubes contain titanium which stabilizes the microstructure, preventing chromium carbide precipitation and enhancing resistance to intergranular corrosion in welded and high-heat environments. This makes them especially suitable for boilers, superheaters, heat exchangers, and refinery heater tubes operating at elevated temperatures.
These tubes offer excellent oxidation resistance, strong mechanical properties, superior weldability, and dimensional stability under conditions of thermal cycling and high-pressure operation. Available in various outside diameters, wall thicknesses, and lengths with finishes such as annealed, pickled, and bright annealed, ASTM A213 TP321 tubes are ideal for power plants, petrochemical units, industrial furnaces, and high-temperature process systems.