ASME SA213 TP347H Stainless Steel Seamless Tube for Heat Exchanger and Superheater

ASME SA213 TP347H Stainless Steel Seamless Tube for Heat Exchanger and Superheater

ASME SA213 is a standard for seamless ferritic and austenitic alloy steel tubes for boilers, superheaters, and heat exchangers developed by the American Society of Mechanical Engineers (ASME). ASME SA213 TP347H stainless steel seamless heat exhcanger tube is a high-performance austenitic stainless steel seamless tube widely used in industrial fields under high temperature and high pressure environments, such as power plant boilers, petrochemicals, nuclear energy industries, etc.

TP347H stainless steel can operate stably for extended periods at temperatures up to 650°C, with an oxidation resistance temperature up to 850°C. It exhibits excellent resistance to intergranular corrosion and polysulfide intergranular stress corrosion, making it suitable for corrosive media such as acids, alkalis, and salts. TP347H has a tensile strength of 530 MPa, a yield strength of not less than 205 MPa, an elongation of not less than 40%, and a hardness of approximately 289 HBW. To ensure its performance, TP347H stainless steel seamless tubes must be delivered in a solution-annealed state. The heat treatment temperature is typically ≥1040°C, followed by rapid cooling (water quenching) to completely dissolve carbides such as niobium carbide into the austenitic matrix, obtaining a uniform supersaturated solid solution, thus achieving optimal corrosion resistance and subsequent age-hardening capabilities.

ASME SA213 TP347H Stainless Steel Seamless Tube Chemical Composition

TP347H Stainless Steel Compare with other Materials

• vs. TP347: The primary difference between TP347H and TP347 is their carbon content. The upper limit of TP347's carbon content is 0.08%, while TP347H's carbon content ranges from 0.04% to 0.10%, with a minimum carbon content requirement of 0.04%. Therefore, TP347H offers higher high-temperature strength and is specifically designed for high-temperature applications.
• vs. TP321H: TP321H primarily stabilizes carbon through the addition of titanium, which also provides resistance to intergranular corrosion. Niobium is generally considered to provide a greater stabilizing effect than titanium. Therefore, TP347H generally outperforms TP321H in terms of intergranular corrosion resistance and high-temperature strength.

ASME SA213 TP347H Stainless Steel Seamless Tube Main Application

• Power industry: TP347H stainless steel seamless heat exhcanger tube can be used to manufacture high-temperature and high-pressure components such as superheaters, reheaters, and water-cooled walls for supercritical and ultra supercritical boilers. TP347H stainless steel heat exchanger tube has good resistance to high temperature oxidation and steam corrosion, and can withstand high temperature environments above 600 ℃; In nuclear reactors, TP347H heat exchanger tubes can be used for key equipment such as steam generators and heat exchangers, meeting the strict requirements of the nuclear energy industry for material high temperature resistance, corrosion resistance, and radiation resistance.
• Petrochemical industry: TP347H stainless steel seamless heat exhcanger tubes are suitable for high-temperature reactors, cracking furnaces, heat exchangers and other equipment in refining and chemical production, and can withstand the erosion of high temperature, high pressure and corrosive media; During the catalytic cracking process, TP347H stainless steel seamless tubes can be used as high-temperature gas pipelines and reactor liners, providing excellent heat and corrosion resistance.
• Aerospace field: TP347H stainless steel seamless heat exhcanger tubes can be used to manufacture high-temperature components of aircraft engines, such as combustion chambers, turbine blades, etc., meeting the stringent requirements for material high-temperature strength and fatigue resistance in the aerospace field; In rocket engines, TP347H heat exchanger tubes can be used to manufacture high-temperature gas pipelines and nozzles, capable of withstanding extreme high temperatures and pressures.
• Automotive industry: TP347H stainless steel seamless heat exhcanger tubes can be used to manufacture high-performance automotive exhaust systems, especially the exhaust manifolds and turbine housings of turbocharged engines, providing excellent high temperature and corrosion resistance.
• Environmental protection equipment: In industrial waste gas treatment systems, TP347H stainless steel seamless heat exhcanger tubes can be used to manufacture high-temperature flue gas pipelines and heat recovery devices, which can withstand the erosion of high temperatures and corrosive gases.