ASTM A213 TP321 Heat Exchanger Stainless Steel Seamless Tubes

ASME SA213/ASTM A213 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, TP304, TP321, etc.In a heat exchanger, TP321 tubes play a crucial role due to their high-temperature resistance, corrosion resistance, and stability.

Chemical Composition (%) max

Carbon: 0.08

Manganese: 2.00

Phosphorus: 0.045

Sulfur: 0.030

Silicon: 1.00

Chromium: 17.0-19.0

Nickel: 9.0-12.0

Titanium: 5(C+N)-0.70

Mechanical Properties

Austenitizing/Solutioning Temperature,min or range : 1900 °F [ 1040°C ]

Tensile Strength, min. : 75ksi [ 515MPa ] ; Yield Strength, min.: 30ksi [ 205MPa ]

Elongation in 2 in. or 50mm, min.: 35% ; Brinell/Vickers: 192HBW/200HV ; Rockwell: 90HRB

Advantages

Heat Transfer Efficiency
TP321 tubes facilitate efficient heat exchange between two fluids (liquid/liquid, gas/liquid, or gas/gas) due to their good thermal conductivity.Even under high thermal stress, they maintain structural integrity .

Corrosion & Oxidation Resistance
Titanium-stabilized (321 SS) composition prevents intergranular corrosion (sensitization) in high-temperature environments (up to 900°C / 1650°F).

Due to the resistant to acidic, caustic, and chloride-rich environments, making them ideal for chemical, petrochemical, and refinery applications.

High-Temperature Strength
TP321 retains mechanical strength at elevated temperatures, preventing deformation or failure in boilers, superheaters, and exhaust systems.

Resistance to Stress Corrosion Cracking (SCC)
The addition of titanium (Ti) minimizes carbide precipitation at grain boundaries, reducing the risk of cracking in welded or high-stress zones.

Applications

Oil & Gas : Used in heat recovery systems, condensers, and furnace tubes.

Aerospace & Automotive: Used in exhaust systems and thermal management.

Power Plants: Common in steam boilers, superheaters, and heat exchangers.

Chemical Processing: Handles corrosive fluids and high-pressure steam.

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories,  the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.