YUHONG HOLDING GROUP CO., LTD
YUHONG HOLDING GROUP CO., LTD
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Stainless Steel Seamless ASTM A213 TP321 Bundle Tubes For Power Plants
ASME SA213/ASTM A213 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5,TP304,TP316L,TP321, TP347, TP310S etc.
| Chemical Composition (%) max | ||||||||||
| Grade | UNS | C | Mn | P | S | Si | Cr | Ni | Ti | N |
| TP321 | S32100 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | 10x(C+N)-0.7 | ... |
C → Reduces intergranular corrosion risk
Cr → Oxidation & corrosion resistance
Ni → Austenitic structure stability
Ti→Prevents carbide precipitation (sensitization) during welding or high-temperature exposure (450–850°C)
| Mechanical Properties | |||
| Tensile Strength, min | Yield Strength, min. | Elongation in 2 in. or 50mm, min. | Brinell/Vickers;Rockwell |
| 75ksi [ 515MPa ] | 30ksi [205MPa ] | 35% | 192HBW/200HV ;90HRB |
Austenitic Structure: Provides excellent toughness and high-temperature strength.
TP321 superior to 304/304L: Better resistance to intergranular corrosion in welded applications.
Key Features Suitable For Heat Exchangers
Material of ASTM A213 TP321 is a titanium-stabilized austenitic stainless steel specifically designed for high-temperature and corrosive environments. Its properties make it an excellent choice for bundle tubes used in heat exchangers, boilers, and other critical applications
TP321 has high-temperature resistance,performs well in prolonged high-heat conditions (e.g., superheaters, reformer tubes)
Common Applications in Power Plants
| Shell & Tube Heat Exchangers,Boiler Superheaters & Condensers |
| Petrochemical & Refinery Furnaces |
| Power Generation Systems |
| Food & Pharmaceutical Processing |