ASME SA213 TP304 Stainless Steel Seamless Boiler Tube For Heat Exchanger
ASME SA213 TP304 seamless stainless boiler tube is the “all-round” choice for heat-transfer equipment. With 18 % Cr and 8 % Ni it resists oxidation and moist-chloride attack from 150 °C up to 650 °C. Cold-drawn seamless processing ensures uniform wall thickness and low surface roughness, minimizing thermal resistance on the steam or thermal-oil side. The tube is therefore found in utility HP feed-water heaters, HRSG coils, chemical solvent-recovery evaporators and sanitary CIP heaters, raising overall heat-transfer coefficients without enlarging the envelope.
In boiler and pressure-vessel fabrication TP304 offers 515 MPa tensile strength and ≥ 35 % elongation, surviving 10 MPa internal pressure while absorbing start-up/shut-down thermal expansion. Mandatory 100 % eddy-current plus hydrostatic testing and ASTM A262 Practice A inter-granular corrosion qualification ensure long-term reliability. For units that undergo frequent or SIPS chemical cleaning, the smooth bore minimizes deposit hold-up and pit initiation, routinely giving bundles a 15-year service life.
The Stainless Steel Seamless Tube ASTM SA213 TP304 (1.4301, SUS304) is designed for petrochemical applications. The ASME SA213 designation confirms compliance with American Society of Mechanical Engineers specifications for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat exchanger tubes.These tubes undergo rigorous testing including hydrostatic tests, non-destructive testing, and dimensional inspections to ensure quality and safety.
TP304 offers excellent corrosion resistance and weldability, with composition of chromium (18-20%) and nickel (8-10.5%). While resistant to many corrosive environments, it may not be suitable for chloride-containing conditions.
| Grade | Cr | Ni | C |
|---|---|---|---|
| SA213 TP304 | 18.0-20.0% | 8-10.5% | ≤ 0.08% |
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|
| SA213 TP304 | ≥ 205 MPa (30 ksi) | ≥ 515 MPa (75 ksi) | ≥ 35% in 50 mm | Typically ≤ 90 HRB |
- Chemical Processing: Heat exchangers for mild chemicals and process piping requiring moderate corrosion resistance
- Food and Beverage Industry: Processing equipment resistant to food acids, ideal for dairy and beverage systems
- Water Treatment: Condenser tubes for fresh water systems ensuring longevity and reliability
- HVAC Systems: Coils and heat exchangers for efficient heat transfer in moderate temperature environments
- Pharmaceutical Industry: Process equipment ensuring cleanliness and corrosion resistance in sensitive processes
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