Product Overview – ASTM A213 TP304 Seamless Tubes
ASTM A213 TP304 is a widely used austenitic stainless steel grade specified for seamless boiler tubes, superheater tubes, and heat exchanger tubes.
These tubes are manufactured through hot or cold drawing processes without welding, ensuring uniform strength, smooth internal surface finish, and high pressure resistance.
TP304 seamless tubes are commonly used in thermal power plants, chemical processing units, and high-temperature fluid transport systems.
Compared to welded tubes, seamless TP304 tubes provide superior pressure handling and structural reliability.
Standard & International Identification - ASTM A213 TP304 Seamless Tubes
Technical Specifications – TP304 Seamless Tubes
| Tube Type: | Seamless / Cold Drawn / Hot Finished |
| Outer Diameter Range: | 6 mm to 250 mm |
| Wall Thickness: | 0.8 mm to 20 mm |
| Length: | Random / Cut Length / U-Bend Tubes |
| Surface Finish: | Bright Annealed / Pickled & Annealed |
| Testing: | Plain End (PE), Beveled End (BE) |
| Testing: | Hydrostatic Test, Eddy Current Test, PMI |
| Certification : | EN 10204 3.1 / 3.2 MTC |
Applicable for Boiler & Heat Exchanger Service
All specifications are in accordance of ASTM A213 / ASME SA213 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition of ASTM A213 TP304 Seamless Tubes
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C) | 0.08% |
| Manganese (Mn) | 2.00 % |
| Silicon (Si) | 1.00% |
| Phosphorus (P) | 0.045 % |
| Sulfur (S) | 0.030 % |
| Chromium (Cr) | 18.0 – 20.0% |
| Nickel (Ni) | 8.0 – 11.0% |
| Iron : | Balance |
Note: Balanced chromium and nickel provide corrosion resistance and oxidation stability.
Mechanical Properties – TP304 Seamless Tubes
| Property | Minimum Value |
|---|---|
| Tensile Strength | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | 35% |
TP304 seamless tubes maintain strength under elevated temperature service conditions.
Heat & Corrosion Performance Advantages- ASTM A213 TP304 Seamless Tubes
SS 304 seamless boiler tubes offer:
For moderate high-temperature applications, TP304 is a widely accepted industry standard.
Major Industrial Applications of TP304 Seamless Tubes
- 🔸Boiler tubes
- 🔸Superheater tubes
- 🔸Heat exchanger systems
- 🔸Thermal power plants
- 🔸Chemical processing units
- 🔸Oil & gas industry
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