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ASTM A249 / ASME SA249 TP304 Bright Annealed Stainless Steel Welded Tube Heat Exchanger Tube
ASTM A249 TP304 tubes are used in various applications, including heat exchangers, condensers, pressure vessels, and piping systems in several industries such as petrochemical, food processing, and pharmaceuticals. The tubes are produced using a welded manufacturing process, ensuring uniformity and high production efficiency. Non-destructive testing is often employed to check the quality of the welds.
The Equivalent Grade of ASTM A240 TP304 Stainless Steel Welded Tube
| JIS | ASTM | UNS | ISO | DIN EN/DIN | W-Nr. | EN | GOST | BS EN/BS |
| SUS 304 | 304 | S30400 | X5CrNi 18-10 | X5CrNi 18-10 (X5CrNi 18-9) | 1.4301 | X5CrNi 18-10 | 08Х18Н10 | 304S15 |
Chemical Composition of ASTM A240 TP304 Stainless Steel Welded Tube
| Grade | C | Si | Mn | Cr | Ni | S | P | Fe |
| TP304 | 0,08 | 1,0 | 2 | 18 – 20 | 8 – 11 | 0,03 | 0,045 | Bal. |
Mechanical Properties of ASTM A240 TP304 Stainless Steel Welded Tube
| Heat treatment / condition | Tensile Strength Mpa | Yield Point σs Mpa | Elongation δ % | HBW |
|---|---|---|---|---|
| Solutioning Temperature 1040℃ | ≥515 | ≥205 | ≥35 | HRB ≤90 |
Dimensional Tolerences--all dimensions in inches (mm)
| Size OD | Nominal Wall | Outside Diameter | Length | Wall |
| inch (mm) tolerance | ||||
| 1/2" (12.7) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
| 3/4" (19.1) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
| 1" (25.4) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
| 1-1/2" (38.1) | 0.065" (1.65)/0.049" (1.25) | +/-0.008" (0.20) | +1/8" (3.18) - 0 | +/-10.0% |
| 2" (50.8) | 0.065" (1.65)/0.049" (1.25) | +/-0.008" (0.20) | +1/8" (3.18) - 0 | +/-10.0% |
| 2-1/2" (63.5) | 0.065" (1.65) | +/-0.010" (0.25) | +1/8" (3.18) - 0 | +/-10.0% |
| 3" (76.2) | 0.065" (1.65) | +/-0.010" (0.25) | +1/8" (3.18) - 0 | +/-10.0% |
| 4" (101.6) | 0.083" (2.11) | +/-0.015" (0.38) | +1/8" (3.18) - 0 | +/-10.0% |
| 6" (152.4) | 0.083" (2.11) | +/-0.030" (0.76) | +1" (25.4) - 0 | +/-10.0% |
| 6" (152.4) | 0.109" (2.77) | +/-0.030" (0.76) | +1" (25.4) - 0 | +/-10.0% |
| 8" (203.2) | 0.109" (2.77) | +0.061" (1.55)/-0.031" (0.79) | +1" (25.4) - 0 | +/-10.0% |
Applications
Heat Exchangers: TP304 welded tubes are commonly used in heat exchangers that require efficient heat transfer and resistance to corrosive fluids. Their ability to withstand high temperatures and pressures makes them ideal for this purpose.
Boilers: These tubes are often found in boiler systems, where they can handle the high-temperature steam and other fluids used in the generation of power. Their robust construction ensures reliability in demanding environments.
Condensers: In condenser applications, TP304 welded tubes help in cooling and condensing steam back into liquid form, making them essential components in power plants and refrigeration systems.
Chemical Processing: The chemical industry relies on ASTM A249 TP304 welded tubes for transporting reactive and corrosive substances. Their resistance to corrosion ensures the safe handling of various chemical processes.
Food and Beverage Industry: TP304 is a standard grade for food processing equipment due to its hygienic properties and resistance to corrosion. It is used in applications such as pasteurizers, evaporators, and other equipment that comes into contact with food products.
Pharmaceutical Industry: The pharmaceutical sector uses these tubes in processes that require high levels of cleanliness and corrosion resistance. They are utilized in the manufacturing of drugs and other healthcare products.
Oil and Gas: In the oil and gas industry, TP304 welded tubes can be found in various applications, including pipelines, heat exchangers, and separator systems, thanks to their robustness and durability.
Power Generation: These tubes are employed in various power generation systems, including nuclear and fossil fuel plants, due to their ability to withstand extreme conditions.
Nuclear Applications: TP304's good corrosion resistance and mechanical properties make it suitable for use in nuclear reactors and associated components.
