ASTM A213 TP304H Serrated Fin Tube For Reheater and Boiler

1. A213 TP304H Base Tube Composition

2. ASTM A213 TP304H Serrated Fin Tube: Comprehensive Description

ASTM A213 TP304H Serrated Fin Tubes are high-performance heat transfer components designed for enhanced efficiency in high-temperature environments, such as boilers, superheaters, and heat exchangers. These tubes combine the superior material properties of ASTM A213 TP304H austenitic stainless steel with a serrated fin design to optimize thermal conductivity and mechanical durability. Below is a detailed breakdown of their features, standards, and applications.

3. ASTM A213 TP304H Serrated Fin Tube 

• High-Temperature Performance:

Operating temperature up to 650°C, with oxidation resistance up to 850°C.

Superior creep rupture strength (critical for high-pressure applications like superheaters) .

• Mechanical Properties :

Tensile strength: ≥520 MPa

Yield strength: ≥210 MPa

Elongation: ≥35% (in heat-treated condition)

4. ASTM A213 TP304H Serrated Fin Tube Design

Structure: Fins are serrated (cut or grooved) to disrupt fluid boundary layers, promoting turbulence and increasing heat transfer efficiency by 2–3 times compared to smooth fins.

Manufacturing Process:

Fins are typically attached via high-frequency welding or embedded processes to ensure strong bonding and leak-proof performance 18.

Base tubes are manufactured using seamless processes (hot or cold working), as required by ASTM A213 13.

5. ASTM A213 TP304H Serrated Fin Tube Applications

Power Generation: Used in superheaters and reheaters of large-scale boilers for fossil-fuel power plants, especially in ultra-supercritical units.

Petrochemical Industry: Employed in heat exchangers and refinery piping systems where high temperature and corrosion resistance are critical.

Other High-Temperature Scenarios: Suitable for any application requiring efficient heat transfer under extreme conditions.

6. Comparison with Other Grades

Grade Key Features Typical Use Cases.
TP304 General corrosion resistance Low-pressure heat exchangers.
TP304H High creep strength, oxidation resistance Superheaters, high-temperature boilers.
TP347HFG Fine-grained, anti-fat cracking Ultra-supercritical boilers.
SUPER304H Cu/Nb-enhanced, higher stress tolerance Advanced superheaters (700°C+).

7. ASTM A213 TP304H Serrated Fin Tube Key Advantages

Enhanced Heat Transfer: Serrated fins increase surface area and turbulence.

Durability: TP304H’s high-temperature strength ensures longevity under thermal cycling.

Corrosion Resistance: Chromium and nickel content provides excellent resistance to oxidation and corrosive media.

8. ASTM A213 TP304H Serrated Fin Tube Important Notes

Standards Compliance: Ensure tubes meet the latest ASTM A213-24 requirements, particularly for high-temperature applications.

Inspection: Each tube undergoes rigorous testing, including hydrostatic or nondestructive electric tests.

Design Flexibility: Custom sizes (outside standard ranges) are acceptable if all other specifications are met .

Conclusion

ASTM A213 TP304H Serrated Fin Tubes are critical components in high-efficiency thermal systems, leveraging material excellence and innovative fin design. They are ideal for industries demanding reliability under extreme temperatures and pressures. For detailed technical parameters, always refer to the latest ASTM A213 standard.