ASTM A312 TP304H Stainless Steel Serrated Finned Tubes for Waste Heat Recovery
ASTM A312 TP304H Stainless Steel Serrated Finned Tubes for Waste Heat Recovery
Chemical Composition (%) Maximum
| Grade | C | Mn | P | S | Si | Cr | Ni |
| TP304H | 0.04-0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 |
Mechanical Properties
| Grade | Tensile Strength min | Yield Strength min | Elongation in 2" or 50mm min |
| TP304H | 75ksi (515 MPa) | 30ksi (205 MPa) | 35% |
TP304H is a high-carbon 304 grade stainless steel conforming to ASTM A312. It is characterized by excellent strength and structural stability at high temperatures, with a continuous operating temperature up to 500°C. It resists thermal fatigue and deformation under frequent temperature fluctuations, making it ideal for the high-temperature gas conditions in waste heat recovery systems.And austenitic stainless steel exhibits strong resistance to oxidation, sulfur-containing gases, weak acid condensation, and mild chloride corrosion. It effectively prevents rusting, pitting, and material degradation in gaseous environments, extending its long-term service life.
Core Advantages of Stainless Steel HF Welded Finned Solid Tubes in Furnace Service
ASTM A312 TP304H The serrated end structure disrupts the fluid boundary layer, enhancing fluid-gas turbulence. Compared to ordinary thin tubes and bare tubes, it improves heat transfer efficiency by 20%–30%. The extended heat exchange zone significantly enhances waste heat capture capacity, maximizing energy recovery.The finely serrated groove profile reduces dust adhesion and surface accumulation. It effectively handles exhaust gases from boilers, industrial furnaces, and incinerators, reducing cleaning frequency and maintenance costs.
This type of finned tube is manufactured using high-frequency resistance welding, with the fins firmly attached to the base tube without gaps or separation. The entire assembly withstands fluid and gas impacts and mechanical vibrations during operation, ensuring stable and safe long-term operation.
Key Application For Waste Heat Recovery
Heat Recovery Steam Generators (HRSG):It can recover heat from high-temperature waste gas to generate steam, which can be used for power generation, industrial production, or heating.
Boiler Auxiliary Heat Exchangers:Economizers/Air Preheaters
Industrial Furnace & Kiln Waste Heat Systems
Incinerator Waste Heat Recovery Units
Process Exhaust Heat Recovery in Chemical & Petrochemical Industry
Central Heating & District Energy Systems
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