ASTM A312 TP304H Stainless Steel Pipe With SS Fin Strip, Serrated Fin Tube For Furnace
ASTM A312 TP304H Stainless Steel Pipe With SS Fin Strip, Serrated Fin Tube For Furnace
Product Overview
ASTM A312 TP304H serrated fin tube is manufactured from high-temperature stainless steel pipe with stainless steel fin strips mechanically or resistance-welded onto the tube surface. The serrated fins improve heat transfer by disrupting the boundary layer of gas flow, making them ideal for high-temperature furnace and heater applications.
Chemical Composition (ASTM A312 TP304H)
| Element | Content (%) |
|---|---|
| C (Carbon) | 0.04 – 0.10 |
| Mn (Manganese) | ≤ 2.00 |
| Si (Silicon) | ≤ 1.00 |
| P (Phosphorus) | ≤ 0.045 |
| S (Sulfur) | ≤ 0.030 |
| Cr (Chromium) | 18.00 – 20.00 |
| Ni (Nickel) | 8.00 – 11.00 |
| N (Nitrogen) | ≤ 0.10 |
| Fe (Iron) | Balance |
Mechanical Properties (ASTM A312 TP304H)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥ 515 |
| Yield Strength (MPa) | ≥ 205 |
| Elongation (%) | ≥ 35 |
| Hardness (HB) | ≤ 192 |
| Impact Toughness (J) | Good at high temp |
Applications
-Furnace convection sections for petrochemical plants
-Heater coils in oil refineries
-Boiler economizers operating at high temperatures
-Waste heat recovery units in process industries
-Gas turbine exhaust heat exchangers
-Thermal oil heaters for chemical processing
Advantages
-High temperature resistance (TP304H can handle continuous service at ~870°C)
-Improved heat transfer efficiency due to serrated fins
-Excellent oxidation and corrosion resistance in furnace atmospheres
-Good weldability for fabrication and repairs
-Long service life under high thermal stress
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