ASME SA213 T12 HFW Fin Tube For Boiler And Heat Exchanger
ASME SA213 T12 HFW FIN TUBE FOR BOILER AND HEAT EXCHANGER
ASME SA213 T12 is a specification for seamless ferritic alloy steel boiler, superheater, and heat exchanger tubes. HFW (High Frequency Welding) fin tubes are a type of finned tubes that are manufactured using high-frequency electric resistance welding. These fin tubes are used in boilers and heat exchangers to enhance heat transfer efficiency.
The combination of ASME SA213 T12 tubes and HFW fin tubes provides several benefits for boiler and heat exchanger applications. The T12 alloy steel offers excellent mechanical properties, high temperature strength, and corrosion resistance, making it suitable for high-pressure and high-temperature environments.
The HFW fin tubes have fins that are welded onto the base tube using high-frequency electric resistance welding. This welding technique ensures a strong bond between the fins and the tube, resulting in improved heat transfer efficiency. The fins increase the surface area of the tube, allowing for better heat exchange between the fluid inside the tube and the surrounding environment.
Overall, the use of ASME SA213 T12 HFW fin tubes in boilers and heat exchangers helps improve the overall performance and efficiency of these systems, leading to cost savings and better energy utilization.
Chemical Composition:
| Chemical Components (%) | |||||||
| Grade | C | Mn | P | S | Si | Cr | Mo |
| T11 | 0.05-0.15 | 0.30-0.60 | ≤0.025 | ≤0.035 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
| T12 | 0.05-0.15 | 0.30-0.61 | ≤0.025 | ≤0.035 | 0.5 | 0.80-1.25 | 0.44-0.65 |
| T22 | 0.05-0.15 | 0.30-0.60 | ≤0.025 | ≤0.035 | 0.5 | 1.90-2.60 | 0.87-1.13 |
Heat Treatment Requirements:
| Grade | UNS Number | Heat Treat Type | Subcritical Annealing or Tempering Temperature, Min or range °F [°C] |
| T11 | K11597 | full or isothermal anneal normalize and temper | 1200 [650] |
| T12 | K11562 | full or isothermal anneal normalize and temper subcritical anneal | 1200 to 1350[650 to 730] |
| T22 | K21590 | full or isothermal anneal normalize and temper | 1250 [675] |
Tensile Requirements and Hardness
| Mechanical properties | ||||
| Grade | Tensile | Yield | Elongation | Hardness |
| Strength (Mpa) | Strength (Mpa) | (%) | (HRB) | |
| T11 | ≥415 | ≥220 | ≥30 | ≤85 |
| T12 | ≥415 | ≥220 | ≥30 | ≤85 |
| T22 | ≥415 | ≥220 | ≥30 | ≤85 |
Application
- HVAC & Boiler
- Power Plants
- Heat Recovery Steam Generators
- Petrochemical Industries
- Marine Applications
- Refrigeration Applications
- Economizers
- Oil and Gas Coolers
- Plumbing and Air Conditioning
- Condensers and Evaporators
- Shell and Tube Heat Exchanger
- Other various Heat exchanger applications
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