ASME SA213 T12 High-Frequency Welded Finned Tubes for Waste Heat Recovery Boilers
Product Overview
ASME SA213 T12 High-Frequency Welded Finned Tubes are designed for heat-transfer applications in Waste Heat Recovery Boilers (WHRBs), where efficient heat recovery, elevated-temperature strength, and reliable long-term operation are required.
The base tube is manufactured from ASME SA213 T12, a chromium-molybdenum alloy steel grade intended for boiler, superheater, and heat-exchanger service. The addition of chromium and molybdenum provides the tube with improved elevated-temperature performance compared with conventional carbon steel tube materials.
A high-frequency welded fin structure is continuously attached to the outer surface of the base tube. The fins increase the effective heat-transfer area on the flue-gas side, allowing the heat exchanger to recover more energy within a compact tube-bank configuration.
These finned tubes are particularly suitable for industrial waste heat recovery systems where hot exhaust gases are used to generate steam or preheat boiler feedwater.
Key Features
- Base Tube Material: ASME SA213 T12
- Fin Type: High-Frequency Welded Fins
- Material Type: Chromium-Molybdenum Alloy Steel
- Primary Application: Waste Heat Recovery Boilers
- Heat Transfer: Increased external surface area for improved gas-side heat transfer
- High-Temperature Performance: Suitable for elevated-temperature boiler and heat-recovery service
- Continuous Fin Attachment: High-frequency welding provides a consistent fin-to-tube connection along the tube length
- Custom Manufacturing: Tube diameter, wall thickness, fin height, fin thickness, fin pitch, and tube length can be manufactured according to project requirements
Applications
ASME SA213 T12 High-Frequency Welded Finned Tubes are commonly used in:
- Waste Heat Recovery Boilers (WHRB)
- Heat Recovery Steam Generators (HRSG)
- Boiler Economizers
- Industrial Boilers
- Superheaters
- Reheaters
- Waste Heat Recovery Systems
- High-Temperature Heat Exchangers
- Power Generation
- Petrochemical and Refinery Plants
- Steel and Cement Plants
Chemical Composition of ASME SA213 T12
ASME SA213 T12 is a low-alloy chromium-molybdenum steel. Chromium and molybdenum are the principal alloying elements responsible for its elevated-temperature service characteristics.
The following composition is based on ASTM A213 T12 requirements.
| Element | Chemical Composition (%) |
|---|---|
| Carbon (C) | 0.05–0.15 |
| Manganese (Mn) | 0.30–0.61 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | ≤ 0.50 |
| Chromium (Cr) | 0.80–1.25 |
| Molybdenum (Mo) | 0.44–0.65 |
| Nickel (Ni) | Not specified |
| Vanadium (V) | Not specified |
| Iron (Fe) | Balance |
The standard permits T12 to be ordered with sulfur up to 0.045% under a specified provision, so the exact requirement should be confirmed against the applicable purchase specification.
Mechanical Properties of ASME SA213 T12
Typical minimum mechanical requirements for T12 include a tensile strength of 415 MPa, yield strength of 220 MPa, and minimum elongation of 30%. A maximum hardness of approximately 163 HBW is also commonly specified for T12.
| Mechanical Property | Requirement |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 220 MPa |
| Elongation | ≥ 30% |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.