ASTM A213 T9 Alloy Steel Studded Fin Tube For Furnace
ASTM A213 T9 ASME SA213 T11 A106 GR.B Studded Fin Tube ,Steam Reforming Furnace
YUHONG GROUP ASME SA213 T9 / ASTM A213 T9 is a standard specification for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes. This specification covers minimum wall thickness, seamless alloy-steel tubes for various grades of service. The T9 grade of tube is a particular type of alloy steel that is suitable for high-temperature service and is commonly used in industries such as power generation, chemical processing, petrochemical, and refining. The T9 grade has a high resistance to oxidation, corrosion, and thermal fatigue. These tubes are seamless, which makes them strong enough to withstand high-pressure situations and protect the equipment against damage.
Chemical Composition of A213 T9
| Compositions | Data |
| UNS Designa-tion | K41545 |
| Carbon(max.) | 0.15 |
| Manganese | 0.30-0.60 |
| Phosphorus(max.) | 0.025 |
| Sulfur(max.) | 0.025 |
| Silicon(max.) | 0.50 |
| Nickel | … |
| Chromium | 4.00-6.00 |
| Molybdenum | 0.45-0.65 |
| Other Elements | … |
Mechanical Properties of A213 T9
| Properties | Data |
| Tensile strength, min, (MPa) | 415 Mpa |
| Yield strength, min, (MPa) | 205 Mpa |
| Elongation, min, (%), L/T | 30/20 |
Application:
Boilers
Power Plants
Refineries
Waste-to-Energy Plants
Competitive Advantage:
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Enhanced Heat Transfer:
- The studs increase the surface area of the tube, improving the overall heat transfer efficiency. This is particularly beneficial in applications where efficient heat exchange is critical.
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Improved Turbulence:
- The studs create turbulence in the fluid flow, which enhances the heat transfer coefficient by disrupting the boundary layer and promoting better mixing of the fluid.
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High-Temperature Resistance:
- Studded fin tubes are often made from materials that can withstand high temperatures, making them ideal for applications in furnaces, boilers, and other high-temperature environments.
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Corrosion Resistance:
- These tubes are designed to resist corrosion, especially when used in harsh environments such as petrochemical plants, refineries, and chemical processing facilities.
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Durability and Longevity:
- The studding process creates a robust mechanical bond between the fins and the tube, ensuring that the fins remain securely attached even under thermal cycling and mechanical stress.
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Efficient in Fouling Conditions:
- Studded fin tubes are less prone to fouling compared to other types of finned tubes. The studs can reduce the accumulation of deposits, which is particularly advantageous in environments where fouling is a concern.
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Versatility in Applications:
- They are suitable for a wide range of applications including heat exchangers, air coolers, and economizers in industries such as power generation, oil and gas, and chemical processing.
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Customizable Design:
- Studded fin tubes can be customized in terms of stud size, spacing, and material to meet specific application requirements, providing flexibility in design and performance optimization.
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Enhanced Mechanical Strength:
- The studs add mechanical strength to the tube, making it more resistant to physical damage and wear over time, which is important in demanding industrial applications.
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Maintenance and Cleaning:
- The design of studded fin tubes can make them easier to clean and maintain compared to other finned tubes, ensuring consistent performance and prolonging the lifespan of the equipment.
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