ASTM A213 T11(K11597) Serrated Fin Tube With Al1060 Fin Serrated Fin Tube For Power Plants
ASTM A213 T11(K11597) Serrated Fin Tube With Al1060 Fin Serrated Fin Tube
Ⅰ. Product Overview
The ASTM A213 T11 (K11597) Serrated Fin Tube with AL1060 Fin is a high-performance heat exchanger tube made from chromium-molybdenum steel, designed for superior heat transfer efficiency in high-temperature applications. Its serrated aluminum fins (AL1060) enhance surface area, providing increased thermal conductivity and improved heat dissipation.
Ⅱ. Chemical & Mechanical Properties of ASTM A213 T11
Base Tube Chemical Composition (%)
|
Element |
C |
Mn |
P (max) |
S (max) |
Si |
Cr |
Mo |
|
Range |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.50-1.00 |
1.00-1.50 |
0.44-0.65 |
Mechanical Properties (Base Tube)
|
Tensile Strength |
Yield Strength |
Elongation |
|
≥ 415 MPa (60 ksi) |
≥ 205 MPa (30 ksi) |
≥ 30% |
Ⅲ. Comparison T11 With T22
● Chemical Composition :T22 The higher chromium and molybdenum content compared to T11 gives T22 superior high-temperature tensile/creep strength, as well as significantly better resistance to oxidation and sulfide corrosion.
● Typical Max Continuous Service Temperature :The maximum continuous operating temperature of T22 is approximately 580-600°C, while the maximum continuous operating temperature of T11 is 540-560°C.
● Relative Cost:T11 is more economical, while T22 is more expensive because it has a higher chromium and molybdenum content and is a high-quality material.
● Typical Application Scenarios:T11 serves as a cost-effective workhorse for medium-temperature services like low-temperature superheaters and non-corrosive exchangers. In contrast, T22 is a premium grade specified for high-temperature surfaces in boilers firing sulfurous fuels, components demanding extended creep life, and heaters facing severe sulfidation risks.
Ⅳ. Applications Of ASTM A213 T11(K11597) Serrated Fin Tube With Al1060 Fin Serrated Fin Tube
● Heat Recovery Steam Generators (HRSGs) & Boilers: Extracting waste heat from corrosive flue gases (containing sulfur, moisture) to heat water/steam inside the T11 tubes.
● Air Preheaters: Heating combustion air for boilers and furnaces using hot flue gases.
● Process Gas Cooling: Cooling hot process streams in chemical/petrochemical plants where the external gas is moist or mildly corrosive.
● Marine & Offshore Applications: For heaters and coolers exposed to salt-laden atmospheres, where aluminum fins provide much better resistance than carbon steel.
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