ASTM A213 T9 Alloy Steel Heat Exchanger Tube, Cold Drawn U-Bend Tube For Nuclear Power Plant
ASTM A213 T9 Alloy Steel Heat Exchanger Tube, Cold Drawn U-Bend Tube For Nuclear Power Plant
ASTM A213 T9 is a seamless ferritic alloy steel tube, composed of 9% chromium and 1% molybdenum (9Cr-1Mo), specifically designed for high-temperature heat exchanger services. The cold-drawn manufacturing process ensures precise dimensional tolerances, a smooth surface finish, and enhanced mechanical properties, which are critical for demanding nuclear power applications.
When formed into a U-bend configuration, these tubes effectively accommodate thermal expansion, reduce stress on tube sheets, and enable a compact heat exchanger design. The T9 material offers excellent resistance to high-temperature oxidation, steam corrosion, and creep deformation, making it suitable for secondary heat exchangers and auxiliary systems in nuclear plants where operating temperatures can reach up to 595°C. Additionally, each U-bend tube undergoes stress-relief heat treatment to eliminate residual bending stresses, ensuring long-term reliability and safety in nuclear power generation.
Advantages of ASTM A213 T9 Alloy Steel Heat Exchanger Tube
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Excellent high-temperature & creep resistance
Stable mechanical strength under long-term high-temperature service, suitable for boiler, heat exchanger and power plant conditions.
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Strong oxidation & corrosion resistance
As a typical 9Cr-1Mo chrome-moly alloy steel, it effectively resists high-temperature oxidation, sulfidation and medium corrosion.
-
High pressure bearing capacity
Seamless cold-drawn structure ensures uniform wall thickness and reliable pressure performance.
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Good thermal conductivity & heat transfer efficiency
Ideal for heat exchangers, condensers and steam generators.
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Excellent formability & weldability
Suitable for U-bending, expanding and welding without easy cracking.
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Stable dimensional accuracy
Cold-drawn process guarantees tight tolerance for tube-to-tube sheet assembly.
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Long service life & low maintenance cost
High structural stability reduces failure risk in harsh working environments
Chemical Composition of A213 T9 Heat Exchanger Tube
Note: Values are maximum unless a range is specified. The base material is Iron (Fe).
|
Element |
Percentage (%) |
|---|---|
|
Carbon (C) |
≤ 0.15 |
|
Manganese (Mn) |
0.30 – 0.60 |
|
Phosphorus (P) |
≤ 0.025 |
|
Sulfur (S) |
≤ 0.025 |
|
Silicon (Si) |
0.25 – 1.00 |
|
Chromium (Cr) |
8.00 – 10.00 |
|
Molybdenum (Mo) |
0.90 – 1.10 |
Mechanical Properties of A213 T9 Heat Exchanger Tube
Note: Values represent minimum requirements for the tubes at room temperature.
|
Property |
Value (Metric) |
Value (Imperial) |
|---|---|---|
|
Tensile Strength (TS) |
≥ 415 MPa |
≥ 60,000 psi |
|
Yield Strength (YS) |
≥ 205 MPa |
≥ 30,000 psi |
|
Elongation |
≥ 30% |
≥ 30% |
|
Hardness (Typical Max) |
≤ 163 HBW |
≤ 85 HRB |
A213 T9 Heat Exchanger Tube Applications (Industry/Equipment)
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Heat exchanger (shell & tube type)
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Boiler components (superheater, reheater, water wall, economizer)
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Steam generator
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High-pressure piping
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Nuclear power plant (specific secondary/auxiliary systems)
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Petrochemical furnace (ethylene cracker, reformer)
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Concentrated solar power (CSP) (thermal receiver)
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