ASTM A213 T92 Seamless Ferritic Alloy Steel Tubes (UNS K92460)
ASTM A213 T92 Seamless Ferritic Alloy Steel Tubes are engineered for extreme high-temperature and high-pressure environments, primarily used in modern power plants, superheaters, reheaters, and boiler systems. Developed from advanced creep-resistant steel metallurgy, ASTM A213 T92 (UNS K92460) offers outstanding creep rupture strength, thermal stability, and oxidation resistance, making it one of the most reliable grades for elevated temperature service.
Key Features
- Exceptional high-temperature creep and tensile strength
- Superior corrosion & oxidation resistance
- Excellent micro-structural stability under prolonged heat
- Low thermal expansion & high hardness
- High weldability with proper PWHT
- Best choice for ultra-supercritical boiler applications
- Consistent performance under cyclic thermal loads
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | K92460 |
| ASME | SA213 T92 |
| EN | X10CrWMoVNb9-2 |
| DIN | 1.4901 |
| BS | 92 Grade Ferritic Alloy Steel |
Available Sizes
| Category | Size Range |
|---|---|
| Outside Diameter | 6 mm – 120 mm |
| Wall Thickness | 0.5 mm – 15 mm |
| Length | Up to 12 meters (custom lengths available) |
ASTM A213 T92 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.07 – 0.13 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.010 |
| Silicon (Si) | 0.20 – 0.50 |
| Chromium (Cr) | 8.5 – 9.5 |
| Molybdenum (Mo) | 0.30 – 0.60 |
| Tungsten (W) | 1.50 – 2.00 |
| Vanadium (V) | 0.18 – 0.25 |
| Niobium (Nb) | 0.06 – 0.10 |
| Nitrogen (N) | 0.030 – 0.070 |
| Boron (B) | 0.001 – 0.006 |
| Iron (Fe) | Balance |
ASTM A213 T92 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (min) | 620 MPa |
| Yield Strength (min) | 440 MPa |
| Elongation | 20% |
| Hardness (HBW) | ≤ 250 |
| Creep Resistance | Exceptional long-term performance |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.80 g/cm³ |
| Melting Point | ~1400–1520°C |
| Thermal Conductivity | 24.0 W/m·K |
| Coefficient of Expansion | 11.6 × 10⁻⁶ /°C |
| Modulus of Elasticity | 215 GPa |
Types of T92 Tubes
- Hot Finished Seamless Tubes
- Cold Drawn Seamless Tubes
- High-Pressure Boiler Tubes
- Superheater & Reheater Tubes
- Heat Exchanger Tubes
- U-Bend Tubes
- Custom Fabricated Tubes
Applications
- Ultra-Supercritical Power Plants
- Superheaters & Reheaters
- High-Pressure Boilers
- Steam Generators
- Refineries
- Petrochemical Industry
- Thermal & Nuclear Plants
- Chemical Processing Plants
- Heat Exchangers & Pressure Systems
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