ASTM A213 T9 Alloy Steel Pipes
ASTM A213 T9 alloy steel pipes (UNS S50400) are seamless ferritic alloy steel tubes engineered for high-temperature service in boilers, heat exchangers, and superheater systems. With excellent creep strength, oxidation resistance, and thermal stability, T9 is widely preferred in power plant operations, petrochemical units, and refinery applications requiring long-term elevated temperature performance.
Key Features
- High creep strength for elevated-temperature service
- Excellent oxidation and corrosion resistance
- Seamless construction ensures durability and leak-free operation
- Superior thermal stability and pressure resistance
- Ideal for heat exchangers, boilers, and superheater tubing
Equivalent Grades
- UNS S50400
- WNR 1.7386
- DIN 10CrMo9-10
- BS 3604 Grade 620
Available Sizes
- Outside Diameter: 6 mm to 101.6 mm
- Wall Thickness: 1 mm to 12.7 mm
- Length: Up to 12 meters (custom lengths available)
ASTM A213 T9 Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.15 – 0.23 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | 0.20 – 1.00 |
| Chromium (Cr) | 8.00 – 10.00 |
| Molybdenum (Mo) | 0.90 – 1.10 |
ASTM A213 T9 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 179 HB |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.75 g/cm³ |
| Thermal Conductivity | 39 W/m·K |
| Modulus of Elasticity | 200 GPa |
| Melting Range | 1425–1510 °C |
Types
- Seamless Alloy Steel Pipes
- Boiler Tubes
- Superheater Tubes
- Heat Exchanger Tubes
Application
- Power Plants
- Boilers & Superheaters
- Heat Exchanger Systems
- Petrochemical Processing Units
- Refinery Operations
- High-Temperature Furnace Tubing
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