ASTM A213 T11 Alloy Steel Pipes
ASTM A213 T11 alloy steel pipes (UNS K11597) are seamless ferritic alloy steel tubes designed for high-temperature applications such as boiler systems, superheaters, and heat exchangers. Their enhanced chromium-molybdenum composition offers excellent creep strength, oxidation resistance, and long-term performance in elevated temperature environments. These pipes are widely used in power generation, petrochemical, and refinery industries.
Key Features
- Excellent thermal stability for high-temperature operations
- Superior creep strength and mechanical durability
- Outstanding oxidation and corrosion resistance
- Seamless construction ensures leak-free performance
- Ideal for boilers, superheaters, and heat exchangers
Specification
| Property | Details |
|---|---|
| Standard | ASTM A213 / ASME SA213 |
| Grade | T11 |
| UNS Number | K11597 |
| Product Type | Seamless Ferritic Alloy Steel Pipes |
| Manufacturing Process | Cold Drawn / Hot Finished |
| Surface Finish | Annealed / Bright Annealed |
| Ends | Plain / Beveled |
| Length | Single, Double & Custom |
| Size Range | 1/4″ to 24″ NPS |
Equivalent Grades
- UNS K11597
- WNR 1.7338
- DIN 13CrMo4-5
- BS 3604 Grade 621
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 T11 Material Composition
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.05 – 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | 0.50 – 1.00 |
| Chromium (Cr) | 1.00 – 1.50 |
| Molybdenum (Mo) | 0.44 – 0.65 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 179 HB |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.70 g/cm³ |
| Thermal Conductivity | 40 W/m·K |
| Modulus of Elasticity | 200 GPa |
| Melting Point | 1425–1510 °C |
Types ASTM A213 T11 Pipe
- Seamless Alloy Steel Pipes
- Boiler Tubes
- Superheater Tubes
- Heat Exchanger Tubes
Application
- Power Plants
- Boiler Systems
- Superheater Units
- Heat Exchanger Equipment
- Petrochemical Processing
- Refinery Operations
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