ASTM A213 TP310S Stainless Steel Tubes (UNS S31008)
ASTM A213 TP310S Stainless Steel Tubes (UNS S31008) are seamless austenitic stainless steel tubes engineered for high-temperature service, offering outstanding oxidation resistance, heat stability, and corrosion performance. TP310S is a low-carbon variant of TP310, making it more weldable while retaining excellent strength at elevated temperatures up to 1100°C.
These tubes are widely used in heat exchangers, boilers, furnace components, petrochemical units, and thermal processing systems, where high-temperature corrosion resistance is essential.
Key Features
- Excellent oxidation & scaling resistance up to 1100°C
- Superior corrosion resistance in carburizing & reducing atmospheres
- Low carbon content improves weldability
- High chromium & nickel levels for maximum heat resistance
- Strong performance in thermal cycling environments
- Ideal for continuous high-temperature industrial service
Equivalent Grade
| Standard | Grade |
|---|---|
| UNS | S31008 |
| EN / DIN | 1.4845 |
| JIS | SUS 310S |
| GB | 06Cr25Ni20 |
| BS | 310S |
| ISO | X8CrNi25-21 |
Available Sizes
- Outside Diameter: 6 mm to 114 mm
- Wall Thickness: 0.5 mm to 12 mm
- Length: 1–12 meters (custom lengths available)
- Forms: Straight, U-bend, Coil-form tubes
ASTM A213 TP310S Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.50 |
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 19.0 – 22.0 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
ASTM A213 TP310S Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 515 MPa |
| Yield Strength (0.2%) | ≥ 205 MPa |
| Elongation (%) | ≥ 40 |
| Hardness (HBW) | ≤ 192 |
| Creep Strength | Excellent for high-temperature service |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.9 g/cm³ |
| Melting Point | 1400–1450°C |
| Thermal Conductivity @100°C | 14.2 W/m•K |
| Electrical Resistivity | 0.78 μΩ•m |
| Modulus of Elasticity | 200 GPa |
| Coefficient of Expansion | 15.9 μm/m°C |
Types of ASTM A213 TP310S Tubes
- Seamless Tubes
- Heat Exchanger Tubes
- Superheater Tubes
- Boiler Tubes
- Reheater Tubes
- U-Bend Tubes
- Cold Drawn Tubes
- Polished Tubes (180–400 Grit)
Applications
- Industrial Furnaces & Kilns
- High-Temperature Boilers
- Heat Exchangers
- Thermal Processing Equipment
- Petrochemical & Refinery Plants
- Superheaters & Reheaters
- Burners, Manifolds & Exhaust Systems
- Power Generation Units
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