ASTM A213 TP310 (UNS S31000) Seamless Stainless Steel Tubes
ASTM A213 TP310 (UNS S31000) seamless stainless steel tubes are high-temperature austenitic alloy tubes designed for excellent resistance to oxidation, corrosion, and scaling at elevated temperatures. These tubes are extensively used in furnaces, heat exchangers, boilers, and high-temperature processing equipment due to their superior chromium-nickel composition.
Engineered for harsh industrial environments, TP310 tubes deliver outstanding strength, thermal stability, and long service life. Their resistance to carburization and sulfidation makes them ideal for petrochemical and heat treatment applications.
Key Features
- Excellent oxidation resistance up to 1100°C
- High chromium & nickel content for superior corrosion performance
- Outstanding strength at elevated temperatures
- Resistance to carburization and sulfidation
- Ideal for high-temperature, high-pressure environments
- Smooth surface finish ensuring efficient fluid flow
- Available in seamless, welded, ERW & precision-drawn forms
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| UNS | S31000 |
| Werkstoff Nr. | 1.4841 |
| EN | X15CrNi25-20 |
| JIS | SUS310 |
| BS | 310S16 / 310S24 (Approx.) |
| GOST | 20Ch23N18 |
| AFNOR | Z12CN25-20 |
Available Sizes
- Outside Diameter: 6 mm to 101.6 mm
- Wall Thickness: 0.5 mm to 50 mm
- Length: Up to 12 meters (custom available)
- Forms: Straight tube, U-bend tube, Coiled tube
ASTM A213 TP310 Chemical Composition
| Element | % Composition |
|---|---|
| C | 0.25 max |
| Mn | 2.00 max |
| Si | 1.50 max |
| P | 0.045 max |
| S | 0.030 max |
| Cr | 24.0 – 26.0 |
| Ni | 19.0 – 22.0 |
| N | 0.10 max |
| Fe | Balance |
ASTM A213 TP310 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa min |
| Yield Strength (0.2% Proof) | 205 MPa min |
| Elongation | 35% min |
| Hardness (Brinell) | 192 max |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.98 g/cm³ |
| Melting Range | 1400–1450°C |
| Thermal Conductivity | 14.2 W/m·K @ 100°C |
| Electrical Resistivity | 0.78 µΩ·m @ 20°C |
| Coefficient of Expansion | 15.9 µm/m°C (20–100°C) |
Types ASTM A213 TP310 Tubes
- Seamless Stainless Steel Tubes
- Welded Tubes
- ERW Tubes
- Cold-Drawn Tubes
- Heat Exchanger Tubes
- U-Tube / Boiler Tubes
- Capillary Tubes
- Polished Tubes (180, 240, 320, 600 Grit)
Applications
- Heat Exchangers
- Boilers & Superheaters
- Petrochemical Processing
- Furnace Components
- Thermal Power Plants
- Refineries & Chemical Plants
- Heat Treatment Equipment
- High-Temperature Gas Lines
- Aerospace & Industrial Heating Systems
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