Seamless Stainless Steel TP310S |UNS S31008|1.4845 Tube
Tengqi is a premier manufacturer and global exporter of TP310S (UNS S31008) seamless stainless steel tubes, headquartered in Fujian, China. As a low-carbon version of the 310 alloy, TP310S is specifically engineered to provide superior oxidation resistance and structural integrity in continuous service temperatures up to 1035°C (1900°F).
Our SS 310S seamless tubing is manufactured using advanced cold-drawing and cold-rolling processes to meet the most stringent international standards, including ASTM A213, ASTM A269, and EN 10216-5. By controlling the carbon content, we ensure our tubes offer enhanced weldability and resistance to intergranular corrosion, making them the ideal choice for high-heat industrial infrastructure.
Technical Specifications: TP310S (UNS S31008 / 1.4845)
TP310S features a high Chromium (25%) and Nickel (20%) composition, providing a stable austenitic structure and excellent resistance to thermal fatigue.
Technical Parameter Specification & Range
Outer Diameter (OD) 6.0mm to 508mm
Wall Thickness (WT) 0.5mm to 40mm (SCH 10S - SCH XXS)
Standard Compliance ASTM A213 (Exchanger), ASTM A312 (Pipe), DIN 17458
Surface Finish Solution Annealed & Pickled (AP), Bright Annealed (BA), Polished
Testing 100% Hydrostatic, Eddy Current, PMI, and Grain Size Testing
Key Performance Benefits of Tengqi TP310S Tubes
• Superior Oxidation Resistance: The high chromium content allows for the formation of a protective, adherent oxide scale in oxidizing environments.
• Low Carbon Advantage: Specifically designed to minimize carbide precipitation during welding or high-temperature exposure, preventing sensitization.
• Resistance to Sulfidation: Excellent performance in moderately carburizing and sulfidizing atmospheres compared to lower-alloyed stainless steels.
• High-Precision Manufacturing: Our Fujian facility ensures tight dimensional tolerances and superior internal surface
Seamless Stainless Steel TP310S tube (TP310S / UNS S31008 / W.Nr. 1.4845) is the low-carbon 25/20 grade, resisting oxidation and carburization up to 1100 °C. Manufactured by Tengqi in Fujian, China, every heat is fully traceable, hydro-tested and available with third-party inspection (SGS / BV / TUV) on request.
Product Specifications
- ASTM A213 / ASME SA213 — Seamless
- ASTM A269 / A269M — Seamless & Welded
- ASTM A270 / A270M — Sanitary Tubing
- ASTM A1016 / A1016M — General Requirements
- EN 10216-5 — Seamless Pressure Tubing
- Finishing: solution annealed, pickled & polished; bright annealed available on request
Size Range
| Outside Diameter (OD) | Wall Thickness | Length |
|---|---|---|
| 6.35 mm – 257 mm (1/4"– 10.1") | 0.5 mm – 12.7 mm | ≤ 22 m |
Chemical Composition
TP310S (UNS S31008) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni |
|---|---|---|---|---|---|---|---|
| S31008 | ≤ 0.08 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | ≤ 1.00 | 24.0 – 26.0 | 19.0 – 22.0 |
Mechanical Properties
| Property | Value |
|---|---|
| Delivery Condition | Solution annealed, pickled & polished |
| Tensile Strength | ≥ 515 MPa |
| Yield Strength (0.2% offset) | ≥ 205 MPa |
| Elongation in 2 in. / 50 mm | ≥ 35% |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.98 g/cm3 |
| Thermal Conductivity | 14.2 W/m·K |
| Specific Heat Capacity | 500 J/kg·K |
| Elastic Modulus | 200 GPa |
| Magnetic Properties | Non-magnetic (slightly magnetic when cold worked) |
| PREN (Pitting Resistance Equivalent) | 24.0-26.0 |
Industry Applications
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CONTACT US
Lidun Industrial Park, Lidun Town, Zhouning County, Ningde City, Fujian Province,355400,China
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