Seamless Stainless Steel TP314 |UNS S31400|1.4841 Tube
We leverage decades of metallurgical expertise to provide export-grade seamless pipes in a wide range of schedules and customizable dimensions tailored to project-specific requirements. Backed by full traceability (MTRs) and international certifications, Tengqi ensures the reliability of every order through stringent Non-Destructive Testing (NDT), including Ultrasonic and Eddy Current inspections. Request a quote today to benefit from our factory-direct pricing and comprehensive technical support on premium TP314 stainless steel solutions.
"While TP310S is highly resistant to oxidation, TP314 provides superior scale adhesion and resistance to carburization due to its higher silicon content, making it the preferred choice for fluctuating thermal cycles."
Seamless Stainless steel TP314 tube (TP314 / UNS S31400 / W.Nr. 1.4841) is a high-silicon austenitic grade for severe high-temperature oxidation and carburizing environments. 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
TP314 (UNS S31400) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni |
|---|---|---|---|---|---|---|---|
| S31400 | ≤ 0.25 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 1.50 – 3.00 | 23.0 – 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 | 7.8 g/cm3 |
| Thermal Conductivity | 15.0 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) | 25.0-28.0 |
Industry Applications
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- Seamless Stainless Steel TP316Ti Tube
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Browse the complete ranges: All Stainless Steel Tubes | Explore Stainless Steel Pipes
CONTACT US
Lidun Industrial Park, Lidun Town, Zhouning County, Ningde City, Fujian Province，355400，China
+86-577-88877003
+86-577-88877015
+86-577-88877019
+86 13587686960
info@xtd-ss.com
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