Seamless Stainless Steel TP316 |UNS S31600|1.4401 Pipe
Distinguished by its strategic Molybdenum content (2.0–3.0%) and high Nickel/Chromium ratio, our TP316 tubing provides significantly enhanced resistance to pitting and crevice corrosion compared to standard 304 grades. These pipes are indispensable for mission-critical applications in offshore oil & gas, chemical reactors, and pharmaceutical processing. Through advanced cold-drawing and precise solution annealing, we ensures every pipe maintains a stable austenitic microstructure and optimized durability for the most demanding global industrial needs.
"For applications involving extensive welding, we also provide TP316L (UNS S31603) with lower carbon content to prevent sensitization and maintain intergranular corrosion resistance."
Seamless Stainless Steel TP316 Pipe (TP316 / UNS S31600 / W.Nr. 1.4401) is the molybdenum-bearing austenitic workhorse, offering improved pitting and crevice corrosion resistance. 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 A312 / ASME SA312 — Seamless & Welded
- ASTM A999 / A999M — General Requirements
- ASTM A213 / ASME SA213 — Seamless
- 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 mm – 1016 mm (1/4"– 40") | 0.5 mm – 65 mm | 6 m / 12 m, or as required |
Chemical Composition
TP316 (UNS S31600) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| S31600 | ≤ 0.08 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | ≤ 1.00 | 16.0 – 18.0 | 10.0 – 14.0 | 2.00 – 3.00 |
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 | 8.0 g/cm3 |
| Thermal Conductivity | 16.3 W/m·K |
| Specific Heat Capacity | 500 J/kg·K |
| Elastic Modulus | 193 GPa |
| Magnetic Properties | Non-magnetic (slightly magnetic when cold worked) |
| PREN (Pitting Resistance Equivalent) | 24.0-26.0 |
Industry Applications
Related Products
Related Seamless Pipes & Tubes
Explore more grades and sizes from XTD Special Steel — related seamless pipe and tube products:
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- Seamless Stainless Steel TP317 Pipe
- Seamless Stainless Steel TP317L Pipe
- Seamless Stainless Steel TP316Ti Pipe
- Seamless Stainless Steel TP309 Pipe
- Seamless 254SMO/31254 Pipe
Browse the complete ranges: All Stainless Steel Pipes | Explore Stainless Steel Tubes
CONTACT US
Lidun Industrial Park, Lidun Town, Zhouning County, Ningde City, Fujian Province，355400，China
+86-577-88877003
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+86-577-88877019
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