Seamless Super Duplex Steel S32950 |UNS S32950|1.4655 Tube
Designed for superior performance in chloride-rich media, our S32950 super duplex tubes provide exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC). These tubes deliver a strategic combination of high tensile and yield strength alongside remarkable impact toughness, making them the optimal choice for high-pressure heat exchangers, desalination infrastructure, and offshore platforms. Through advanced cold-drawing and specialized solution annealing, Tengqi ensures every tube maintains optimal phase balance and a high-integrity surface finish for mission-critical reliability.
"Our S32950 tubes offer an optimized PREN value that ensures exceptional durability in brackish water and industrial chemical media."
Seamless Super Duplex Steel S32950 Tube (S32950 / UNS S32950 / W.Nr. 1.4655) is a high-chromium super duplex grade with excellent resistance to chloride pitting and erosion. 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 A789 / ASME SA789 — Seamless & Welded
- ASTM A790 / ASME SA790 — Seamless Pipe
- ASTM A1016 / A1016M — General Requirements
- 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
S32950 (UNS S32950) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| S32950 | ≤ 0.030 | ≤ 2.00 | ≤ 0.035 | ≤ 0.010 | ≤ 0.60 | 26.0 – 29.0 | 3.5 – 5.2 | 1.00 – 2.50 | 0.15 – 0.35 |
Mechanical Properties
| Property | Value |
|---|---|
| Delivery Condition | Solution annealed, pickled & polished |
| Tensile Strength | ≥ 690 MPa |
| Yield Strength (0.2% offset) | ≥ 480 MPa |
| Elongation in 2 in. / 50 mm | ≥ 20% |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.8 g/cm3 |
| Thermal Conductivity | 17.0 W/m·K |
| Specific Heat Capacity | 480 J/kg·K |
| Elastic Modulus | 200 GPa |
| Magnetic Properties | Magnetic |
| PREN (Pitting Resistance Equivalent) | 38.0-42.0 |
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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