Seamless Super Duplex Steel S32760 |UNS S32760|1.4501 Pipe
Designed for the most aggressive environments, our S32760 pipes feature an exceptionally high Pitting Resistance Equivalent Number (PREN ≥ 41). This ensures unmatched resistance to pitting and crevice corrosion in hot seawater and sour gas (H2S) services. The addition of tungsten and copper provides critical stability in both organic and inorganic acids, making it the optimal choice for desalination, offshore oil & gas, and subsea infrastructure. Through advanced cold-drawing and precise solution annealing, Tengqi guarantees optimal phase balance and maximum mechanical strength for mission-critical industrial applications.
PREN =%Cr + 3.3X(%Mo + 0.5X%W) + 16X%N≥ 41
Seamless Super Duplex Steel UNS S32760 Pipe (S32760 / UNS S32760 / W.Nr. 1.4501) is a tungsten-bearing super duplex grade with a PREN above 40 for sour and seawater service. 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 A790 / ASME SA790 — Seamless & Welded
- ASTM A999 / A999M — 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 mm – 1016 mm (1/4"– 40") | 0.5 mm – 65 mm | 6 m / 12 m, or as required |
Chemical Composition
S32760 (UNS S32760) — Composition %
| UNS | C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu | W |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S32760 | ≤ 0.030 | ≤ 1.00 | ≤ 0.030 | ≤ 0.010 | ≤ 1.00 | 24.0 – 26.0 | 6.0 – 8.0 | 3.0 – 4.0 | 0.20 – 0.30 | 0.50 – 1.00 | 0.50 – 1.00 |
Mechanical Properties
| Property | Value |
|---|---|
| Delivery Condition | Solution annealed, pickled & polished |
| Tensile Strength | ≥ 750 MPa |
| Yield Strength (0.2% offset) | ≥ 550 MPa |
| Elongation in 2 in. / 50 mm | ≥ 25% |
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) | ≥ 40.0 |
Industry Applications
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