Seamless Super Duplex Steel S32760 |UNS S32760|1.4501 Tube
Featuring an exceptionally high Pitting Resistance Equivalent Number (PREN ≥ 41), our S32760 tubes provide superior resistance to pitting and crevice corrosion in aggressive chloride environments. The addition of tungsten and copper enhances its stability in both organic and inorganic acids, making it a superior choice for sour gas (H2S) services, desalination, and subsea infrastructure. Through advanced cold-drawing and precise solution annealing, Tengqi ensures every tube maintains optimal phase balance and unmatched mechanical strength, even in the most demanding offshore applications.
PREN =%Cr + 3.3X(%Mo + 0.5X%W) + 16X%N≥ 41
Seamless Super Duplex Steel S32760 Tube (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 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
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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