Super duplex Zeron 100 (UNS S32760)
Super duplex Zeron 100 (UNS S32760) — Tungsten/copper-bearing super duplex for offshore and desalination service.
| UNS number | S32760 |
| Material family | Super duplex |
| Product specifications | A182 F55, A815, A790 |
| Density (typical) | 7.8 g/cm³ (7800 kg/m³) |
| Weight of 6" Sch 40 pipe | 28.08 kg/m |
Specifications by product form
One alloy is ordered under different ASTM/ASME numbers depending on form: forged flanges and fittings, wrought buttweld fittings, and pipe or tube. For Super duplex Zeron 100 the usual specifications are A182 F55, A815, A790. Quote both the specification and the UNS number on purchase orders to avoid ambiguity.
Chemical and mechanical limits differ between these specifications — always check the edition of the standard named on your order and the mill test certificate.
Chemical composition & mechanical properties
| Property | Super duplex S32760 |
|---|---|
| Family | Super duplex |
| UNS | S32760 |
| EN / W.Nr | 1.4501 X2CrNiMoCuWN25-7-4 |
| Basis spec | ASTM A240 |
| Density g/cm³ | 7.8 |
| Chemical composition, % | |
| C | 0.030 |
| Mn | 1.00 |
| P | 0.030 |
| S | 0.010 |
| Si | 1.00 |
| Cr | 24.0–26.0 |
| Ni | 6.0–8.0 |
| Mo | 3.0–4.0 |
| N | 0.20–0.30 |
| Cu | 0.50–1.00 |
| W | 0.50–1.00 |
| Mechanical properties (min) | |
| Tensile strength | 750 MPa (109 ksi) |
| Yield strength (0.2%) | 550 MPa (80 ksi) |
| Elongation | 25% |
| Hardness (max) | 270 HB |
| PREN (min, from spec) | 37.1 |
Single values are maximums; ranges are min–max; "bal" = balance. Limits are typical of the basis specification for that product form — forgings, pipe and fittings specifications differ slightly. Always check the exact specification, edition and the mill test certificate.
Frequently asked questions
What is the UNS number of Super duplex Zeron 100?
S32760.
Which ASTM specifications cover Super duplex Zeron 100?
A182 F55, A815, A790.
What is the density of Super duplex Zeron 100?
About 7.8 g/cm³ (7800 kg/m³), used for weight calculations.
Last updated 2026-11-02