Super duplex 2507 vs Super duplex S32760
Super duplex 2507 (UNS S32750) vs Super duplex S32760 (UNS S32760): chemical composition and mechanical properties side by side.
- Strength: Super duplex S32760 minimum yield is 550 MPa vs 550 MPa for Super duplex 2507 (+0%); tensile 750 vs 795 MPa.
- Density: 7.8 vs 7.8 g/cm³ — same weight for the same dimensions.
- Pitting resistance (PREN, min): 37.7 vs 37.1 — higher for Super duplex 2507.
- Typical use: Super duplex 2507 — High strength, PREN > 40. Super duplex S32760 — W/Cu-bearing super duplex (Zeron 100).
| Property | Super duplex 2507 | Super duplex S32760 |
|---|---|---|
| Family | Super duplex | Super duplex |
| UNS | S32750 | S32760 |
| EN / W.Nr | 1.4410 X2CrNiMoN25-7-4 | 1.4501 X2CrNiMoCuWN25-7-4 |
| Basis spec | ASTM A240 | ASTM A240 |
| Density g/cm³ | 7.8 | 7.8 |
| Chemical composition, % | ||
| C | 0.030 | 0.030 |
| Mn | 1.20 | 1.00 |
| P | 0.035 | 0.030 |
| S | 0.020 | 0.010 |
| Si | 0.80 | 1.00 |
| Cr | 24.0–26.0 | 24.0–26.0 |
| Ni | 6.0–8.0 | 6.0–8.0 |
| Mo | 3.0–5.0 | 3.0–4.0 |
| N | 0.24–0.32 | 0.20–0.30 |
| Cu | 0.50 | 0.50–1.00 |
| W | – | 0.50–1.00 |
| Mechanical properties (min) | ||
| Tensile strength | 795 MPa (115 ksi) | 750 MPa (109 ksi) |
| Yield strength (0.2%) | 550 MPa (80 ksi) | 550 MPa (80 ksi) |
| Elongation | 15% | 25% |
| Hardness (max) | 310 HB | 270 HB |
| PREN (min, from spec) | 37.7 | 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 difference between Super duplex 2507 and Super duplex S32760?
Strength: Super duplex S32760 minimum yield is 550 MPa vs 550 MPa for Super duplex 2507 (+0%); tensile 750 vs 795 MPa. Density: 7.8 vs 7.8 g/cm³ — same weight for the same dimensions. Pitting resistance (PREN, min): 37.7 vs 37.1 — higher for Super duplex 2507.
Which is stronger, Super duplex 2507 or Super duplex S32760?
Super duplex 2507 has the higher minimum yield strength (550 MPa vs 550 MPa).
Last updated 2026-11-02