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Product Overview
Super Duplex Zeron 100 (UNS S32760) is a high-alloy Super Duplex stainless steel with a Pitting Resistance Equivalent Number (PREN) of >40. It is characterized by its 25% Chromium, 7% Nickel, and 3.5% Molybdenum content, but what sets it apart is the addition of Copper and Tungsten. This unique chemistry provides exceptional resistance to pitting and crevice corrosion in hot seawater and aggressive acidic environments. S32760 exhibits high mechanical strength and excellent ductility. It is highly resistant to stress corrosion cracking (SCC) in both chloride and sour environments. Steel Emporium supplies UNS S32760 pipes and tubes for the most demanding offshore, subsea, and chemical applications.
Key Advantages & Features
Max Pitting Resistance
PREN >40 ensures superior resistance to localized corrosion in warm seawater.
Enhanced Acid Resistance
Tungsten and Copper additions provide better stability in various mineral acids.
Extreme Strength
Offers nearly double the yield strength of standard austenitic 316L pipes.
| Grade | C | Cr | Ni | Mo | N | Cu | W | P | S |
|---|---|---|---|---|---|---|---|---|---|
| UNS S32760 | 0.03 max | 24.0-26.0 | 6.0-8.0 | 3.0-4.0 | 0.20-0.30 | 0.50-1.00 | 0.50-1.00 | 0.030 | 0.010 |
| Property | Minimum Value (Zeron 100) |
|---|---|
| Tensile Strength (MPa) | 750 MPa (109 ksi) |
| Yield Strength 0.2% Offset (MPa) | 550 MPa (80 ksi) |
| Elongation (% in 50mm) | 25% min |
| Hardness (Rockwell C) | 28 HRC max |
| PREN (Cr + 3.3Mo + 16N) | 40.0 min |
| Density (kg/m³) | 7810 |
| UNS | Werkstoff No. | EN Name | Common Name |
|---|---|---|---|
| S32760 | 1.4501 | X2CrNiMoCuWN25-7-4 | Zeron 100 / F55 |
Industrial Applications
Subsea Exploration
Deepwater oil & gas umbilicals and risers.
Desalination
Multi-stage flash (MSF) and RO plants.
FGD Systems
Scrubbers for flue gas desulfurization.
Chemical Process
Equipment handling sulfuric & nitric acids.
Marine Propulsion
Propeller shafts and boat fittings.
Refineries
Distillation columns & sour gas lines.