UNS S32760 (Super Duplex 1.4501) – Premium Corrosion‑Resistant Alloy for Sour Service
UNS S32760 (F55 / 1.4501) is listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 7.81 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Charpy impact energy, V-notch | -40.0 °C | 35 J | min. |
23.0 °C | 80 J | min. | |
Elastic modulus | 23.0 °C | 199 GPa | |
Elongation | 23.0 °C | 25 % | min. |
Hardness, Brinell | 23.0 °C | 270 [-] | max. |
Reduction of area | 23.0 °C | 45 % | min. |
Tensile strength | 23.0 °C | 750 MPa | min. |
Yield strength Rp0.2 | 23.0 °C | 550 MPa | min. |
Magnetic
| Property | Temperature | Value |
|---|---|---|
Relative magnetic permeability | 23.0 °C | 33 [-] |
Chemical properties
| Property | Value | Comment | |
|---|---|---|---|
Carbon | 0.03 % | max. | |
Chromium | 24 - 26 % | ||
Copper | 0.5 - 1 % | ||
Iron | Balance | ||
Manganese | 1 % | max. | |
Molybdenum | 3 - 4 % | ||
Nickel | 6 - 8 % | ||
Nitrogen | 0.2 - 0.3 % | ||
Phosphorus | 0.03 % | max. | |
Silicon | 0.01 % | max. | |
Sulfur | 0.01 % | max. | |
Tungsten | 0.5 - 1 % | ||
Technological properties
| Property | ||
|---|---|---|
| Application areas | Providing higher strengths than both austenitic and 22% Cr Duplex Stainless Steels UNS S32760 (F55) is suited to a variety of applications in industries such as Oil & Gas, CPI(Chemical Processing Industries), and Marine environments. | |
| Corrosion properties | Super Duplex S32760/ F55 , Super Duplex Alloy UNS S32760 (F55 / 1.4501) has excellent resistance Pitting and Crevice Corrosion in seawater at elevated temperatures, supplied with a PREN 40<( Pitting Resistance Eqv) . Excellent resistance to SCC ( Stress Corrosion Cracking) in Sour and Chloride environments | |
| Other | The material comes with a 3.1 certification. 3.2 certification are available with surcharge. | |
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