SUPER DUPLEX S32760 / F55 / 1.4501
Business Unit Manager Medical, Aerospace, Industry
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 .
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.
UNS S32760 (F55 / 1.4501) is listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications.
| Alloy | Super Duplex S32760 |
|---|---|
| Material No. | 1.4501 |
| EN symbol (short) | X2CrNiMoCuWN25-7-4 |
| UNS | UNS S32760 |
| Registered work label | ASTM A182/ F55 |
Chemical composition of 1.4501
| Element | % |
|---|---|
| C | 0.030 max |
| Cr | 24-26 |
| Cu | 0.5-1.0 |
| Fe | Remainder |
| Mo | 3.0-4.0 |
| Mn | 1.0 max |
| N | 0.20-0.30 |
| Ni | 6.0-8.0 |
| P | 0.030 max |
| S | 0.010 max |
| Si | 0.010 max |
| W | 0.50-1.0 |
Special properties
| Youngs Modulus N/mm2 | Density kg/dm³ | Magnetic Permeability |
|---|---|---|
| 199 x 10³ | 7.81 g/cm³ | 33 |
Excellent Resistance to pitting and crevice/erosion corrosion
Specifications
- EN 10088-3 1.4501
- ASTM A473 UNS S32760 Forgings
- ASTM A182 Grade F55 UNS S32760 Forged Flanges
- ASTM A240 UNS S32760 Sheet and Plate
- ASTM A479 UNS S32760 Bar
- ASTM A276 UNS S32760 Condition A
- NACE MR 01-75
The material comes with a 3.1 certification. 3.2 certifications are available with surcharge.
Mechanical properties
| Property | Value |
|---|---|
| 0.2% Proof Stress (N/mm2 ) [ksi] minimum | 550 [79.8] |
| Ultimate Tensile Strength (N/mm2) [ksi] minimum | 750 [108.8] |
| Elongation (%) minimum | 25 |
| Hardness (HBN) | 270 max |
| Reduction of Cross Section Area (%) minimum | 45 |
| Charpy V-notch Impact at ambient Temp (J) [ft.lb] | 80 min [59 min] |
| Charpy V-notch Impact at -46°C (J) [ft.lb] | 45 av, 35 min [33 av, 25.8 min] |
Delivery program
Various sizes and tolerances available upon request.
