SUPER DUPLEX S32760 / F55 / 1.4501
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.
Material Data Sheet
| 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
| C | Cr | Cu | Fe | Mo | Mn |
|---|---|---|---|---|---|
| % | ≤ % | ≤ % | % | % | |
| 0.030 max | 24<26 | 0.5<1.0 | Reminder | 3.0<4.0 | 1.0 max |
| N | Ni | P | S | Si | W |
| % | % | % | % | ≤ % | % |
| 0.20<0.30 | 6.0<8.0 | 0.030 max | 0.010 max | 0.010 max | 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 certification are available with surcharge.
Mechanical Properties
| 0.2% Proof Stress (N/mm2 ) [ksi] minimum 550 | 550 [79.8] |
|---|---|
| Ultimate Tensile Strength (N/mm2) [ksi] minimum | 750 [108.8]] |
| Elongation (%) minimum | 25 |
| Hardness (HBN) | 270max |
| Reduction of Cross Section Area (%) minimum | 45 |
| Charpy V-notch Impact at ambient Temp (J) [ft.lb] | 80min [59min] |
| Charpy V-notch Impact at -46°C (J) [ft.lb] | 45av, 35min [33av, 25.8min] |