General Description
Super Duplex S32750 is with 25% chromium, 4% molybdenum and 7% nickel, designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipments. UNS S32750 has excellent resistance to chloride stress corrosion and high thermal conductivity, with a low coefficient of thermal expansion. It also has outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with critical pitting temperature exceeding 50°C.
F53 can be used in applications such as oil and gas industry equipments, offshore platforms, chemical process industries, desalination plants, mechanical and structural components, power industry FGD systems and so on.
Chemical Composition
| Grade | Ni% | Cr% | Fe% | Mo% | N% | C% | Mn% | Si% | S% | P% | Cu% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| F53 | 6.0-8.0 | 24.0-26.0 | Bal. | 3.0-5.0 | 0.24-0.32 | Max 0.03 | Max 1.2 | Max 0.8 | Max 0.02 | Max 0.035 | Max 0.5 |
Designations
UNS S32750
ASTM F53
Werkstoff Nr. 1.4410
Specifications
F53 Bar/Forging: ASTM A276/A479
F53 Sheet/Plate: ASTM A240
F53 Pipe/Tube: ASTM A790
Physical Properties
Density：7.8 g/cm3
Mechanical Properties
Solution Annealed
Tensile: Min 750 MPa
Yield: Min 550 MPa
Elongation: Min 25%