UNS S32750 F53
Excellent durability in highly corrosive conditions and widely used for valve manufacture in chemical processing and marine environments.
- Alloy 2507
- Werkstoffe number 1.4410
- UNS S32750
Fully certified materials
Additional testing available
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Duplex stainless steels are about twice as strong as regular austenitic or ferritic stainless steels, have significantly better toughness and ductility than ferritic grades (although they do not reach the values of austenitic grades), have a range of corrosion resistance comparable to the range for austenitic stainless steels, have very good stress corrosion cracking resistance.
The term “Super-Duplex” denotes high-performance Duplex steel based on elevated contents of chromium, nickel and molybdenum. These elements improve pitting corrosion resistance, while additions of nitrogen promoted structural hardening, raising the yield strength and ultimate strength values without impairing toughness.
UNS S32750 F53 Chemical Composition
| C | Cr | Fe | Mo | Mn | N | Ni | P | S | Si | |
| Min | - | 24 | Balance | 3 | - | 0.24 | 6 | - | - | - |
| Max | 0.03 | 26 | 4.5 | 2 | 0.35 | 8 | 0.02 | 0.015 | 1 |
UNS S32750 F53 Mechanical Properties
| Tensile Strength (Mpa/ N/ mm2) | 730-930 |
| 0.2% Proof Stress (MPa /N/mm2 ) minimum | 530 |
| Elongation (A5 & 4D) minimum | 23.00% |
| Hardness (HB) maximum | 290 |
| Charpy V-notch Impact at ambient Temp (J) | 100 minimum |
| Ultrasonic Testing | At customers request |
| Ferrite Content | 50.00% |
| Microstructure | Microstructure certified free from grain boundary carbides, sigma, chi and laves phases |
For more technical information download our F53 information sheet here
Applications:
F53’s excellent corrosion resistance, strength and ductility opens it to use in many environments, such as marine, food processing, pollution control, the oil and gas and pulp and paper industry.
End uses:
- Fasteners
- Valves
- Oil and chemical tankers
- Pumps
- Bleaching components
- Propellers
- Fans
- Fertiliser production
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