Super Duplex UNS S32750 / EN 1.4410 / F53 is a super duplex stainless steel known for its excellent mechanical properties and corrosion resistance. It is characterized by a duplex microstructure that combines high strength with excellent resistance to stress corrosion, pitting and crevice corrosion, especially in chloride-containing environments.
Main applications include harsh environments in the marine and chemical fields, such as submarine pipelines, heat exchangers in desalination plants, desalination equipment, and high-chloride media treatment systems in the oil and gas industry.
| C | Mn | Si | P | S | Cr | Ni | Mo | N | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min. | . | . | . | . | . | 24.00 | 6.00 | 3.00 | 0.24 | Bal. |
| Max. | 0.03 | 1.20 | 0.80 | 0.035 | 0.02 | 26.00 | 8.00 | 5.00 | 0.32 | Bal. |
Condition: Solution Annealed and Water Quenched
| Grade | Yield Strength | Tensile Strength | Elongation(%) | Hardness(HRC) | |
|---|---|---|---|---|---|
| Min | Max | ||||
| 80 | 80KSI (517Mpa) | 105KSI (517Mpa) | ≥110KSI (621Mpa) | 20 | ≤28 |
| 90 | 90KSI (517Mpa) | 105KSI (689Mpa) | ≥115KSI (621Mpa) | 20 | ≤30 |
| 110 | 110KSI (758Mpa) | 140KSI (965Mpa) | ≥125KSI (862Mpa) | 12 | ≤36 |
| 125 | 125KSI (862Mpa) | 145KSI (1000Mpa) | ≥130KSI (896Mpa) | 10 | ≤36 |