UNS S31803/2205 is a duplex stainless steel renowned for its ferritic-austenitic microstructure, consisting of approximately 40-50% ferrite in the annealed state. This unique duplex microstructure combines the high strength of ferritic grades with the corrosion resistance of austenitic grades, making it an effective solution for chloride-induced stress cracking, a common challenge in stainless steel applications. It offers superior resistance to chloride pitting and crevice corrosion compared to 317L stainless steel and demonstrates exceptional corrosion resistance to seawater and various concentrations of sulphuric acid. Additionally, it withstands sulphide stress corrosion cracking in sour-gas environments, thanks to its high chromium, nitrogen, and molybdenum content, which contribute to its overall quality and performance.
| Attribute | Details |
|---|---|
| Grade | UNS S31803/2205 |
| Microstructure | Ferritic-austenitic |
| Ferrite Content | Approximately 40-50% in annealed condition |
| Size Range | From 1/8″ through to 64” Nominal Bore |
Reviews
Clear filtersThere are no reviews yet.