Hyundai ST-2209 description:
Duplex stainless steel pipes, plates, fittings and forgings have an approximate 50:50 microstructure of austenite with a ferrite matrix.
Preheat not generally required. Interpass temperature 100 ~ 150C max, heat input in the range 0.5 ~ 1.5KJ/min - depending on material thickness.
Good general corrosion resistance in a range of environments.
High resistance to chloride induced stress corrosion cracking (CSCC).