Welding performance of duplex stainless steel

Dual phase stainless steel has good welding performance. Compared with ferritic stainless steel and austenitic stainless steel, it is not like the welding heat affected zone of ferritic stainless steel. Due to severe grain coarsening, the plasticity and toughness are greatly reduced, and it is not as sensitive to welding heat cracks as austenitic stainless steel.
Due to its special advantages, duplex stainless steel is widely used in industrial fields such as petrochemical equipment, seawater and wastewater treatment equipment, oil and gas pipelines, papermaking machinery, etc. In recent years, it has also been studied and used in the field of bridge load-bearing structures, with good development prospects.