| 摘要 |
Provided is an Ni-saving type duplex stainless steel material which exhibits excellent gas desorption characteristics and can substitute for austenitic stainless steel. The duplex stainless steel material is characterized by: containing, by mass, 0.06% or less of C, 0.05 to 1.5% of Si, 0.5 to 10.0% of Mn, 0.05% or less of P, 0.010% or less of S, 0.1 to 5.0% of Ni, 18.0 to 25.0% of Cr, 0.05 to 0.30% of N, and 0.001 to 0.05% of Al; and having a hydrogen content of 3ppm or less, the balance being Fe and unavoidable impurities. |
