Ferrite / Austenitic two-phase stainless steel plate for tank band, tank band using the same, and spot welding method

摘要

To provide a ferritic/austenitic duplex stainless steel sheet having such an excellent spot weldability that a nugget shape and strength during spot welding are secured, and a tank band using the ferritic/austenitic duplex stainless steel sheet, and a proper welding method.SOLUTION: The ferritic/austenitic duplex stainless steel sheet for a tank band is provided that contains C:0.001 to 0.05%, Si:0.01 to 1.0%, Mn:2 to 5%, P≤0.05%, S≤0.005%, Ni:0.1 to 6.0%, Cr:15.0 to 23.0%, Mo:0.01 to 1.0%, Cu:0.01 to 2.0%, N:0.005 to 0.30%, B:0.0005 to 0.0100%, Al:0.01 to 0.5%, V:0.01 to 0.50%, Ca:0.0002 to 0.0100%, O:0.0001 to 0.0100%, Mg:0.0002 to 0.0100%, and has an electrical resistivity of 0.7 μΩm or more.SELECTED DRAWING: Figure 3