TWO-PHASE STAINLESS STEEL WELDED JOINT

WIPO Patent Application WO/2022/210849

A1

Provided is a two-phase stainless steel welded joint that can suppress undercut and has superior fatigue characteristics. This two-phase stainless steel welded joint comprises: a parent material; and a weld metal that comprises, by mass%, C: 0.001%-0.030%, Si: 0.05%-0.70%, Mn: 0.05%-0.85%, P: 0.030% or less, S: 0.0030% or less, Cr: 21.00%-28.00%, Ni: 5.00%-11.00%, Mo: 2.00%-4.50%, Cu: 0.01-4.00%, Sol. Al: 0.0010-0.0500%, N: 0.080%-0.400%, and B: 0.0001-0.0100%, the remainder consisting of Fe and unavoidable impurities, wherein in addition to the respective contents of each of the elements in the weld metal and the parent material being satisfied, mathematical expression (1) and mathematical expression (2) are also satisfied.　(1): Si+3Mn≤3.00　(2): 0