| 摘要 |
The present invention makes weld cracking less likely when laser-welding austenitic stainless steel using nitrogen gas as the shielding gas. This laser-welding material for austenitic stainless steel contains, in mass%, C in the amount of 0.01-0.08%, Si in the amount of 1.0% or less, Mn in the amount of 0.5-2.5%, P in the amount of 0.03% or less, S in the amount of 0.03% or less, Cr in the amount of 20.5-24.0%, Ni in the amount of 9.0-11.0%, and Ti in the amount of 0.1-1.0%, and is characterized by satisfying this formula. 1.45≤Cr*/Ni*=(%Cr+%Mo+1.5×%Si)/%Ni+30×%C+30×%N+0.5×%Mn≤2.20 |
