| 摘要 |
PROBLEM TO BE SOLVED: To provide a ferritic stainless steel in which deterioration in workability caused by coarse grains is prevented in the weld zone of ferritic stainless steel and excellent in weldability. SOLUTION: This ferritic stainless steel excellent in weldability has a layer structure consisting of two or more kinds of compositions containing, by mass, 0.0005 to 0.08% C, 0.01 to 1% Si, 0.01 to 1% Mn, <0.04% P, 0.0001 to 0.01% S, 10 to 25% Cr, 0.0005 to 0.08% N and 0.0005 to 0.01% Mg, furthermore containing one or two kinds of 0.01 to 0.8% Ti and 0.005 to 0.2% Al, and the balance inevitable impurities, also containing one or two kinds of Ti and Al and Mg and containing oxides with the grain size of 0.05 to 5μm by a distribution density of >=3 pieces/mm2 in the steel.
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