| 摘要 |
A stainless steel having an optimal low chromium content is provided in which a weld formed by multipass welding is prevented from deteriorating in corrosion resistance by martensitic transformation and the weld has excellent resistance to intergranular corrosion even in a severe corrosive environment. The heat-affected zones, which adjoin the bonded area, suffer no preferential corrosion. The stainless steel has excellent manufacturability. The low-chromium-content stainless steel contains, in terms of mass%, 0.015-0.025% C, 0.008-0.014% N, 0.2-1.0% Si, 1.0-1.5% Mn, up to 0.04% P, up to 0.03% S, 10-13% Cr, 0.2-1.5% Ni, and 0.005-0.1% Al and further contains Ti in an amount of 6×(C%+N%) to 0.25%, with the remainder comprising Fe and incidental impurities, the contents of the elements satisfying given relationships. |
