| 摘要 |
The ferritic stainless steel of the present invention contain the following main chemical elements, in which a relationship between B and Gd, preferably, satisfies the following equation (1) on the weight % basis: - C: less than 0.01% Mn: not more than 1% - Ni: not more than 0.7% Cr: 13-26% - B: 0.1-1.1% Gd: 0.05-1.5% - Al: 0.002-0.1% N: not more than 0.015%. - The austenitic stainless steel of the present invention contain the following main chemical elements, in which a relationship between B and Gd, preferably, satisfies the following equation (1) on the weight % basis: - C: not more than 0.02% Mn: 0.1-0.9% - Ni: 7-22% Cr: 18-26% - B: 0.05-0.75% Gd: 0.11-1.5% - Al: 0.005-0.1% N: not more than 0.03%. - The stainless steel of the present invention described above are excellent in thermal neutron absorption ability, as well as are excellent in the workability such as hot workability and cold workability, and the corrosion resistance, particularly, the corrosion resistance for HAZ and are inexpensive for the manufacturing cost.
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