| 摘要 |
Disclosed is a steel material for welding, which consists of, in mass%, not more than 0.3% of C, not more than 0.5% of Si, 0.3-2% of Mn, not more than 0.03% of P, not more than 0.03% of S, 0.3-5% of Al, 0.003-0.01% of O, not more than 0.006% of N, and the balance made up of Fe and unavoidable impurity elements. Aluminum-containing oxides in sizes of 0.005-0.05 µm are dispersed in the steel at a density of not less than 1 × 106 pieces/mm2.
|
