| 摘要 |
The present invention relates to a maraging steel containing, in terms of mass%, 0.10 ‰¤ C ‰¤ 0.35, 9.0 ‰¤ Co ‰¤ 20.0, 1.0 ‰¤ (Mo + W/2) ‰¤ 2.0, 1.0 ‰¤ Cr ‰¤ 4.0, a certain amount ofNi, a certain amount of A1, and V + Nb ‰¤ 0.60, with the balance being Fe and inevitable impurities, in which in a case of V + Nb ‰¤ 0.020, the amount of Ni is 6.0 ‰¤ Ni ‰¤ 9.4 and the amount of Al is 1.4 ‰¤ A1 ‰¤ 2.0, and in a case of 0.020 < V + Nb ‰¤ 0.60, the amount ofNi is 6.0 ‰¤ Ni ‰¤ 20.0 and the amount of Al is 0.50 ‰¤ A1 ‰¤ 2.0. |
