Patent ID: 11970758
Assignee: NIPPON STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 3:
4. The hot-rolled steel sheet according to claim 2,
wherein the hot-rolled steel sheet includes, as the chemical composition, by mass %, one or two or more selected from the group consisting of
Ti: 0.005% to 0.300%,
V: 0.005% to 0.500%,
Cu: 0.01% to 2.00%,
Cr: 0.01% to 2.00%,
Mo: 0.010% to 1.000%,
Ni: 0.02% to 2.00%,
B: 0.0001% to 0.0100%,
Ca: 0.0005% to 0.0200%,
Mg: 0.0005% to 0.0200%,
REM: 0.0005% to 0.1000%, and
Bi: 0.0005% to 0.020%.