Patent ID: 11946112
Assignee: JFE STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC C

Claim 1:
2. The high-strength steel sheet according to claim 1, wherein the chemical composition further contains, in mass %, one or two or more selected from the following groups A to E:
Group A:
one or two or more selected from:
Ti: 0.003 to 0.05%,
Nb: 0.003 to 0.05%,
V: 0.001 to 0.1%, and
Zr: 0.001 to 0.1%.

Group B:
one or two or more selected from:
Cr: 0.01 to 1.0%,
Mo: 0.01 to 0.20%, and
B: 0.0001 to 0.0030%.

Group C:
one or two or more selected from:
Cu: 0.01 to 0.5%,
Ni: 0.01 to 0.5%, and
Sn: 0.001 to 0.1%.

Group D:
Sb: 0.001 to 0.1%.

Group E:
REMs and Mg in a total amount of 0.0002% or greater and 0.01% or less.