The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2025
Filed:
Dec. 18, 2020
Posco, Pohang-si, KR;
Seong-Woo Kim, Gwangyang-si, KR;
Jin-Keun Oh, Gwangyang-si, KR;
Sang-Heon Kim, Gwangyang-si, KR;
Hyo-Sik Chun, Gwangyang-si, KR;
Seong-Beom Bae, Gwangyang-si, KR;
POSCO, Pohang-si, KR;
Abstract
An embodiment of the present invention provides steel for hot forming, a hot-formed member, and methods for manufacturing same, the steel comprising, by wt %, 0.06-0.1% of C, 0.05-0.6% of Si, 0.6-2% of Mn, 0.05% or less of P, 0.02% or less of S, 0.01-0.1% of Al, 0.01-0.8% of Cr, 0.01-0.5% of Mo, 0.02% or less of N, and the remainder of Fe and inevitable impurities, wherein an alloy factor represented by relational expression 1 below is 7 or more, and the number of carbides having a circular equivalent diameter of 0.5 μm or greater is 10/mmor less.Alloy factor=I(Mn)×I(Si)×I(Cr)×I(Mo) [Relational expression 1]