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:
May. 13, 2025
Filed:
Dec. 12, 2022
Hyundai Steel Company, Incheon, KR;
Je Woo Soo Kim, Incheon, KR;
Byung Gil Yoo, Incheon, KR;
Seong Kyung Han, Incheon, KR;
Dong Yong Kim, Incheon, KR;
Hyundai Steel Company, Incheon, KR;
Abstract
A steel sheet for hot press comprises carbon (C) in an amount of 0.03 to 0.15 wt %, silicon (Si) in an amount of 0.1 to 1.5 wt %, manganese (Mn) in an amount of 1.0 to 2.0 wt %, phosphorus (P) in an amount of 0.1 wt % or less, sulfur (S) in an amount of 0.01 wt % or less, boron (B) in an amount of 0.0005 to 0.005 wt %, a sum of one or more of titanium (Ti), niobium (Nb), and vanadium (V) in an amount of 0.01 to 1.0 wt %, chromium (Cr) in an amount of 0.01 to 0.5 wt %, the balance of iron (Fe), and other unavoidable impurities. The steel sheet for hot press includes MnS-based inclusions, and an area fraction of the MnS-based inclusions is 5% or less.