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. 11, 2026
Filed:
Nov. 22, 2021
Posco Co., Ltd, Pohang-si, KR;
Kyoung-Rae Cho, Gwangyang-si, KR;
Hee-Su Park, Gwangyang-si, KR;
Hyun-Gyu Hwang, Gwangyang-si, KR;
Sung-Kyu Kim, Gwangyang-si, KR;
Chang-Hyo Seo, Gwangyang-si, KR;
POSCO CO., LTD, Pohang-si, KR;
Abstract
Provided are a high-strength steel sheet having excellent bendability and formability, and a method for manufacturing same. The steel sheet includes: 0.05 to 0.12% of carbon (C), 2.0 to 3.0% of manganese (Mn), 0.5% or less (excluding 0%) of silicon (Si), 1.0% or less (excluding 0%) of chromium (Cr), 0.1% or less (excluding 0%) of niobium (Nb), 0.1% or less (excluding 0%) of titanium (Ti), 0.0025% or less (excluding 0%) of boron (B), 0.02 to 0.05% of aluminum (sol.Al), 0.05% or less (excluding 0%) of phosphorus (P), 0.01% or less (excluding 0%) of sulfur (S), 0.01% or less (excluding 0%) of nitrogen (N), with a balance of Fe and inevitable impurities, and 35 to 50% of ferrite and 35 to 45% of bainite, and a balance of martensite, the ferrite comprising, by area fraction: 8 to 15% of non-recrystallized ferrite and 27 to 35% of recrystallized ferrite, as a microstructure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile