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:
Jan. 06, 2026
Filed:
Nov. 23, 2018
Posco, Pohang-si, KR;
Je-Woong Lee, Gwangyang-si, KR;
Sang-Ho Han, Gwangyang-si, KR;
POSCO CO., LTD, Pohang-si, KR;
Abstract
A zinc-based plated steel sheet having excellent room temperature aging resistance and bake hardenability includes a base steel sheet and a zinc-based plating layer formed on the surface of the base steel sheet, wherein the base steel sheet contains, in wt %, no more than 0.005% (excluding 0%) of C, 0.1-1.0% of Mn, no more than 0.3% (excluding 0%) of Si, 0.01-0.08% of P, no more than 0.01% of S, no more than 0.01% of N, 0.01-0.06% of sol.Al, 0.002-0.02% of Nb, and 0.001-0.004% (excluding 0.001%) of B, with the remainder comprising Fe and inevitable impurities, and CS in formula 1 below may satisfy the range of 0.0002-0.002%. In formula 1, [C] and [Nb] represent the contents (wt %) of C and Nb, respectively, in the base steel sheet.CS=[C]−(12/93)*[Nb] [Formula 1]