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:
Jun. 18, 2013
Filed:
Dec. 05, 2008
Young-roc Im, Pohang-si, KR;
Jae-kon Lee, Pohang-si, KR;
Kyoo-young Lee, Suncheon-si, KR;
Yeong-woo Jeon, Pohang-si, KR;
Jae-hwa Ryu, Pohang-si, KR;
Kyong-su Park, Pohang-shi, KR;
Young-Roc Im, Pohang-si, KR;
Jae-Kon Lee, Pohang-si, KR;
Kyoo-Young Lee, Suncheon-si, KR;
Yeong-Woo Jeon, Pohang-si, KR;
Jae-Hwa Ryu, Pohang-si, KR;
Kyong-Su Park, Pohang-shi, KR;
POSCO, Pohang-shi, KR;
Abstract
A high carbon steel sheet having superior strength and ductility and a method for manufacturing the same comprising: 0.2 to 1.0 wt % carbon (C), 0 to 3.0 wt % silicon (Si), 0 to 3.0 wt % manganese (Mn), 0 to 3.0 wt % chromium (Cr), 0 to 3.0 wt % nickel (Ni), 0 to 0.5 wt % molybdenum (Mo), 0 to 3.0 wt % aluminum (Al), 0 to 0.01 wt % boron (B), 0 to 0.5 wt % titanium (Ti), and the remainder substantially being iron (Fe) and inevitable impurities. The contents of carbon, manganese, chromium, and nickel satisfy the following Equation 1, and the contents of silicon and aluminum satisfy the following Equation 2: (3.0−2.5×C)wt %≦(Mn+Cr+Ni/2)≦8.5 wt %—(Equation 1) Si+Al>1.0 wt % (Equation 2).