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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.:

US 11446901 B1

PDFFull Text
Date of Patent:
Sep. 20, 2022

Filed:

Dec. 26, 2019

Hot-stamped part and manufacturing method therefor

Applicant:

Hyundai Steel Company, Incheon, KR;

Inventors:

Je Youl Kong, Incheon, KR;

Ji Young Kim, Incheon, KR;

Young Chul Park, Incheon, KR;

Hye Jin Kim, Incheon, KR;

Byung Gil Yoo, Incheon, KR;

Wan Yook, Incheon, KR;

Seung Chae Yoon, Incheon, KR;

Gi Hak Yim, Incheon, KR;

Jeong Hwan Jang, Incheon, KR;

Assignee:

Hyundai Steel Company, Incheon, KR;

Attorney:

Fox Rothschild LLP

Primary Examiner:

Anthony M Liang

Int. Cl.
CPC ...
C21D 6/00 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); B32B 15/01 (2006.01); C22C 38/54 (2006.01); C22C 38/50 (2006.01); C22C 38/48 (2006.01); C22C 38/44 (2006.01); B21D 22/02 (2006.01); C21D 7/13 (2006.01);
U.S. Cl.
CPC ...
B32B 15/012 (2013.01); B21D 22/022 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 9/46 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C21D 7/13 (2013.01);
Abstract

A hot-stamped part according to an embodiment of the present invention comprises, as a base layer, a steel comprising: 0.28-0.38 wt % of carbon (C); 0.1-0.4 wt % of silicon (Si); 1.2-2.0 wt % of manganese (Mn); from greater than 0 to 0.020 wt % of phosphorus (P); from greater than 0 to 0.003 wt % of sulfur (S); 0.1-0.5 wt % of chromium (Cr); 0.0015-0.0040 wt % of boron (B); 0.025-0.05 wt % of titanium (Ti); and the remainder of iron (Fe) and inevitable impurities, wherein the microstructure of the base layer is full martensite.

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