IDiyas

For the Inventor, By the Inventor

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 11584973 B1

PDFFull Text
Date of Patent:
Feb. 21, 2023

Filed:

Sep. 13, 2018

Steel sheet having excellent image clarity after painting

Applicant:

Posco, Pohang-si, KR;

Inventors:

Doo-Jin Paik, Gwangyang-si, KR;

Seul-Ki Park, Gwangyang-si, KR;

Chung-Won Kim, Gwangyang-si, KR;

Jung-Ki Kim, Gwangyang-si, KR;

Sung-Il Kim, Gwangyang-si, KR;

Hyeon-Seok Hwang, Gwangyang-si, KR;

Je-Woong Lee, Gwangyang-si, KR;

Jeong-Eun Kim, Gwangyang-si, KR;

Cho-Rong Hong, Gwangyang-si, KR;

Assignee:

POSCO CO., LTD, Pohang-si, KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 2/02 (2006.01); C23C 2/06 (2006.01); C23C 2/12 (2006.01); C23C 2/40 (2006.01); C23C 16/06 (2006.01); B32B 15/01 (2006.01); C22C 38/14 (2006.01); C22C 38/12 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C21D 1/26 (2006.01); C25D 3/22 (2006.01); C25D 3/44 (2006.01); C25D 5/36 (2006.01); C25D 7/06 (2006.01); C23C 30/00 (2006.01); B32B 15/18 (2006.01); B32B 15/04 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); B32B 15/01 (2013.01); B32B 15/012 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C21D 1/26 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0205 (2013.01); C21D 8/0236 (2013.01); C21D 8/0263 (2013.01); C21D 8/0273 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C23C 2/02 (2013.01); C23C 2/06 (2013.01); C23C 2/12 (2013.01); C23C 2/40 (2013.01); C23C 16/06 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); C25D 3/22 (2013.01); C25D 3/44 (2013.01); C25D 5/36 (2013.01); C25D 7/06 (2013.01); C21D 2201/05 (2013.01); C21D 2211/005 (2013.01); C25D 7/0614 (2013.01); Y10T 428/12757 (2015.01); Y10T 428/12792 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12951 (2015.01); Y10T 428/12958 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12993 (2015.01);
Abstract

Provided is a steel sheet having excellent image clarity after painting, including: carbon (C): 0.001% to 0.03%, silicon (Si): 0.001% to 0.35%, manganese (Mn): 0.05% to 2.2%, phosphorus (P): 0.003% to 0.1%, sulfur (S): 0.001% or 0.025%, aluminum (Al): 0.01% to 0.1%, nitrogen (N): 0.001% to 0.007%, and a remainder of iron (Fe) and inevitable impurities. The microstructure of the steel sheet mainly is ferrite phases. An R-cube texture of a surface layer of the steel sheet is 5% or less by area %.

Find Patent Forward Citations

Loading…