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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 11740038 B1

PDFFull Text
Date of Patent:
Aug. 29, 2023

Filed:

Nov. 22, 2016

Ferritic stainless steel having excellent sound absorption properties for exhaust system heat exchanger and method of manufacturing the same

Applicant:

Posco, Pohang-si, KR;

Inventors:

Il Chan Jung, Pohang-si, KR;

Jong Chul Kim, Daegu, KR;

Jae Hong Shim, Seoul, KR;

Deok Chan Ahn, Seoul, KR;

Jin Suk Kim, Pohang-si, KR;

Assignee:

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

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Humera N Sheikh

Assistant Examiner:

Katherine A Christy

Int. Cl.
CPC ...
C22C 38/22 (2006.01); C22C 38/38 (2006.01); C22C 38/20 (2006.01); F28F 21/08 (2006.01); B22D 11/00 (2006.01); C21D 8/02 (2006.01); C21D 6/00 (2006.01); C22C 38/04 (2006.01);
U.S. Cl.
CPC ...
F28F 21/083 (2013.01); B22D 11/002 (2013.01); C21D 6/002 (2013.01); C21D 8/0226 (2013.01); C22C 38/04 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/38 (2013.01);
Abstract

A ferritic stainless steel for an exhaust system heat exchanger having excellent sound absorption properties and a method for manufacturing the same are disclosed. The ferritic stainless steel for an exhaust system heat exchanger having excellent sound absorption properties includes, by weight percent, 0.001 to 0.01% of C, 0.001 to 0.01% of N, 0.2 to 1% of Si, 0.1 to 2% of Mn, 10 to 30% of Cr, 0.001 to 0.1% of Ti, 0.001 to 0.015% of Al, 0.3 to 0.6% of Nb, 0.01 to 2.5% of Mo, and the balance of Fe and other unavoidable impurities, wherein the number of inclusions existing in a ferrite matrix and satisfying the following Formula 1 is 5 ea/mmor more.

Find Patent Forward Citations

Jung, Il. (2023). Ferritic stainless steel having excellent sound absorption properties for exhaust system heat exchanger and method of manufacturing the same (U.S. Patent No. 11740038). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11740038

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