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. 23, 2020
Filed:
Jun. 06, 2018
Applicant:
Daido Steel Co., Ltd., Nagoya-shi, JP;
Inventors:
Yoshihiko Koyanagi, Nagoya, JP;
Hiroyuki Takabayashi, Nagoya, JP;
Assignee:
DAIDO STEEL CO., LTD., Nagoya-Shi, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/18 (2006.01); C22C 38/22 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/48 (2006.01); C21D 1/28 (2006.01); C21D 7/02 (2006.01); C21D 7/13 (2006.01); C21D 9/02 (2006.01); C21D 9/46 (2006.01); C21D 6/00 (2006.01); C22C 38/00 (2006.01); C21D 8/00 (2006.01); C21D 9/00 (2006.01); C22C 38/40 (2006.01); C22C 38/20 (2006.01);
U.S. Cl.
CPC ...
C21D 6/008 (2013.01); C21D 1/28 (2013.01); C21D 6/002 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 7/02 (2013.01); C21D 7/13 (2013.01); C21D 8/005 (2013.01); C21D 9/0093 (2013.01); C21D 9/02 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/18 (2013.01); C22C 38/22 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C21D 2211/004 (2013.01); C21D 2211/005 (2013.01); C22C 38/20 (2013.01); C22C 38/40 (2013.01); F01N 2370/00 (2013.01); F01N 2530/00 (2013.01); F01N 2560/00 (2013.01);
Abstract
The present invention relates to a ferritic stainless steel according to the present invention, containing, in mass %: 0.001%≤C≤0.020%, 0.05%≤Si≤0.50%, 0.1%≤Mn≤1.0%, 15.0%≤Cr≤25.0%, Mo<0.50%, 0.50%≤W≤5.00%, and 0.01%≤Nb≤0.50%, with a balance being Fe and unavoidable impurities, having a content (coarse Laves phase ratio) of coarse Laves phase having a diameter of 0.50 μm or more being 0.1% or less, and having an average grain size being 30 μm or more and 200 μm or less.