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:
Apr. 19, 2022
Filed:
Sep. 06, 2017
Applicant:
Hitachi Metals, Ltd., Tokyo, JP;
Inventor:
Kazuhiro Yamamura, Tokyo, JP;
Assignee:
HITACHI METALS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/18 (2006.01); C22C 38/00 (2006.01); C22C 38/24 (2006.01); B26B 9/00 (2006.01); C21D 8/02 (2006.01); C22C 38/02 (2006.01); C22C 38/12 (2006.01); C22C 38/18 (2006.01); C21D 9/46 (2006.01); C21D 1/18 (2006.01);
U.S. Cl.
CPC ...
C21D 9/18 (2013.01); B26B 9/00 (2013.01); C21D 8/02 (2013.01); C22C 38/00 (2013.01); C22C 38/02 (2013.01); C22C 38/12 (2013.01); C22C 38/18 (2013.01); C22C 38/24 (2013.01); C21D 1/18 (2013.01); C21D 9/46 (2013.01);
Abstract
Provided is a blade material having high strength. The blade material contains, in % by mass, 0.5 to 0.8% of C, 1.0% or less of Si, 1.0% or less of Mn, 11 to 15% of Cr, and 0.1 to 0.8% of V, the remainder includes Fe and inevitable impurities, and has a thickness of 0.5 mm or less, wherein the structure of the blade material as observed after polishing the surface thereof has ferrites and carbides, the carbides have an average particle diameter of 0.5 μm or less, and a proportion of carbides containing V in the carbides is 50% or less in terms of a proportion in an area of a field of view.