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:
Sep. 11, 2018
Filed:
Oct. 17, 2013
Applicant:
Nippon Steel & Sumitomo Metal Corporation, Chiyoda-ku, Tokyo, JP;
Inventors:
Suguru Yoshida, Kisarazu, JP;
Tatsuya Koyama, Nishio, JP;
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/00 (2006.01); C21D 1/10 (2006.01); C21D 9/32 (2006.01); C21D 9/40 (2006.01); C23C 8/18 (2006.01); C23C 8/26 (2006.01); C23C 8/34 (2006.01); C23C 8/80 (2006.01); C21D 1/06 (2006.01); C22C 38/60 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (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 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C21D 1/74 (2006.01); C22C 38/34 (2006.01);
U.S. Cl.
CPC ...
C21D 1/10 (2013.01); C21D 1/06 (2013.01); C21D 1/74 (2013.01); C21D 9/00 (2013.01); C21D 9/32 (2013.01); C21D 9/40 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/34 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/60 (2013.01); C23C 8/18 (2013.01); C23C 8/26 (2013.01); C23C 8/34 (2013.01); C23C 8/80 (2013.01); Y02P 10/253 (2015.11);
Abstract
A Roughly shaped material for induction hardened components including: a. steel as a base metal including, as a chemical composition, by mass %, C: 0.35% to 0.6%, Si: 0.02% to 2.0%, Mn: 0.35% to 1.5%, Al: 0.001% to 0.5%, Cr: 0.05% to 2.0%, S: 0.0001% to 0.05%, N: 0.003% to 0.0120%, P: 0.03% or less, O: 0.0050% or less, an iron nitride layer having a thickness of 0.1 μm to 50 μm in a depth direction is formed at a surface, and a volume fraction of a γ' phase, which is a Fe nitride, in the iron nitride layer, is 80% or more.