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:
Jul. 03, 2018
Filed:
Mar. 13, 2015
Applicant:
Sanyo Special Steel Co., Ltd., Himeji-shi, JP;
Inventors:
Hiroki Ikeda, Himeji, JP;
Yuichi Nagatomi, Himeji, JP;
Assignee:
Sanyo Special Steel Co., Ltd., Himeji-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 1/00 (2006.01); B22F 3/105 (2006.01); B22F 3/16 (2006.01); B29C 67/00 (2017.01); B33Y 70/00 (2015.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/50 (2006.01); C22C 33/02 (2006.01); C22C 38/58 (2006.01); C22C 38/48 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); B22F 3/24 (2006.01);
U.S. Cl.
CPC ...
C22C 38/58 (2013.01); B22F 1/0003 (2013.01); B29C 67/00 (2013.01); B33Y 70/00 (2014.12); C22C 33/0285 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); B22F 3/16 (2013.01); B22F 2003/248 (2013.01); B22F 2301/35 (2013.01); B22F 2998/00 (2013.01); C21D 2211/008 (2013.01); C22C 33/02 (2013.01); Y02P 10/295 (2015.11);
Abstract
There is provided a precipitation hardening stainless steel powder including, in percentage by mass: Si: ≤1.0%; Mn: ≤1.8%; Ni: 3.0 to 8.5%; Cr: 12.0 to 20.0%; Mo: 0.1 to 2.5%; Cu: 1.0 to 5.0% and/or Ti+Al: 1.0 to 5.0%; Nb+Ta≥5C or Nb≥5C; N≤350 ppm; and the balance being Fe and incidental impurities. A sintered compact fabricated from the steel powder has a martensite content of 90% or more. The precipitation hardening stainless steel powder provides a sintered compact that exhibits high strength after aging.