Invention Application
- Patent Title: Precipitation-Hardening Stainless Steel Powder and Sintered Compact Thereof
- Patent Title (中): 沉淀硬化不锈钢粉末及其烧结结构
-
Application No.: US15112569Application Date: 2015-03-13
-
Publication No.: US20160333450A1Publication Date: 2016-11-17
- Inventor: Hiroki Ikeda , Yuichi Nagatomi
- Applicant: Sanyo Special Steel Co., Ltd.
- Priority: JP2014-052499 20140314; JP2014-054329 20140318
- International Application: PCT/JP2015/057575 WO 20150313
- Main IPC: C22C38/58
- IPC: C22C38/58 ; C22C38/50 ; C22C38/48 ; C22C38/00 ; C22C38/42 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; B22F1/00 ; C22C38/44
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.
Public/Granted literature
- US10011894B2 Precipitation-hardening stainless steel powder and sintered compact thereof Public/Granted day:2018-07-03
Information query
