Invention Grant
- Patent Title: Steel for cold forging
-
Application No.: US15317898Application Date: 2014-06-13
-
Publication No.: US10533242B2Publication Date: 2020-01-14
- Inventor: Takahiko Kohtake , Kazuto Kawakami , Makoto Okonogi
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL CORPORATION
- Current Assignee: NIPPON STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/JP2014/065721 WO 20140613
- International Announcement: WO2015/189978 WO 20151217
- Main IPC: C22C38/44
- IPC: C22C38/44 ; C21D1/32 ; C21D9/52 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/08 ; C22C38/12 ; C22C38/14 ; C21D8/06
Abstract:
A steel contains, in a chemical composition, C, Si, Mn, and Al, and contains pearlite as a metallographic structure, and a value obtained by dividing an Mn content in a cementite in the pearlite in terms of at % by an Mn content in a ferrite in the pearlite in terms of at % is higher than 0 and equal to or lower than 5.0.
Public/Granted literature
- US20170114434A1 STEEL FOR COLD FORGING Public/Granted day:2017-04-27
Information query
