Invention Grant
- Patent Title: Steel sheet for crown cap, crown cap and method for producing steel sheet for crown cap
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Application No.: US16631539Application Date: 2018-07-25
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Publication No.: US11459149B2Publication Date: 2022-10-04
- Inventor: Takashi Ueno , Nobusuke Kariya , Katsumi Kojima , Yoshihide Yamamoto , Akihiro Katagiri
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Kenja IP Law PC
- Priority: JPJP2017-148314 20170731
- International Application: PCT/JP2018/027994 WO 20180725
- International Announcement: WO2019/026738 WO 20190207
- Main IPC: B65D41/12
- IPC: B65D41/12 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C21D8/02 ; C23G1/00

Abstract:
A steel sheet for crown cap having excellent formability from which a crown cap having an excellent pressure resistance can be produced without an expensive soft liner even if the steel sheet is subjected to sheet metal thinning, the steel sheet having: a chemical composition containing, in mass %, C: more than 0.006% and 0.012% or less, Si: 0.02% or less, Mn: 0.10% or more and 0.60% or less, P: 0.020% or less, S: 0.020% or less, Al: 0.01% or more and 0.07% or less, and N: 0.0080% or more and 0.0200% or less, with the balance being Fe and inevitable impurities; and a percentage of a region of more than 0% and less than 20% at a position of ½ of a sheet thickness, the region having a dislocation density of 1×1014 m−2 or less.
Information query
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