Invention Application
- Patent Title: PRESS HARDENING STEEL WITH COMBINATION OF SUPERIOR CORROSION RESISTANCE AND ULTRA-HIGH STRENGTH
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Application No.: US17556183Application Date: 2021-12-20
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Publication No.: US20220356540A1Publication Date: 2022-11-10
- Inventor: Qi LU , Jianfeng WANG , Congjie WANG , Qingquan LAI
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Priority: CN202110487225.4 20210505
- Main IPC: C21D1/18
- IPC: C21D1/18 ; C21D8/00
Abstract:
A steel composition is provided. The steel composition includes 0.02-0.45 wt. % carbon (C), 0-8 wt. % manganese (Mn), 0-8 wt. % nickel (Ni), 11-17 wt. % chromium (Cr), 1-3 wt. % silicon (Si), and a balance of iron (Fe). The combined concentration of the Mn and Ni is 2-8 wt. %. The steel composition is configured to form a surface oxide layer including oxides of at least one of the Cr or the Si after being subjected to press hardening. Press-hardened steel (PHS) fabricated from the steel composition and a method of fabricating a (PHS) component from the steel composition are also provided.
Information query
