Invention Grant
- Patent Title: High performance iron-based alloys for engine valvetrain applications and methods of making and use thereof
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Application No.: US16867881Application Date: 2020-05-06
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Publication No.: US11215090B2Publication Date: 2022-01-04
- Inventor: Cong Yue Qiao , David Doll , Todd Trudeau , Douglas Dooley
- Applicant: L.E. Jones Company
- Applicant Address: US MI Menominee
- Assignee: L.E. Jones Company
- Current Assignee: L.E. Jones Company
- Current Assignee Address: US MI Menominee
- Agency: Buchanan Ingersoll & Rooney PC
- Main IPC: C21D1/25
- IPC: C21D1/25 ; F01L3/02 ; C21D9/00 ; C22C38/22 ; C22C38/24 ; C21D6/02 ; C22C38/26 ; C22C38/00 ; C22C38/42 ; C21D6/00 ; C21D1/18 ; C22C38/02 ; C22C38/04 ; C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/52 ; C22C38/54 ; F16K25/00

Abstract:
An iron-based alloy includes, in weight percent, carbon from about 1 to about 2 percent; manganese from about 0.1 to about 1 percent; silicon from about 0.1 to about 2.5 percent; chromium from about 11 to about 19 percent; nickel up to about 8 percent; vanadium from about 0.8 to about 5 percent; molybdenum from about 11 to about 19 percent; tungsten up to about 0.5 percent; niobium from about 1 to about 4 percent; cobalt up to about 5.5 percent; boron up to about 0.5 percent; nitrogen up to about 0.5 percent, copper up to about 1.5 percent, sulfur up to about 0.3 percent, phosphorus up to about 0.3 percent, up to about 5 percent total of tantalum, titanium, hafnium and zirconium; iron from about 50 to about 70 percent; and incidental impurities. The alloy is suitable for use in elevated temperature applications such as in valve seat inserts for combustion engines.
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