Patent Number: 6,309,474

Title: Process for producing maraging steel

Abstract: In a method for producing maraging steel, a thin plate of maraging steel is subjected to an aging treatment, is then subjected to a fluoridation processing in which the thin plate is heated and maintained in a fluoric reacting gas including fluorine so as to form a fluoride layer on a surface of the thin plate, and is then subjected to nitriding in a nitriding reaction gas including ammonia gas so as to restrict the carbon concentration of the thin plate after the nitriding to 2 weight % or less.

Inventors: Yagasaki; Toru (Wako, JP)

Assignee: Honda Giken Kogyo Kabushiki Kaisha

International Classification: C23C 8/34 (20060101); C21D 6/00 (20060101); C23C 8/24 (20060101); C23C 8/06 (20060101); C23C 8/26 (20060101); C23C 008/26 ()

Expiration Date: 10/30/2018