Metal One
Specialty Steel Corporation
Asahi Steel Co., Ltd.
- November 1917
- Hakama Steel Shoten Co., Ltd. founded.
- November 1943
- Hakama Steel Shoten incorporated into joint stock company, and later renamed Hakama Kozai Inc.
- June 1970
- Company renamed Asahi Steel Co., Ltd.
MC Metalworks Co., Ltd.
- December 1961
- Ryotetsu Inc. established.
- February 1993
- MC Metalworks Co., Ltd. established.
- April 2002
- Ryotetsu Inc. and MC Metalworks merge to form MC Metalworks Co., Ltd.
Ryoyo Steel Center Co., Ltd.
- May 1972
- Ryoyo Steel Center Co., Ltd. established.
Metal One Specialty Steel Corporation
- July 2005
- Asahi Steel Co., Ltd., MC Metalworks Co., Ltd., and Ryoyo Steel Center Co., Ltd. merge to form Metal One Specialty Steel Corporation.
- January 2007
- Capital increased to 500 million yen.
- November 2007
- Osaka Headquarters relocated to Higobashi.
- April 2008
- Company merges with Metal One’s specialty steel division.
- March 2015
- Tokyo Headquarters relocated to JP Tower in Marunouchi.
- July 2016
- Osaka Headquarters relocated to Nakanoshima Central Tower.
- April 2026
- Metal One Nexus corporation established.