Corporate History

1910 June The Tobata Foundry Co., which later became the Tobata Works, established. This was the first modern malleables manufacturing facility in Japan. Later, fittings, small-scale pig iron rolls, and cast steel product manufacturing facilities were added.
1917 July Teikoku Foundry Co., which later became the Wakamatsu Works, established to initiate production of a variety of rolls in Japan. Purchased in 1926 by the Tobata Foundry Co.
1922 December Kizugawa Manufacturing, which later became the Kuwana Works, established as a plant specializing in fittings. Purchased in 1926 by the Tobata Foundry Co.
1929 November The Tokyo Manufacturing Plant of the Tobata Foundry Co., which later became the Fukagawa Works, established to manufacture malleables for use in the automobile industry.
1934 February Yasugi Steel Manufacturing, which later becomes Yasugi Works, is merged by Tobata Foundry Co. (Yasugi Steel Manufacturing was created as the result of the Unpaku-Steel Limited partnership in 1899 and purchased by Tobata Foundry Co. as a subsidiary in 1925).
1935 November Name of the Tobata Foundry Co. changed to Kokusan Industries, Ltd.
1937 May Kokusan Industries, Ltd. purchased by Hitachi, Ltd.
1956 April Hitachi Metals Industries, Ltd. established (Capital: ¥1 billion provided by Hitachi, Ltd.)
October Hitachi, Ltd., transferred its metals business and five plants to Hitachi Metals Industries, Ltd. (Tobata, Fukagawa, Kuwana, Wakamatsu, and Yasugi), and business activities began.
1961 July Kumagaya Works established
August Over-the-counter trading of shares begun
October Listed on the second sections of the Tokyo and Osaka stock exchanges
1962 August Upgraded listing to first sections of the Tokyo and Osaka stock exchanges
1965 November Hitachi Metals America, Ltd., established in the United States
1967 January Merged with Hitachi Metals, Ltd., to change par value of shares and company name
1970 October Hitachi Metals Europe GmbH established in Germany
1979 February Hitachi Metals Singapore Pte. Ltd. established in Singapore
1995 October Merger with Hitachi Ferrite, Co. Ltd.
2001 April Implementation of officer system and company system
2003 June Adopts Company-with-Committees Structure
2003 August Purchased the Amorphous Metals Business Division of Honeywell International Inc.
2003 October Transfered Hitachi Metals' water treatment business to Hitachi Plant Engineering & Construction Co., Ltd.
2004 April NEOMAX Co., Ltd. became a consolidated subsidiary of Hitachi Metals
2005 April Soft Magnetic Materials Company Established
2007 April Merger with NEOMAX Co., Ltd.
2011 April Metglas Yasugi Works established
2012 April Saga Works established
2013 July Merger with Hitachi Cable, Ltd., Cable Materials Company established
2014 July Acquisition of Shares of MMC Superalloy Corporation. Hitachi Metals MMC Superalloy, Ltd. became a consolidated subsidiary of Hitachi Metals
2014 November Waupaca Foundry, Inc. became a consolidated subsidiary of Hitachi Metals
2015 January Hitachi Metals Korea Co., Ltd. is established.
2015 November Diehl Tool Steel, Inc., a wholly owned tool steel distribution subsidiary in U.S., is established.
2016 February Acquisition of shares in U.S. medical equipment components companies, HTP-Meds, LLC and Hi-Tech Machine and Fabrication, LLC.
2016 September Neodymium-Iron-Boron magnets manufacturer Hitachi Metals San Huan Magnetic Materials (Nantong) Co., Ltd. is established in China.
2017 April Global Research & Innovative Technology Center (GRIT) is established.
2018 April Hitachi Metals MMC Superalloy, Ltd. merges with Hitachi Metals.
The Okegawa Works is established.
2019 April Reform the 4 internal companies into 2 business divisions.
2023 January Hitachi Metals changed its name to Proterial.