東北特殊鋼, headquartered in Miyagi Prefecture, attracted attention for its “metal that does not deform in a magnetic field” and announced in May 2026 that Daido Steel would launch a tender offer to make it a wholly owned subsidiary. It was designated as securities to be delisted in September, with delisting scheduled for 19 October.
東北特殊鋼 is a specialty steel manufacturer established in 1937 that operates under the “Kirin Hagane” trademark. Guided by Tohoku University, it was founded with the mission of supplying high-grade specialty steels and has developed a system for selecting materials according to their applications, including soft magnetic materials that respond to magnetic fields, low thermal expansion alloys, and composite materials that are deliberately deformed by magnetic fields. It holds strong positions in Japan in areas such as automotive engine valve steel and electromagnetic stainless steel, and is distinguished by handling heat treatment and secondary processing in-house. These technologies are also said to serve applications including semiconductor manufacturing equipment, vacuum equipment, and equipment components. The article could not confirm whether the company’s materials had been adopted for EUV lithography equipment as of publication, and therefore avoids drawing a definitive conclusion.
Regarding the company’s situation, management recognizes that shrinking demand for engine components could become a structural factor, and its financial results materials explicitly state that the targets of its medium-term plan were not achieved. With the share price remaining at roughly 60% of asset value, attention has focused on trends in business profitability and the implications of the restructuring following the announcement of a tender offer by the parent company. The company is also said to be envisaging business development after restructuring through the tender offer, and the dates for its designation as securities to be delisted and for its delisting have been announced.
The article examines the accuracy of the expression “metal that does not deform in a magnetic field” and explains that the company actually combines 3 types of materials according to their applications: magnetic-response materials, low thermal expansion alloys, and magnetostrictive clad materials that deform in a magnetic field. While expanding sales of high-margin materials for semiconductor manufacturing equipment is included in the company’s plans, there is currently no conclusive evidence of adoption in EUV lithography equipment itself. The main focus is therefore on interpreting the market’s valuation and the parent company’s recovery model.