Shinhokoku Steel Corporation



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Company outline

Responding Customer Needs with Developing Special Alloy.

World Leading Manufacturer of Low Thermal Expansion Alloy.

Name Shinhokoku Material Corp.
Head quarter
5-13-1 Arajuku-machi, Kawagoe, Saitama, Japan,
Tel : +81-49-242-1950,Fax : +81-49-245-8852
Mie plant
835-1 Takamatsu, Kawagoe-cho, Mie-gun, Mie, Japan
Tel : +81-59-363-2313,Fax : +81-59-363-2312
Capital JPY175.5 million
President & CEO Tadashi Naruse
Employee about 100
Use land Head quarter : 8,130㎡、(Building : 3,295㎡)
Land for rent : 22,526㎡(For commercial use)
Mie plant : 14,047㎡、(Building : 4,116㎡)
  • Saitama Resona Bank, Limited, Kawagoe branch
  • Mitsui Sumitomo Bank, Ltd. Kawagoe branch
  • The Hyakugo Bank, Ltd. Kuwana branch
  • Musashino Bank, Ltd. Kawagoe branch
Stock market Tokyo Stock Exchange, Standard Market
Business Special steel development, Production and Sales.
Production items
  • Low thermal expansion alloy for semiconductor and FPD parts for manufacturing equipment.
  • Durable steel and heat resistance steel for steel works.
  • Precision polishing plate made by low thermal expansion alloy for various wafers.
  • Various alloys. (Rolling material, Drawing material, Welding rod.)
  • Piercing plug (Drilling tool) for seamless steel pipe.
  • Nonferrous alloy (Ti lapping, Sn alloy for lapping plate)
President & CEO
Tadashi Naruse
Takayuki Kamada
Yuji Yokoi
Unaffiliated Director and Audit committee chairman
Kazuya Yao
Unaffiliated Director and Auditor
Takashi Marumo
Unaffiliated Director and Auditor
Yuko Inoue
Executive officers
Executive President
Tadashi Naruse
Executive Vice President, CTO
Masaaki Igarashi
Executive Officer
Takayuki Kamada
Executive Officer and Mie plant GM
Yuji Yokoi
Executive Officer
Hideyoshi Yamaguchi
Main customers
  • Nikon Corporation
  • Canon Inc.
  • Fujikoshi Machinery Corp.
  • ROHM Co., Ltd.
  • Advantest Corporation
  • JAXA (Japan Aerospace Exploration Agency)
  • Nippon steel Corporation
  • JFE Steel Corporation
  • Sanyo Special Steel Co., Ltd.
  • Paramount Glass Mfg. Co., Ltd.
  • Nippon Paper Industries Co., Ltd.
  • IHI Aerospace Co., Ltd.

Company profile

Head quarter

R&D, Material Fabrication Divisions and Sales Div. are located in our headquarters, Kawagoe, Saitama-ken.
Development of original alloy is focused on our R&D and utilizing metallography knowledge, investigation , examination and analysis is being made. Not only advices from our R’&D to our technical and manufacturing section but also our R&D visit our customer and make necessary recommendation of suitable alloy to our customer.
Cultivated metal technology and domestic and overseas network through collaboration with our R&D, regardless of ferrous or nonferrous most of metal can be handled such as machining products with small lot, special rolled steel, titanium alloy rod, Tin plate for lapping MR head and/or cupper plate for lapping of sapphire.

5-13-1 Arajuku-machi, Kawagoe, Saitama, JapanTel : +81-49-242-1950,Fax: +81-49-245-8852

Mie plant

Developed alloy by R&D is manufactured to a high quality cast steel or ingot utilizing accumulated manufacturing technology and experience in long time.
We have 3t, 2t, 1t, and 0.7t high frequency furnace and 5t cast steel can be made as our maximum melt with two furnaces. 100kgs furnace is for testing and development purpose and various test can be made in very close to actual production and it is contributing to not only conventional material but also new development and up grading of quality and functions.

Mie plant : 835-1 Takamatsu, Kawagoe-cho, Mie-gun, Mie, JapanTel : +81-59-363-2313,Fax : +81-59-363-2312



Headquarters : 5-13-1 Arajuku-machi, Kawagoe, Saitama, Japan,
Tel +81-49-242-1950
Mie plant
835-1 Takamatsu,Kawagoe-cho, Mie-gun, Mie, Japan
Tel +81-59-363-2313

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Please feel free to contact Shinhokoku Materials Corp.