Company outline

Name Shinhokoku Steel Corporation
Head quarter 5-13-1 Arajuku-machi, Kawagoe-shi, Saitama-ken, Japan
Tel : +81-49-242-1950, Fax: +81-49-245-8852 MAP
Mie plant 835-1 Takamatsu, Kawagoe-cho, Mie-gun, Mie-ken, 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
  • Musashino Bank, Ltd. Kawagoe branch
  • The Hyakugo Bank, Ltd. Kuwana branch
Stock market Tokyo Stock Exchange, JASDAQ Standard classification
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
Director & Executive Officer
Kiyoshi Hasegawa.
Director and Audit committee chairman
Shinichi Narishima.
Unaffiliated Director and Auditor
Masakatsu Sasamoto
Unaffiliated Director and Auditor
Masaaki Sinomiya,
Unaffiliated Director and Auditor
Takashi Marumo.
Executive Officer and Mie plant GM
Yuji Yokoi
Executive Officer and Sale Div. GM
Takayuki Kamada
Main customers
  • Nikon Corporation
  • Nippon steel & Sumitomo Metal Corporation
  • Paramount Glass Mfg. Co., Ltd.
  • Canon Inc.
  • JFE Steel Corporation
  • Aomori Olympus Co., Ltd.
  • Fujikoshi Machinery Corp.
  • Sanyo Special Steel Co., Ltd.
  • TDK Corporation
  • ROHM Co., Ltd.
  • Hitachi Metals, Ltd.
  • Nippon Paper Industries Co., Ltd.
  • JAXA (Japan Aerospace Exploration Agency)
  • IHI Aerospace Co., Ltd.
  • Ohji Paper 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-shi, Saitama-ken, Japan
Tel : +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-ken, Japan
Tel : +81-59-363-2313, Fax : +81-59-363-2312

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