Specialty Steel Company

Our steel manufacture a and casting techniques
draw upon over a century of tradition.
It is into this tradition that we weave never-before-seen concepts.

We combine versatile concepts with foundational technologies stemming from tradition - namely, steel manufacture techniques such as YASUGI SPECIALTY STEEL, and casting techniques centered around rolls- to develop cutting-edge high-performance materials. The areas in which we are active are many,and encompass foundational fields such as iron, steel, automobiles and industrial machinery,as well as industries that are showing remarkable growth, such as those of aircraft, energy and electronics.
Also, as eco-friendly products, our soft magnetic parts contribute to improving the energy efficiency of a range of devices, and reducing CO2 emissions.


1. Specialty Steel

A history of innovation in advanced metallurgical technology and materials development

True to our tradition, we strive to consistently refine our material development capabilities. With the same intensity required to create tama-hagane—a high-value-added material produced by the tatara foundry method—we enhance the full luster of the materials we produce. While enhancing steel purity through stringent raw material selection methods, we continue to support the development of a wide range of industries by providing highly functional materials.
2. Rolls

Advanced roll technological capabilities

We boast a wealth of leading brands including HINEX rolls for steel mills. We are also engaged in the manufacture of injection-molding machine cylinders and steel-frame structures for construction, as well as the processing of related component.
3. Soft Magnetic Components and Materials

Contributing to energy conservation through innovative materials

We offer Metglas® amorphous metals, FINEMET® nanocrystalline soft magnetic materials, and other distinctive materials and products to use for energy conservation purposes in power transformers and a wide range of other applications.

Major Products

  • SLD-MAGIC Cold Work Tool Steel

    This die steel is suited to high-tensile plates widely used in making lighter cars with safer designs. Its characteristics are high machinability and fewer dimensional deformities following heat treatment. It contributes to overall die cost reductions because its superior quality means that dies last longer.

  • Piston Ring Materials

    With the call for more compact yet more powerful engines, steel piston rings have come to be widely employed. Controlling metal texture has made it possible for Hitachi Metals to provide piston ring materials with increased abrasion resistance and improved sliding friction in the form of precision shaped wires that have undergone plastic working and heat treatment.

  • Sputtering Target Materials for LCDs

    The Sputtering Target materials are used for thin film interconnects of LCDs. Our HIP (Hot Isostatic Press) method enables to obtain fine and homogeneous structure, which corresponds to the requirement of increasing in size. Furthermore, our alloy design technology enables to provide various alloy materials as usage, which responds to the requirement like low-value resistance, high heat resistance, and high moisture-resistance.

  • HINEX Rolls for Steel Mills

    Our rolls for steel rolling mills have higher strength and wear-resistance and enable more efficient production of high-precision rolled products. A variety of products are available to manufacture steel plates, pipes, bars and wires as well as other shaped steels in response to many different demands from steal product manufacturers. Most notably, our HINEX products, which was the first commercially available high-speed steel-based composite rolls in the world, and other high-speed steel composite rolls, have significantly better rolling performance than traditional rolls and help improve rolling productivity and quality.

  • FINEMET® Nanocrystalline Magnetic Alloys

    FINEMET® is the world’s first nanocrystalline soft magnetic alloy developed by Hitachi Metals. This new Fe-based soft magnetic alloy is composed of nanocrystals. It has high saturation induction, high permeability, excellent temperature characteristics and temporal stability. FINEMET® is utiized in high-frequency power transformers, noise-suppression components and other applicat ions where it contributes to downsizing and lightening.

Products by Specialty Steel Company