Hardening is a treatment to increase hardness and strength of steel. Steel is heated until austenitized, then cooled rapidly (or quenched) in water, oil, or gas. Hardening makes steel drastically harder, but lowers toughness. Tempering equilibrates the steel for hardness and toughness that are ideal for intended use.

Normalizing and annealing process are intended to soften a steel, to improve machinability. In addition, it is able to reduce residual stress and improve the structure of the components that has been formed. customers to trust us with their products, and so we focus on our quality control system.

Vacuum heat treatment process is performed under vacuum atmospheres. It maintains high luminance with little surface deterioration of the treated material, and can be used for die and various metal components.
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Austempering is an isothermal heat treatment, ideal for small components such as springs, clips and retainers. Compared with normal hardening and tempering, there are many positive characteristics such as significantly higher improvement of toughness and durability, and less contortion due to hardening. It is expected to greatly improve the quality of mechanical components for automobiles, office automation equipment, etc., which are continuously becoming lighter, thinner, shorter and smaller.