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Stainless Steel Base

All grades of steel are made up of iron and carbon, alloyed with other metals. They also have similar densities, but vary widely in strength and corrosion resistance.

Stainless steel was chosen in particular for Mishima’s base because of its ability to provide a solid and stable foundation for the chair. Stainless steel is steel that has certain elements added to it to improve on the performance of standard carbon steel. Mishima uses stainless steel 304 specifically because of its high-corrosion resistance which protects the chair against rust and tarnish.

Stainless steel 304 is manufactured with 18% chromium and 8% nickel to provide additional qualities to the steel. These include the higher-corrosion resistance as mentioned above, as well as greater oxidation resistance, temperature resistance, higher strength to weight ratio, lower maintenance, and is easier to clean. These properties make stainless steel 304 one of the most versatile forms of stainless steel today. MIshima’s base is made using extra thick 8mm stainless steel 304, for a foundation with unparalleled strength and durability, extending the life of your chair.


Mishima’s unique design is made possible because of the special reinforced attachment point which is attached to the base and provides additional safety. As the weight of the user is transferred onto the chair, the force travels down the arm, through the pivot point, and into the base. The pivot point has been engineered to withstand loads to meet American National Standards Institute / Business and Institutional Furniture Manufacturers Association (ANSI/BIFMA) safety standards.


ANSI and BIFMA are the main industry organizations setting the most widely accepted benchmarks for consumer safety and protection. The ANSI/BIFMA standard is the international standard furniture manufacturers use for products made for commercial office environments. Although manufacturers are not required to meet these standards, reputable manufacturers know the value of going through such rigorous safety tests. These include both the vertical and horizontal loading of the chair, and both stationary and cyclic durability tests. Some example tests include the vertical backrest durability test where the seat’s back is pushed down with 890 N for 10,000 times and the horizontal backrest durability test where the seat back is pushed backwards 120,000 times with a force of 334 N. Other durability tests include the use of a large (136 kg) mass that is dropped from a height of 152 mm from above the seat.


Mishima can be configured to come with a special edition base with a 24K gold finish. This treatment adds a lustrous accent to the chair while also enhancing the corrosion resistance of the base.

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