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TOKKIN is a precision metal materials manufacturer founded in 1940.
We produce high-quality, high-value-added materials according to the each customer specifications, such as processing metals into thin strips or sheets by cold rolling to improve mechanical properties, cladding different materials to form a single material, and applying resin or solder to metal surfaces.
Our materials are used in a wide range of products, from daily life gadgets such as smart devices, PCs, automobiles, and game consoles to industrial equipment such as semiconductor manufacturing equipment, medical equipment, and textile machinery.
Although our material is mostly invisible, it plays an indispensable role in ensuring that the products and their supporting components function well.
High-functional materials, made possible only by TOKKIN, support the technologies that are created one after another behind the scenes.
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TOKKIN's custom-made materials meet your requirements and solve the issues.
We provide made-to-order materials with small lots and short lead time.
Every customer has distinct needs when it comes to material properties, which is why we prioritize open dialogue with our customers to ensure their expectations are met.
We effectively meet customer requests through comprehensive coordination and attention to detail.
TOKKIN is not affiliated with a major steel mills, insists on sourcing the best raw materials from around the world to achieve superior quality.
We have 75 years of experience in re-rolling foil, having started in 1950.
We are thrilled to announce the launch of mass production for TOKKIN's slimmest innovation yet, an incredible 2 microns in thickness!
We provide flexible and prompt customer support for prototype orders. As long as we have stock, you can order even postcard size.
Our flexible development and manufacturing system allows us to meet your specifications from the prototype stage.
MOQ for mass production is 100 kg. Additionally, if you have unique specifications, we can fulfill orders as small as 1 kg.
We supply small lots even with made-to-order production, contributing to customers' inventory risk and total cost reduction.
We possess a diverse range of equipment and expertise to evaluate materials, including their mechanical and physical properties, as well as their metal structure.
We offer comprehensive support, from research and analysis to verification, to assist our customers in solving their problems.
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Do you have a material with these properties?
I would like to solve this problem...
Inquiries to us usually start with a conversation like this.
TOKKIN not only recommend suitable materials from existing products, but also maufacuture better materials together with customers.
That's why we carefully listen to our customers' requests and issues, and repeatedly conduct trial runs to find solutions.
The following are some of the proprietary, high-performance, high-value-added materials we have developed to date.
JIN™ Series
This is an excellent material series with the world's highest level of strength and ductility balance, achieved through TOKKIN's proprietary "JIN" manufacturing process.
We supply a variety of soft magnetic materials which themselves become strongly magnetic when exposed to an external magnetic field, and nonmagnetic materials which do not become magnetic.
nanoSUS™ Series
Grain-refined stainless steel - Compared to standard crystalline grain size, it is more effective in improving strength, fatigue properties, and workability.
High Corrosion Resistance/Heat Resistance Alloys
These alloys have excellent corrosion resistance and heat resistance.
In addition to the strips we manufacture, wires and bars manufactured by our partner companies are also available .
Materials with Extra Functions
Metals with extra functions.
Variety of combinations such as cladding, coating (OVIONE™), plating, solder and multigage metals are also available.
Thickness Less than 0.10mm
In addition to the standard material SUS304, we can manufacture metal foils with a thickness of less than 0.10 mm in almost all the materials.
We supply various electric resistance and electric heating alloys.
Our high-precision thickness guarantee reduces variation in resistance values.
We supply stainless steel for springs, such as SUS301, 304, 631, 632J1, and 420J2.
Please contact us for customized specifications.
We also perform processing of materials provided by customers, such as cold rolling, slitting, and edge processing.
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TOKKIN owns many instruments and know-how necessary for the analysis of metal materials.
We believe that by making adjustments based on analytical data, we can propose better materials to solve problems.
Also, we consider our customers' manufacturing process, yield rate improvement, and efficiency, which enable an overall optimization of customer's production.
Please contact us if you have any problems regarding metal materials, we will be happy to help you.
TOKKIN's materials are everywhere around you, even though you can't see them!
Solutions with our custom-made materials 
Creating new material properties with customers 
Proposals that lead to overall optimization
Understand TOKKIN with our corporate movie