Non-magnetic stainless steels [TOKUSHU KINZOKU EXCEL CO., LTD.]
TOKKIN 305M, TNM-1, SUS316L
It is stainless steel that can maintain non-magnetic properties even after processing! We will propose steel grades according to your usage conditions, such as the required level of non-magnetism.
SUS304, a representative type of austenitic stainless steel, is non-magnetic in its solution-treated state, but it becomes magnetic (more likely to be attracted to magnets) due to martensitic transformation during cold working. Therefore, there have been challenges such as the need to keep the processing rate low to maintain non-magnetism or sacrificing strength. Non-magnetic stainless steel is a type of steel that has been adjusted so that martensite is not induced (or is less likely to be induced) during cold working, allowing it to maintain non-magnetism even after processing. We can recommend types of steel based on your usage conditions, such as processing methods and required levels of non-magnetism.
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basic information
<Materials> - TOKKIN 305M - TNM-1 - SUS316L <Manufacturing Range> Thickness: 0.010 to 3.0mm *Depending on material Width: 3.0 to 300mm The dimensions, delivery times, and prices that can be accommodated vary by material, so please feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
Electromagnetic wave shielding, vibration motor, camera module, FPC, communication device components, medical instruments, indwelling needle.
Line up（3）
| Model number | overview |
|---|---|
| TOKKIN 305M[TOKKIN Original Product] | This steel type stabilizes the austenitic phase by increasing the content of elements such as Ni, Mn, and Cr in SUS304 (18Cr-8Ni), making it less susceptible to magnetization even after cold rolling. TOKKIN 305M is adjusted to have higher levels of these elements within the range of JIS standard SUS305, resulting in greater stability compared to general SUS305. Additionally, due to its high Ni content, it also excels in workability and corrosion resistance. |
| TNM-1[TOKKIN Original Product] | This steel type is adjusted in composition to maintain non-magnetism even at extremely high processing rates. It can achieve a very high strength of 500HV, making it ideal for applications requiring high non-magnetism and high spring properties. Soft materials can also be processed by drawing. |
| SUS316L | Among general-purpose stainless steels, it is often used in applications requiring non-magnetism due to its gradual martensitic transformation during processing. However, at high processing rates, it may exhibit weak magnetism, so caution is necessary depending on the required level. |
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Company information
TOKKIN's materials are everywhere around you, even though you can't see them! 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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