Nonmagnetic
Austenitic stainless steel is inherently non-magnetic, but it may exhibit magnetism due to work hardening during machining or forming processes.
Combining non-magnetic properties with high wear resistance is technically challenging, as materials that are highly wear-resistant often exhibit some degree of magnetism.
There are many types of stainless steel available, each with different compositions and properties. Please select the material that best matches your application's performance requirements.
There are many types of stainless steel available, so please select the material that best suits your application.
Representative non-magnetic materials
Common non-magnetic metals include silver, copper, aluminum, and their alloys. TNK specializes in stainless steel processing, but we are also fully capable of handling the materials mentioned above without any issues. When processing expensive metals such as silver, TNK not only deliver the finished product but also return any cut-off material separately. Please consult us when placing your order.
Characteristics
Austenitic stainless steels are non-magnetic and well suited for environments where magnetic interference is a concern, such as in solenoids.
However, its wear resistance is lower than that of martensitic stainless steel, so please select a material that best matches your performance requirements.
TNK handles standard stainless steels such as SUS303, SUS304 and SUS316, as well as 15MH.
TNK can also select low-carbon materials tailored to the specific requirements of your application. TNK supports you from small lot prototyping during early development to cost optimization in mass production. Please feel free to contact us for collaboration.
*If non-magnetic and wear resistant properties are required15MH .
The graph above shows an image of non-magnetism and wear resistance.
Mechanical and physical properties (room temperature)
| Material | 硬度 HV |
density g / cm3 |
Modulus of Elasticity × 104N/mm2 |
specific heat J/(g・k) |
Thermal conductivity W/(m・k) |
Coefficient of thermal expansion × 10-6/ ℃ |
specific electrical resistivity μΩ cm |
magnetic |
| SUS303 | 200 or less | 8.03 | 19.30 | 0.50 | 16.3 | 17.3 | 72 | Nonmagnetic |
| SUS304 | 200 or less | 7.93 | 19.30 | 0.59 | 16.3 | 16.1 | 72 | Nonmagnetic |
| SUS316 | 200 or less | 8.03 | 19.30 | 0.50 | 15.2 | 17.3 | 74 | Nonmagnetic |
| SUS410 | 400 ~ 600 | 7.75 | 20.20 | 0.46 | 23.8 | 9.9 | 57 | Strong magnetism |
| SUS420J2 | 500 ~ 700 | 7.75 | 20.60 | 0.46 | 25.0 | 10.4 | 56 | Strong magnetism |
| SUS430 | 180 | 7.75 | 20.00 | 0.46 | 25.6 | 10.4 | 60 | Strong magnetism |
| SUS440C | 600 ~ 800 | 7.80 | 22.05 | 0.46 | 24.2 | 10.6 | 60 | Strong magnetism |
| SUH660 | - | 7.94 | 20.10 | 0.46 | 15.0 | 16.8 | 9 | Nonmagnetic |
| 15MH | 500 | 7.75 | 19.50 | 0.46 | 14.7 | 13.1 | 70 | Nonmagnetic |
| SUJ2 | 750 | 7.82 | 20.80 | 0.46 | 46.0 | 12.5 | - | Strong magnetism |
| SK105(SK3) | - | 7.75 | - | 0.46 | 45.2 | 11.3 | - | Strong magnetism |
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Other materials
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MATERIAL
Corrosion resistance
Corrosion resistance
In metals, corrosion resistance refers to resistance to rust. As rust progresses, the metal will no longer be able to maintain its strength and will no longer be able to perform its intended function. In order to prevent rust, it is important to create an environment that is less susceptible to rust, as well as to select materials that are resistant to rust.
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MATERIAL
Heat resistance
Heat-resistant
Heat-resistant materials include stainless steel, heat-resistant steel, ceramics, etc. Ceramics have high heat resistance and abrasion resistance, but are expensive and have poor impact resistance. Please select the appropriate material depending on the application.
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MATERIAL
original
Original material
TNK has developed two proprietary materials: 15MH — a non-magnetic stainless steel that offers high hardness, excellent wear resistance, and outstanding corrosion resistance. KWS440MA — a martensitic alloy that delivers similar performance to SUS4C, with enhanced sliding properties and reduced cost. Its wear resistance can be further improved through heat treatment.