Heat-resistant
Heat-resistant materials include stainless steel, heat-resistant steel, and ceramics.
Ceramics offer excellent heat and wear resistance, but they tend to be expensive and have poor impact resistance.
Please select the appropriate material based on the specific requirements of your application.
Characteristics
Heat resistance refers to the property of maintaining shape and physical properties under high-temperature environments.
If the operating environment exceeds a material’s heat resistance temperature, it may deform or experience dimensional changes, preventing it from performing its intended function. As a countermeasure against high temperatures, it is important not only to keep the operating environment within the material’s heat resistance limit, but also to select materials with inherently high heat resistance.
The graph below shows an image of heat resistance and abrasion resistance.
*If using at temperatures below 500°C, we recommend TNK's original material "15MH", which has good heat resistance and balance.
Selection of heat-resistant materials
Heat-resistant materials include stainless steel, heat-resistant steel, and ceramics.
Ceramics offer excellent heat and wear resistance, but they tend to be expensive and have poor impact resistance.
TNK handles standard stainless steels such as SUS303, SUS304 and SUS316, as well as 15MH.
Low-carbon materials can also be selected depending on the application.
From small-lot prototypes for evaluation during the early stages of development to cost optimization in mass production, we provide full support throughout the product lifecycle.TNK will be happy to assist you, so please feel free to contact us.
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
Non magnetic
Nonmagnetic
Austenitic stainless steel is non-magnetic, but it can become magnetic due to work hardening. It is very difficult to achieve both non-magnetic and wear resistance at the same time. There are many types of stainless steel, so please choose the appropriate material.
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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.