Electrothermal material
From the heating wire to the precision machinery.
Responding to customer’s needs by excellent accuracy
IC advanced by miniaturizing and making to large-scale integration.An excellent characteristic in respects of thermal conductivityand the thermal expansion coefficient, etc. is requested from the material that supports the ultra-advanced technology of micro.
The Nippon Koshuha’s materials for the electronic part have low thermal expansion and good seal wear, and achieve the stable thermal expansion coefficient. It receives high appraisal as materials such as the precision machinery component, lead frames, and magnetic shielding. The electric heat materials have small difference of the volume resistivity. Moreover, the materials have corrosion resistance, heat resistance, and the workability, and are used as parts such as hot plates and resistors. Nippon Koshuha’s and electron and electrothermal material have various usages by the high quality to which the manufacturing technology with results crystallizes and are recommended.
Special alloy wire
Arrester product
| Electrothermal material | ||||||||
| Class | grade | Equivalent alloy | Principal chemical composition |
Volume resistivity |
Highest working
temperature ℃ |
Mechanical property | Example of usage | |
| Tensile strength (N/mm2) |
elongation (％) |
|||||||
|
Nicrorm |
KTA-NC1 | NCHW-1 | 80Ni-20Cr | 108±6 | 1100 | 690～780 | 20 or more | Electric heat wire |
| KTA-NC2 | NCHW-2 | 60Ni-17Cr-Fe | 112±6 | 1000 | 590～680 | 20
or more |
||
| Low thermal expansion, and seal wear material | ||||||||
| Class | Grade | Equivalent alloy | Principal chemical composition | Thermal expansion coefficient up to 100℃(×10-6/℃) | Thermal conductivity (cal/cm・S・℃) |
Volume resistivity (μΩ/cm3) |
Curie point (℃) |
Example of usage |
| Low and thermal expansion raw material | KTA-IN | INVAR | 36Ni-Fe | 0.5～2.0 | 0.033 | 80 | 225 | Precision machinery part, Bimetal low expansion material |
| KTA-SI | SUPER INVAR | 32Ni-4Co-Fe | 0.01～0.5 | – | 78 | – | ||
| Seal wear raw material | KTA-KV | KOVAR | 29Ni-17Co-Fe | 5.1～5.5 | 0.040 | 49 | 435 | Lead frame, Dumet wire, Magnetic shielding |
| KTA42N | 42Ni | 42Ni-Fe | 6.4～7.4 | 0.035 | 70 | 375 | ||
| KTA46N | 46Ni | 46Ni-Fe | 8.2～8.9 | 0.027 | 45 | 450 | ||
| KTA52N | 52Ni | 52Ni-Fe | 9.6～10.1 | 0.032 | 43 | 510 | ||
| KTA426 | 42Ni-6Cr | 42Ni-6Cr-Fe | 9.7～10.4 | 0.029 | 95 | 295 | ||
The trademark quoted on this page and the proprietary rights are as shown in the following.
| Trade mark | Name of the company | Trade mark | Name of the company |
| DISCALOY | Westinghouse Electric | KOVAR | Carpenter technology |
| ELINVAR | Imphy Alloys | MONEL | INCO Alloys |
| HASTELLOY | Haynes International | NIMONIC | INCO Alloys |
| INCONEL | INCO Alloys | NISPANC | INCO Alloys |
| INCOLOY | INCO Alloys | WASPALOY | United Technologies. |
| INVAR | Imphy Alloys |