Nippon Tungsten is selling electrical contact point parts as a trade name, ELECTRO-METAL,"EM".
The electrical contact point parts include weak electrical switches for turning ON and OFF at low voltage and small current and strong electrical switches for breaking a circuit at ultrahigh voltage and large current. Furthermore, they include those used under various conditions such as in air, oil, various gases, and vacuum. We are producing many kinds of EM products according to the applications of various switches.
The electrical contact point parts include weak electrical switches for turning ON and OFF at low voltage and small current and strong electrical switches for breaking a circuit at ultrahigh voltage and large current. Furthermore, they include those used under various conditions such as in air, oil, various gases, and vacuum. We are producing many kinds of EM products according to the applications of various switches.
Electrical/Electronic Contact Materials
These alloys combine copper and silver,which have excellent electrical conductivity, and tungsten,which has high heat resistance,as a contact point.
We offer a wide range of materials customized in terms of sliding properties, oxidation resistance, etc., depending on the intended use.
These alloys combine copper and silver,which have excellent electrical conductivity, and tungsten,which has high heat resistance,as a contact point.
We offer a wide range of materials customized in terms of sliding properties, oxidation resistance, etc., depending on the intended use.
| Material code | Material | Density [g/cm3] | Hardness | Transverse rupture strength [MPa] | Young's modulus [GPa] | Coefficient of thermal expansion [X10-6/K] | Thermal conductivity [W/m•K] | Electrical conductivity [IACS%] |
|---|---|---|---|---|---|---|---|---|
| C10B2 | W-Cu | 16.8 | 110(HRB) | 1713 | 313.6 | 6.5 | 160 | 30 |
| C30A2 | W-Cu | 14.2 | 93(HRB) | 1271.1 | 205.8 | 10.2 | 258 | 48 |
| C50A2 | W-Cu | 12.2 | 81(HRB) | - | - | - | - | 63 |
| S27B2 | W-Ag | 15.5 | 98(HRB) | - | - | - | - | 51 |
| S35A2 | W-Ag | 14.8 | 91(HRB) | - | - | 9.4 | 233 | 53 |
| HS2 | Ag-WC | 11.8 | 98(HRF) | - | - | - | - | 58 |
| HD-8 | Ag-WC-C | 9.1 | 50(HRF) | - | - | - | - | 50 |
| HD-8X | Ag-WC-C | 9.4 | 45(HRF) | Around 200 | - | - | - | 60 |
| N10 | Ag-Ni | 10.1 | 66(HR-15T) | - | - | - | - | 85 |
| GS3 | Ag-C | 9.2 | 75(HR-15T) | - | - | - | - | 75 |
