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Formula: Cu 55/Ni 45
Form: Disk
Material: Constantan®
Commodity: Alloys
Hazard Pictogram:
GHS07, GHS08
The Constantan® Disk is offered in 1235 variations. Constantan is a copper-nickel alloy low electrical resistivity, high thermal conductivity and excellent resistance to corrosion. These properties make it ideal for applications like strain gauges, thermocouples, and resistance thermometers in scientific instrumentation and industrial processing. With so many options available, our Constantan disks meet the specific needs of research, development and manufacturing projects.
Health hazard/Hazardous to the ozone layer
Serious health hazard
Tolerances
Disk
| Thickness | >0.05mm | ±10% |
|---|---|---|
| Thickness | <0.01mm | ±25% |
| Thickness | 0.01mm - 0.05mm | ±15% |
Material Properties for Alloys
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Brinell | 100-300 |
| Elongation at break( % ) | 45 |
| Modulus of elasticity( GPa ) | 162 |
| Izod impact strength( J m⁻¹ ) | 107 |
| Tensile strength( MPa ) | 400-590 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 52 |
| Temperature coefficient( K⁻¹ ) | 0.00002+/- |
Thermal Properties
| Element | Value |
|---|---|
| Maximum use temperature in air( C ) | 500 |
| Melting point( C ) | 1225-1300 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 19.5@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 14.9@20-100°C |
Physical Properties
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 8.9 |
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