Cu-Cr-Zr-based copper alloy
CrZr
C18150
- High-Current Applications
- High Heat Resistance & High Conductivity
A copper alloy that combines high strength, high conductivity, and excellent heat resistance. Its superior conductivity helps dissipate heat generated in high-current applications, making it suitable for a wide range of electrical and current-carrying components.
Positioning map
Main features
- It has very high strength and heat resistance.
- It has high electrical and thermal conductivity among copper alloys.
- It has resistance to hydrogen embrittlement, allows it to maintain quality even during processing that involves thermal history.
Chemical composition
The chemical composition of CrZr is as follows.
（Weight%）
| Cr | Zr | Cu |
|---|---|---|
| 0.5-1.5 | 0.02-0.20 | Rem. |
Technical Data
Physical properties
The physical properties of CrZr are as follows.
| Property | Typical value |
|---|---|
| Specific Gravity (293K) | 8.89 |
| Coefficient of Thermal Expansion (×10-6/K：293～573K) |
17.1 |
| Thermal Conductivity (W/(m・K)：293K) |
324 |
| Volume Resistivity (μΩm：293K) |
0.0215 |
| Electrical Conductivity (%IACS:293K) |
80 |
| Modulus of Elasticity（kN/mm²:293K） | 117 |
Mechanical properties
The mechanical properties of CrZr are as follows.
| Typical value | |
|---|---|
| Tensile Strength (N/mm²) |
415 |
| Elongation (%) |
38 |
| Vickers Hardness* (HV) |
130 |
Heat resistance
CrZr isochronal softening characteristics are shown on the right.
It has far higher heat resistance than pure copper and can be used in high-temperature environments.
