Cu-Cr alloy
CRC5
C18200
A copper alloy with high electrical conductivity, heat resistance and strength.
Positioning map
A copper alloy with high electrical conductivity, heat resistance and strength. It is used in high-voltage terminals, and welding tips.
Main features
- High electric and thermal conductivity (conductivity%, IACS average)
- High strength as compared with pure copper
- High heat resistance
Chemical composition
The chemical components of CRC5 are as follows.
(Weight %)
| Cr | Cu |
|---|---|
| 1.0 | Rem. |
Technical Data
Physical properties
The physical properties of CRC5 are as follows.
| Property | Representative Value |
|---|---|
| Specific Gravity (293K) | 8.9 |
| Coefficient of Thermal Expansion (×10-6/K：293～573K) |
17.8 |
| Thermal Conductivity (W/(m・K)：293K) |
330 |
| Volume Resistivity (μΩm：293K) |
0.022 |
| Electrical Conductivity (%IACS:293K) |
83 |
Mechanical properties
Mechanical properties of CRC5 are as follows.
| Temper | Rods TMT |
|---|---|
| Tensile Strength (N/mm²) |
450 |
| Elongation (%) |
15 |
| Vickers Hardness※ (HV) |
135 |
Heat resistance
The heat resistance of CRC5 is as follows. CRC5 shows higher heat resistance than MOFC-10200.
