High conductivity copper alloy
C151
C15100
- High current
C151 is suitable for high power lead frames due to the excellent balance of electrical conductivity, strength and heat resistance.
Positioning map
C151 is a copper alloy obtained by adding 0.1% of zirconium to pure copper. It succeeded in improving strength and heat resistance while maintaining high conductivity with a simple component.
Main features
- High electrical conductivity and thermal conductivity
- 20% higher strength compared with pure copper
- Excellent heat resistance
- Nonmagnetic
- Possible to process reflow-Sn plating with excellent surface quality and whisker resistance
Chemical composition
(Weight %)
| Zr | Cu |
|---|---|
| 0.1 | Rem. |
Technical Data
Physical properties
| Property | Representative Value |
|---|---|
| Specific Gravity（293K） | 8.9 |
| Coefficient of Thermal Expansion (×10-6/K：293～573K) |
17.7 |
| Thermal Conductivity （W/(m・K)：293K） |
360 |
| Volume Resistivity (μΩm：293K) |
0.018 |
| Electrical Conductivity（%IACS:293K） | 95 |
| Modulus of Elasticity（kN/mm²:293K） | 121 |
C151S
C151S
C151S has an excellence balance of strength, an excellence conductivity and heat resistance. An excellence we can provide those properties by our original technology.
Positioning of Alloy
C151S has higher strength than C151
Main features
- High conductivity with simple component system
- Enhanced strength and stress relaxation characteristics by improving the manufacturing process
- Contributing to miniaturization of electronic components and lower heat generation
- Possible to process reflow-Sn plating with excellent surface quality and whisker resistance
Chemical composition
The chemical components of C151S are as follows.
Excellent conductivity is exhibited with a
simple component.
(Weight %)
| Zr | Cu |
|---|---|
| 0.1 | Rem. |
Physical properties
The physical properties of C151S are as follows.
| Property | Representative Value |
|---|---|
| Specific Gravity (293K) | 8.9 |
| Coefficient of Thermal Expansion (×10-6/K：293～573K) |
17.7 |
| Thermal Conductivity (W/(m・K)：293K） |
347 |
| Volume Resistivity (μΩm：293K) |
0.020 |
| Electrical Conductivity（%IACS:293K） | 88 |
| Modulus of Elasticity（kN/mm²:293K） | 121 |
Stress relaxation resistance
C151S has the high stress relaxation characteristics that contribute to the compactness and weight reduction of electrical components (junction boxes, and the like) for recent hybrid vehicles, EV cars, and the like which require the high current.
Exposure temperature: 150℃
Sampling direction: Parallel to the rolling
direction
Bending stress: 80% of 0.2% yield strength