Copper Alloy Foil
Titanium Copper Foil ― alternative to Cu-Ni-Sn foil
Overview
- A Hyper titanium copper foil (model code C1990HP) offering the highest level of strength of any copper alloy.
- The high strength and excellent spring properties make it an alternative to beryllium copper foil.
- Higher thickness precision than conventional materials is achieved by optimizing the manufacturing processes.
This higher thickness precision in turn improves the stability of spring properties. - All production processes from metal melting to product-width slitting take place in our Kurami Works, enabling quick delivery time.
Features
- High strength
- Excellent spring properties
- Can be used in place of beryllium copper
- High thickness precision
- High reliability
- Excellent stress relaxation resistance
- Excellent fatigue properties
- Full-process production for quick delivery
Manufacturable thickness (typical dimensions)
- 30µm~100µm
- Maximum width 450 mm
Typical applications
- Connectors
- Spring material in autofocus camera modules for mobile phones
Table 1. C1990HP foil chemical composition (%)
| Ti | Cu + Ti | |
|---|---|---|
| Standard composition | 2.90~3.50 | ≧ 99.5 |
Table 2. Physical properties of C1990HP foil
| Electrical conductivity | 10 | %IACS (@20℃) |
|---|---|---|
| Specific resistance | 172 | nΩ·m (@20℃) |
| Thermal conductivity | 47 | W/mK |
| Linear expansion coefficient | 18.6 | ×10-6/K (20 to 300℃) |
| Modulus of elasticity | XSH : 115 | GPa |
| GSH : 127 | ||
| Density | 8.70 | g/cm3 |
Table 3. Mechanical properties of C1990HP foil
(upper: typical values, lower: specification range)
| Temper | Tensile strength (MPa) |
Vickers hardness (Hv) |
|---|---|---|
| C1990HP-XSH | 1150 1050-1400 |
340 310-380 |
| C1990HP-GSH | 1400 1300-1600 |
400 350-450 |
Figure 1. Histogram of thickness distribution in the longitudinal direction (comparison of high thickness precision material with conventional material; thickness 30µm)
- Data obtained by X-ray measurements of thickness at the center of the transverse direction (perpendicular to the rolling direction) of the mother coil, taken every 0.01 seconds for approximately 1,000 meters.
- The values shown are typical values and are not intended as specifications.
Figure 2. Thickness distribution in the transverse direction (high thickness precision material N = 3, thickness 30 µm)
- Thickness distribution was measured in the transverse direction using a direct contact thickness gauge.
- The values shown are typical values and are not intended as specifications.
Contact Information
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