Copper Titanium Alloy
C1990(HP) ― High Strength Copper Titanium Alloy
C1990(HP) High-strength copper titanium for springs
Overview
Hyper Copper Titanium (C1990(HP) ) was developed by further enhancing the properties of copper titanium alloy C1990.
Having the same chemical composition as C1990 but with higher strength and excellent bend formability, its properties equal or exceed those of beryllium copper (mill-hardened material). It is designed for use as a material in high-end switches, connectors, relays, and other electronic parts.
(We provide the Hi-Performance Series (HP) materials with the same composition as conventional products but with advanced material properties achieved by precision process control.)
Table 1. C1990(HP) chemical composition (%)
| Cu | Ti | |
|---|---|---|
| Standard composition | Remainder | 3.0 |
Table 2. Physical properties of C1990(HP)
| Electrical conductivity | 12 | %IACS (@20℃) |
|---|---|---|
| Specific resistivity | 144 | nΩ·m (@20℃) |
| Thermal conductivity | 54 | W/mK |
| Linear expansion coefficient | 18.6 | ×10-6/K (20 to 300℃) |
| Modulus of elasticity | 127 | GPa |
| Specific gravity | 8.70 |
Table 3. Mechanical properties of C1990(HP) (upper: typical values, lower: specification range)
| Temper | Tensile strength (MPa) |
Yield strength (MPa) |
Elongation (%) |
Vickers hardness (Hv) |
|---|---|---|---|---|
| EH | - 885-1080 |
860 780-930 |
17.0 ≧10.0 |
300 ≧280 |
| SH | - 910-1110 |
890 810-960 |
14.0 ≧8.0 |
320 ≧300 |
| ESH | - 1000-1180 |
1030 950-1100 |
3.0 - |
340 ≧320 |
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