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C18070 has excellent conductivity and thermal conductivity, moderate strength and good bending performance, as well as good resistance to high temperature softening and stress relaxation.
It is widely used in mobile connection relays, sockets, high-voltage batteries, circuit breakers, etc. in the fields of automobiles, consumer electronics, and photovoltaics.
| Grade | Chemical composition（%）≤ | Thickness (mm) |
||||||
| GB | ASTM | EN | Cu | Cr | Si | Ti | Other | |
| TCr0.3-0.2-0.05 | C18070 | CuCrSiTi | ＞99.0 | 0.15-0.4 | 0.02-0.07 | 0.01-0.4 | ≤0.1 | 0.06-5.0 |
| Physical properties | |||||||
| Density (g/cm³) |
Modulus of elasticity (GPa) |
Thermal expansion coefficient (×10-6/K) |
Electrical conductivity (%IACS) |
Thermal conductivity W(m·K) |
|||
| 8.9 | 138 | 18 | 78 | 310 | |||
| Mechanical properties | Bend properties | |||||
| Temper | Hardness HV |
Tension test | 90°R/T(Thick＜0.9mm) | |||
| Tensile Strength Rm/MPa |
Yield Strength MPa |
Elongation % |
Good way | Bad way | ||
| R400 | 120-150 | 400-480 | ≥300 | ≥9 | 0 | 0 |
| R460 | 140-170 | 460-560 | ≥400 | ≥9 | 0.5 | 0.5 |
| R540 | 150-190 | 540-620 | ≥460 | ≥8 | 1 | 1 |
| R580 | 150-190 | 580-650 | ≥520 | ≥7 | 1 | 1.5 |
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