By adding Ni, Si, and other trace elements to the copper matrix, C19005 exhibits high strength, elasticity, excellent conductivity, stress relaxation resistance, and stress corrosion resistance. It can be used to manufacture materials such as electronic connector terminals, lead frames, and automotive connectors.
| Grade | Chemical composition（%） | Thickness (mm) |
|||
| ASTM | Cu | Ni | Si | Zn | 0.08-5.0 |
| C19005 | Balance | 1.5 | 0.3 | 0.4 | |
| Physical properties | |||||
| Density (g/cm³) |
Modulus of elasticity (GPa) |
Thermal expansion coefficient (×10-6/K) |
Electrical conductivity (%IACS) |
Thermal conductivity W(m·K) |
|
| 8.88 | 130 | 17.6 | 64 | 250 | |
| Mechanical properties | Bend properties | |||||
| Temper | Hardness HV0.2 |
Tension test | 90°R/T(Thick≤0.5mm) | |||
| Tensile Strength Rm/MPa |
Yield Strength MPa |
Elongation % |
Good way | Bad way | ||
| R400 | 120-150 | 400-460 | ≥360 | ≥10 | - | - |
| R490 | 140-170 | 490-550 | ≥410 | ≥10 | - | - |
| R520 | 150-180 | 520-590 | ≥440 | ≥9 | - | - |
| R580 | 170-200 | 580-650 | ≥540 | ≥8 | - | - |
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