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By adding Cr, Zr, and other trace elements to the copper matrix, C18150 exhibits excellent electrical, mechanical, and thermal properties, as well as excellent resistance to high-temperature softening and stress relaxation. It is widely used in high-end vehicle connectors, power electronic connectors, mobile communication connectors, lead frames, resistance welding electrode materials, continuous casting machine crystallizer liners, high thrust rocket engine combustion chambers, large motor end rings, high-speed rail contact network cables and other materials.
| Grade | Chemical composition（%）≤ | Thickness (mm) |
|||||
| EN | GB | ASTM | Cu | Cr | Zr | ||
| CuCr0.5Zr | – | C18160 | Balance | 0.2-1.2 | 0.05-0.25 | 0.08-5.0 | |
| 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 | 135 | 18.6 | 86 | 330 | |
| Mechanical properties | Bend properties | |||||
| Temper | Hardness HV |
Tension test | 90°R/T(Thick＜0.5mm) | |||
| Tensile Strength Rm/MPa |
Yield Strength MPa |
Elongation % |
Good way | Bad way | ||
| R480 | 150-190 | 480-540 | ≥450 | ≥8 | 0.5 | 1.0 |
| R540 | 160-200 | 540-630 | ≥500 | ≥4 | 1.0 | 1.5 |
| R600 | 170-200 | 600-690 | ≥560 | ≥2 | – | – |
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