C72700 Copper-nickel-tin alloy introduction
Cu Ni Sn is a modulated decomposition strengthened copper alloy, which has high strength, wear resistance, and excellent stress relaxation resistance. At the same time, it also has good conductivity. The alloy is widely used in the manufacturing of conductive and wear-resistant components such as bearings, bushings, bearing sleeves, high-power electronic components, and precision plug-in terminals.
| Grade | Chemical composition（%）≤ | Thickness (mm) |
||||
| ASTM | Cu | Sn | Ni | Mn | Other | 0.05-5.0 |
| C72700 | Balance | 5.5-6.5 | 8.5-9.5 | 0.05-0.3 | ≤1.0 | |
| Physical properties | ||||||
| Density (g/cm³) |
Modulus of elasticity (GPa) |
Thermal expansion coefficient (×10-6/K) |
Electrical conductivity (%IACS) |
Thermal conductivity W(m·K) |
||
| 8.89 | 130 | 17.1 | 12-14 | - | ||
| 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 | ||
| 1/4H | 145-220 | 510-620 | ≥500 | ≥16 | 0.5 | 0.5 |
| 1/4HT | ≥300 | ≥885 | ≥750 | ≥7 | - | - |
| 1/2H | 180-240 | 590-695 | ≥500 | ≥15 | 2 | 2 |
| 1/2HT | ≥280 | ≥930 | ≥790 | ≥6 | - | - |
| H | 210-270 | 685-835 | ≥580 | ≥4 | 3 | 3 |
| HT | ≥300 | ≥980 | ≥830 | ≥5 | - | - |
FAQ
Q: How long is your delivery time?
A: Generally it is within 15 days if the goods are in stock. or it is less than 30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ?
A: Yes, we could offer the sample.
Q: What ls your terms of payment？
A.30% T/T in advance ,balance before shipment. And the price depends on the material and the quantity.
If you have another question, please feel free to contact us.
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