Adding elements such as Ni, Si, Mg to the copper matrix is a typical aging strengthening alloy. C70250 has high strength, conductivity, and the precipitation of NiSi phase makes the alloy have excellent stress relaxation resistance. It can be used for automotive connectors, lead frames, elastic connectors, etc.
| Grade | Chemical composition（%）≤ | Thickness (mm) |
||||||
| ASTM | EN | JIS | Cu | Ni | Si | Mg | Zn | 0.05-2.0 |
| C70250 | CuNi3SiMg | C7025 | Balance | 2.2-4.2 | 0.25-1.2 | 0.05-0.30 | ≤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) |
||
| 8.8 | 130 | 17.6 | 45 | 190 | ||
| 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 | ||
| TM00 | 180-220 | 620-760 | ≥550 | ≥14 | 0.0 | 0.0 |
| TM02 | 190-240 | 655-780 | ≥585 | ≥8 | 0.5 | 0.5 |
| TM03 | 210-250 | 690-810 | ≥655 | ≥7 | 1.0 | 1.0 |
| TM04 | 220-270 | 760-850 | ≥720 | ≥2 | 1.5 | 1.5 |
| TM06 | 250-290 | 800-880 | ≥780 | ≥1 | 2.0 | 3.0 |
| TM08 | 270-330 | 840-920 | ≥810 | ≥1 | 2.5 | 3.0 |
| TM10 | 300-350 | 900-1000 | ≥880 | - | 3.5 | 4.0 |
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.
Studio practice focused on modern design, interiors landscapes from our inception.
EN
