Ohmalloy Material Co.,Ltd
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C 7025 alloy strip in thickness from 0.2mm to 1.0mm
C7025 (CuNi3SiMg) is a kind of copper alloy with high strength and high conductivity, especially in the later stage of alloy manufacturing process. This effect is like calendering again, which makes the material harder and stronger, and increases the conductivity and elongation at the same time.
Standard:
| DIN | EN | ASTM | JIS |
| CuNi3SiMg | CuNi3SiMg | C70250 | C7025 |
| Cu | Bal. |
| Ni | 2.2-4.2 |
| Si | 0.25-1.2 |
| Mg | 0.05-0.3 |
| Density(g/cm3) | 8.82 |
| Conductivity IACS%(20℃)} | 40min |
| Modulus of elasticity(KN/mm2) | 130 |
| Thermal conductivity {W/(m*K)} | 190 |
| Coefficient of thermal expansion( 10-6/℃ 20/℃ ~100/℃) | 17.3 |
| Status | Tensile strength | Elongation A50 | Hardness |
| (Rm,MPa) | (%) | (HV) | |
| R620 | 620-760 | 10min | 180-220 |
| R650 | 650-780 | 7min | 200-240 |
| R690 | 690-800 | 5min | 220-260 |
| R760 | 760-840 | 7min | 210-250 |
| Grade | Status | Thick(mm) | Width(mm) | Side bend (mm/M) | Burr (mm) |
| C70250 | R620/ R650/ R690 | 0.2-1.0 | 20-620 | <2 | <0.03 |
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