Product searchC7025
Related standardsCDA C70250、 ASTM B422、JASO JC400(TM00、TM02、TM03)
ApplicationsSemiconductor lead frames, connectors, etc.
Corson copper alloy for lead frame connectors with superior strength and conductivity.
The 1/2H and SH tempers have superior stamping workability and etching workability, making them ideal for lead frame applications that require high dimensional accuracy.
Since it possesses the same non-magnetism as pure copper, it is the best non-magnetic lead frame material for sensors, etc.
The SH temper has higher strength than conventional lead frame materials, and it helps make lead frame thinner and reduce deformation defects during QFN package manufacturing.
The TM temper has superior stress relaxation resistance and is widely used as connector material for automobiles that requires high reliability.
Chemical composition
[wt%]
| Ni | Si | Mg | Cu | |
|---|---|---|---|---|
| Typical values | 3.0 | 0.65 | 0.15 | Rem. |
Physical properties
| Melting point [℃] | 1095 |
|---|---|
| Density [g/cm3@20℃] | 8.8 |
| Thermal expansion coefficient [10-6/K@20-300℃] |
17.3 |
| Volume resistivity [μΩ・m] | 3.3ｘ10-2 (1/2H) |
| Thermal conductivity [W/m・K@20℃] |
214 (1/2H) |
| Young’s modulus [kN/mm2] | 132 (1/2H) |
| Poisson’s ratio | 0.33 |
| Magnetic properties | Non-magnetism |
Mechanical characteristics and conductivity of C7025 (TR series) for lead frames
| Temper | Tensile strength [N/mm2] |
Elongation [%] |
Vickers hardness [HV] |
Electrical conductivity (typical value) [%IACS] |
|---|---|---|---|---|
| 1/2H | 607-726 | 6 Min. | 180-220 | 52 |
| SH | 800-950 | 1 Min. | 235-300 | 47 |
Mechanical characteristics and conductivity of C7025 (TM series) for connectors
| Temper | Tensile strength [N/mm2] |
0.2 % yield strength [N/mm2] |
Elongation (typical value) [%] |
Vickers hardness [HV] |
Electrical conductivity (typical value) [%IACS] |
|---|---|---|---|---|---|
| TM00 | 620-760 | 450-620 | 16 | 180 Min. | 45 |
| TM02 | 655-830 | 590-760 | 13 | 190 Min. | 45 |
| TM03 | 690-860 | 655-830 | 11 | 200 Min. | 45 |
Bending workability (W bend, bending width=10mm)
| Temper | MBR/t | |
|---|---|---|
| Good Way | Bad Way | |
| TM00 | 1.5 | 1.25 |
| TM02 | 2.5 | 1.5 |
| TM03 | 2.5 | 2.0 |
*Please note that the values in the table are reference values and are subject to change without notice.
