Product searchDK3 Busbars
DK-3
Related standardsCDA C19220、JASO JC100
ApplicationsHigh current terminals, switchboard opening/closing devices, male terminals, busbars, heat sink bases, lead frames, etc.
Highly conductive copper alloy with superior cost performance.
Ideal for electrical and electronic components.
DK-3 is a copper alloy with very fine precipitates of Fe-Ni-P for superior strength, heat resistance, and thermal conductivity.
Furthermore, it has great cost performance and superior solderability, press formability, and punching properties.
It is registered as C19220 by the CDA (United States).
Chemical composition
[wt%]
| Fe | Ni | Sn | P | Cu | |
|---|---|---|---|---|---|
| Typical values | 0.20 | 0.15 | 0.07 | 0.06 | Rem. |
Physical properties
| Melting point [℃] | 1083 |
|---|---|
| Density [g/cm3@20℃] | 8.9 |
| Thermal expansion coefficient [10-6/K@20-300℃] |
17.3 |
| Thermal conductivity [W/m・K@20℃] |
302 |
| Electrical conductivity [%IACS@20℃] |
78 |
| Young’s modulus [kN/mm2] | 123 |
| Poisson’s ratio | 0.33 |
Mechanical properties
| Temper | Tensile strength [N/mm2] |
0.2 % yield strength (typical value) [N/mm2] |
Elongation [%] |
Vickers hardness [HV] |
|---|---|---|---|---|
| O | 275-345 | 150 | 30 Min. | 90 Max. |
| 1/4H | 320-395 | 285 | 15 Min. | 85-125 |
| 1/2H | 370-445 | 370 | 8 Min. | 110-140 |
| H | 410-490 | 420 | 4 Min. | 120-150 |
| EH | 450-520 | 450 | 4 Min. | 130-160 |
| SH | 480-570 | – | 2 Min. | 140-180 |
Bending workability (W bend, bending width=10mm)
| Temper | MBR/t | |
|---|---|---|
| Good Way | Bad Way | |
| H | 0 | 0 |
| EH | 0 | 0 |
*Please note that the values in the table are reference values and are subject to change without notice.
