Product searchAD442 C425 Low cost
AD-442
Related standardsCDA C44250、JASO JC500
ApplicationsTerminals for connector applications, sockets, switches
Copper alloy containing zinc with conductivity and cost performance superior to phosphor bronze.
AD-442 is a copper alloy containing zinc with dramatically improved strength but the same great workability as brass.
Its strength is equal to that of phosphor bronze (C5210), but its conductivity is approximately twice as good (25% IACS), and it has better cost performance.
This copper alloy is the perfect substitute for phosphor bronze.
It is registered as C44250 by the CDA (United States).
Chemical composition
[wt%]
| Cu | Zn | Sn | |
|---|---|---|---|
| Typical values | Rem. | 25.0 | 0.80 |
Physical properties
| Melting point [℃] | 950 |
|---|---|
| Density [g/cm3@20℃] | 8.6 |
| Thermal expansion coefficient [10-6/K@20-300℃] |
20.2 |
| Thermal conductivity [W/m・K@20℃] |
109 |
| Electrical conductivity [%IACS@20℃] |
25 |
| Young’s modulus [kN/mm2] | 110 |
| Poisson’s ratio | 0.33 |
Mechanical properties
| Temper | Tensile strength [N/mm2] |
0.2 % yield strength (typical value) [N/mm2] |
Elongation [%] |
Vickers hardness [HV] |
|---|---|---|---|---|
| 3/4H | 530-610 | 530 | 8 Min. | 160-200 |
| H | 600-680 | 580 | 5 Min. | 180-220 |
| EH | 670-770 | 670 | – | 195-235 |
| SH | 730-810 | 710 | – | 200-245 |
| ES | 780-870 | 750 | – | 200 Min. |
Bending workability (W bend, bending width=10mm)
| Temper | MBR/t | |
|---|---|---|
| Good Way | Bad Way | |
| H | 0 | 1.6 |
| EH | 0 | 6.0 |
*Please note that the values in the table are reference values and are subject to change without notice.
