Product searchNB164 Ultra-Small WH W/H Wire harnesses
NB-164
Related standardsCDA C64745、JASO JC400
ApplicationsSmall automobile terminals, terminals for connector applications, spring materials, sockets, relays, switches, etc.
Copper alloy for connectors with superior strength, stress relaxation resistance,
and bending workability made possible using DOWA’s texture control technology.
Made possible using DOWA’s world-first texture control (TC) process, NB-164 is a Corson copper alloy that simultaneously delivers the high strength, stress relaxation resistance, and good bending workability necessary for small connectors.
It is the first high-strength alloy that enables notch bending with the axis parallel to the transverse direction (TD). It is ideal for box bending of small terminals.
It is registered as C64745 by the CDA (United States).
Chemical composition
[wt%]
| Ni | Si | Sn | Zn | Cu | |
|---|---|---|---|---|---|
| Typical values | 1.6 | 0.4 | 0.5 | 0.4 | Rem. |
Physical properties
| Melting point [℃] | 1083 |
|---|---|
| Density [g/cm3@20℃] | 8.9 |
| Thermal expansion coefficient [10-6/K@20-300℃] |
17.6 |
| Thermal conductivity [W/m・K@20℃] |
161 |
| Electrical conductivity [%IACS@20℃] |
40 |
| 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] |
|---|---|---|---|---|
| H | 620-740 | 650 | 3 Min. | 170-240 |
| EH | 680-800 | 715 | 1 Min. | 200-270 |
Bending workability (W bend, bending width=10mm)
NB164 is the first high-strength alloy that enables notch bending with the axis parallel to the transverse direction (TD).
Therefore, it can be processed into box-shaped female terminals with high dimensional accuracy.
| Temper | MBR/t | ||
|---|---|---|---|
| Good Way | Good Way (Notch bending) |
Bad Way | |
| H | 0 | 〇 | 0 |
| EH | 0 | 〇 | 0.7 |
*〇: No cracking at R/t = 0 (Nw/t=0.5, Nd/t=0.3)
*Please note that the values in the table are reference values and are subject to change without notice.
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Notch bending test
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Notch bending example：NB-164 EH 0.15tmm
