Corson Alloys
Corson Alloy NKC164
NKC164
High Bend Formability Copper Alloy for Electronic Parts (UNS Alloy No. C64745)
Overview
NKC164 is our proprietary Corson alloy, combining high strength, high electrical conductivity, and excellent bend formability. It is ideal for use where connectors in vehicle electronics, consumer electronics, or information devices demand especially difficult bending work. It is also available with reflow tin plating.
Table 1. NKC164 chemical composition (%)
| Cu | Ni | Si | Sn | Zn | |
|---|---|---|---|---|---|
| Standard composition | Remainder | 1.6 | 0.4 | 0.5 | 0.4 |
Table 2. Physical properties of NKC164
| Electrical conductivity | 43 | %IACS (@20℃) |
|---|---|---|
| Specific resistance | 40.1 | nΩ·m (@20℃) |
| Thermal conductivity | 170 | W/mK |
| Linear expansion coefficient | 17.6 | ×10-6/K (20 to 300℃) |
| Modulus of elasticity | 127 | GPa |
| Density | 8.87 | g/cm3 |
Table 3. Mechanical properties of NKC164
(upper: typical values, lower: specification range)
| Temper | Tensile strength (MPa) |
Yield strength (MPa) |
Elongation (%) |
Vickers hardness (Hv) |
|---|---|---|---|---|
| 1/2H | 640 (560-680) |
610 (520-670) |
8 (5min) |
190 (160-230) |
| H | 680 (620-740) |
660 (580-730) |
6 (3min) |
200 (170-240) |
| EH | 730 (680-800) |
720 (640-790) |
4 (1min) |
220 (200-270) |
Table 4. Bend formability of NKC164
(90° W bend test, test piece shape 0.2 mm thick × 10 mm wide × 30 mm long)
| Temper | MBR/t | |
|---|---|---|
| Good way | Bad way | |
| 1/2H | 0 | 0 |
| H | 0 | 0 |
| EH | 0 | 1.5 |
- MBR/t: Minimum bend radius without cracking/thickness
- Note that all numerical values shown are typical values.
Please inquire about bend formability of different thicknesses.
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