High Conductivity Alloys
NKE010 ― High Conductivity Copper Alloy
NKE010(UNS Alloy No. C15100)
Overview
NKE010 (CDA No. C15100) is a precipitation-hardened alloy, made by adding small amounts of zirconium to copper to form and strengthen minute copper-zirconium intermetallic compounds in the matrix. The excellent strength, electrical conductivity, thermal conductivity, and stress relaxation resistance make this alloy ideal for a wide range of electronic devices. Among the uses are in-vehicle connectors (including for electric and hybrid vehicles), lead frames, bus bars, terminal pins with large current flow, and heat spreaders.
Features
- 1.High electrical conductivity and high thermal conductivity, with electrical conductivity and thermal conductivity properties close to those of pure copper (SH: 93% IACS)
- 2.Superior to pure copper in strength, thermal resistance, and stress relaxation resistance
(Temper SH: stress relaxation rate less than 20% at 150℃, 1,000 hours)
Table 1. NKE010 chemical composition (%)
| Cu | Zr | |
|---|---|---|
| Standard composition | Remainder | 0.1 |
- Note that all numerical values shown are typical values.
Table 2. Physical properties of NKE010
| Temper | SH | ESH | |
|---|---|---|---|
| Electrical conductivity | 93 | 85 | %IACS (@20℃) |
| Specific resistance | 18.6 | 20.3 | nΩ·m (@20℃) |
| Thermal conductivity | 363 | 337 | W/mK |
| Linear expansion coefficient | 17.7 | ×10-6/K (20 to 300℃) | |
| Modulus of elasticity | 123 | 113 | GPa |
| Density | 8.90 | g/cm3 | |
- Note that all numerical values shown are typical values.
Table 3. Mechanical properties of NKE010
(upper: typical values, lower: specification range)
| Temper | Tensile strength (MPa) |
Yield strength (MPa) |
Elongation (%) |
Vickers hardness (Hv) |
|---|---|---|---|---|
| SH | 470 (400-540) |
450 (380-530) |
10 (min.2) |
140 (min.125) |
| ESH | 550 (480-620) |
530 (460-600) |
8 (-) |
150 (-) |
- Note that all numerical values shown are typical values.
Stress relaxation resistance
- For reference purpose only. They are observed values, not guaranteed values.
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