Corson Alloys
NKC8738S
High Performance Corson Alloy NKC8738S
(UNS Alloy No. C70390)
Features
- NKC8738S has same chemical composition as NKC8738, but it has low modulus of elasticity than conventional Corson Alloys through process optimizing.
- NKC8738S is a Corson alloy with excellent strength, conductivity and bend formability.
- NKC8738S contributes to the miniaturization, high density, narrow pitch, and reducing heat generation of electronic components such as connector terminals and CPU sockets.
Table 1. NKC8738S chemical composition (%)
| Cu | Ni | Co | Si | |
|---|---|---|---|---|
| Standard composition | Remainder | 3.55 | 0.25 | 0.87 |
- Note that all numerical values shown are typical values.
Table 2. Physical properties of NKC8738S
| Electrical Conductivity | 40 | %IACS (@20℃) |
|---|---|---|
| Specific resistivity | 44 | nΩ·m (@20℃) |
| Thermal Conductivity | 163 | W/mK |
| Thermal Expansion Coefficient | 17.6 | ×10-6/K (20 to 300℃) |
| Modulus of Elasticity | 100 | GPa |
| Specific Gravity | 8.83 |
- Note that all numerical values shown are typical values.
Table 3. Mechanical properties of NKC8738S (Top: Representative Value, Bottom: Specification Range)
| Temper | Tensile strength(MPa) | Yield strength(MPa) | Elongation(%) | Vickers hardness(Hv) |
|---|---|---|---|---|
| ESH | 980 (890 – 1070) |
920 (860 – 1010) |
3 (≧0.5) |
295 (260 - 370) |
- Note that all numerical values shown are typical values.
Table 4. Bend formability of NKC8738S
90°W-shaped Bending (Test piece shape: 10 mm wide × 30 mm long)
| Temper | Thickness (mm) | Minimum Bend Radius / Thickness | |
|---|---|---|---|
| Good way | Bad way | ||
| ESH | ≦0.07 | 0 | 0 |
180°U-shaped Bending (Test piece shape: 0.2 mm wide × 30 mm long)
| Temper | Thickness (mm) | Minimum Bend Radius / Thickness | |
|---|---|---|---|
| Good way | Bad way | ||
| ESH | 0.05 | 0.5 | 2.0 |
- Note that all numerical values shown are typical values.
Please inquire about bend formability of different thicknesses.
Table 5. Production Thickness Range
Please contact us for the latest stock status and inquiry of other thicknesses.
| Temper | Thickness Range (mm) |
|---|---|
| ESH | 0.04 - 0.08 |
Contact Information
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