Common Cupronickel C70350
UNS C70350
Description
C70350 is a commonly used copper-nickel alloy that combines high strength, stress relaxation characteristics, and good bend workability necessary for small connectors. It is widely used in connectors that undergo complex bending, as well as high-strength heat dissipation plates in electronic devices such as smartphones. It has excellent resistance to stress relaxation. Therefore, its application in connectors and switches in automobiles is growing.
General Information
| Items | C70350 |
|---|---|
| Catalog | ACAM-Cu-A186 |
| Density | 8.81 g/cm3 |
| Melting Point | 1075 ℃ |
Chemical Component
| Cu | Pb | Zn | Fe | Ni | Co | Mg | Mn | Si |
|---|---|---|---|---|---|---|---|---|
| Balance | 0.05 max | 1.0 max | 0.20 max | 1.0-2.5 | 1.0-2.- | 0.15 max | 0.2 max | 0.5-1.2 |
* Unit: %
Typical Mechanical Properties
| Items | C70350 TM04 | C70350 TM06 |
|---|---|---|
| Tensile Strength | 770-900 MPa | 840-970 MPa |
| Yield Strength | 750-850 MPa | 810-920 MPa |
| Elongation at Break (in 254 mm) | 4% | 1% |
| Hardness HV | 220-280 | 240-300 |
Fabrication Properties
| Technique | Suitability |
|---|---|
| Brazing | Good |
| Soldering | Good |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Good |
| Coated Metal Arc Welding | Good |
| Spot Weld | Fair |
| Seam Weld | Fair |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Good |
| Forgeability Rating | 70 |
| Machinability Rating | 20 |
Material Forms
Alfa Chemistry offers copper-nickel-zinc alloy C70350 in a variety of forms, including Bar, Pipe, Plate, Rod, Sheet, Strip, Tube, etc.
Applications
Typical application of C70350 alloy include:
- Connectors
- Relays
- Switches
- Heat dissipation plates
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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