Cupronickel (with Zn) C75700
UNS C75700
Description
C75700 is a copper-nickel alloy is the face centered cubic alpha phase, and hence it has a good combination of strength, hardness, ductility, good corrosion and tarnish-resistance performance, and this alloy has the pleasing silver-like color. Its principal applications are in spring components produced from hard rolled tempers. Accordingly, much of 12% nickel silver produced is used in the telecommunications industry.
General Information
| Items | C75700 |
|---|---|
| Catalog | ACAM-Cu-A123 |
| Density | 8.7 g/cm3 |
| Melting Point | 1038 ℃ |
Chemical Component
| Cu | Ni | Fe | Pb | Mn | Zn |
|---|---|---|---|---|---|
| 63.0-66.0 | 11.0-13.0 | 0.5 max | 0.02 max | 0.3 max | Balance |
* Unit: %
Typical Mechanical Properties
| Items | C75700 |
|---|---|
| Tensile Strength (depending on temper) | 359-641 MPa |
| Yield Strength (depending on temper) | 124-545 MPa |
| Elongation at Break (in 50.8 mm) | 48% |
| Elastic Modulus | 117 GPa |
| Poisson's Ratio | 0.34 |
| Machinability (C36000 (free-cutting brass) = 100) | 20 |
| Shear Modulus | 47 GPa |
Fabrication Properties
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Fair |
| Coated Metal Arc Welding | Not Recommended |
| Seam Weld | Fair |
| Spot Weld | Good |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Poor |
| Machinability Rating | 20 |
Material Forms
Alfa Chemistry offers copper-nickel-zinc alloy C75700 in a variety of forms, including Wire, Rod, Bar, Plate, Sheet, Strip, etc.
Applications
Typical application of C75700 alloy include:
- Corrosion-resistant structural parts: various precision instruments, springs, sockets, covers and other parts of advanced electronic components
- Others: musical instruments, tableware, glasses frames and decoration work
* 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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