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| Wrought copper alloy C77000 (Nickel Silver 55-18) | ||||
| Chemical composition: Ni=18%, Zn=27%, Cu=55% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.69*10³ | kg/m³ | 542 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 124 | GPa | 18000 | ksi |
| Thermal expansion (20 ºC) | 16.7*10-6 | ºCˉ¹ | 9.3*10-6 | in/(in* ºF) |
| Specific heat capacity | 377 | J/(kg*K) | 0.090 | BTU/(lb*ºF) |
| Thermal conductivity | 29.4 | W/(m*K) | 204 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 31.4*10-8 | Ohm*m | 31.4*10-6 | Ohm*cm |
| Tensile strength (annealed) | 414 | MPa | 60000 | psi |
| Yield strength (annealed) | 186 | MPa | 27000 | psi |
| Elongation (annealed) | 40 | % | 40 | % |
| Hardness (annealed) | 55 | RB | 55 | RB |
| Tensile strength (cold work) | 745 | MPa | 108000 | psi |
| Yield strength (cold work) | 621 | MPa | 90000 | psi |
| Elongation (cold work) | 2 | % | 2 | % |
| Hardness (cold work) | 96 | RB | 96 | RB |
| Annealing temperature | 600-850 | ºC | 1100-1500 | ºF |
| Liquidus temperature | 1054 | ºC | 1930 | ºF |