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to Wrought copper-nickel alloys and Nickel Silvers
to Properties of copper alloys
(submitted by the website administration)
| Wrought copper alloy C71000 (Copper-Nickel 20%) | ||||
| Chemical composition: Ni=21%, Cu=balance | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.94 *10³ | kg/m³ | 558 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 138 | GPa | 20000 | ksi |
| Thermal expansion (20 ºC) | 16.4*10-6 | ºCˉ¹ | 9.1*10-6 | in/(in* ºF) |
| Specific heat capacity | 377 | J/(kg*K) | 0.090 | BTU/(lb*ºF) |
| Thermal conductivity | 36.3 | W/(m*K) | 252 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 26.6*10-8 | Ohm*m | 26.6*10-6 | Ohm*cm |
| Tensile strength (annealed) | 352 | MPa | 51000 | psi |
| Yield strength (annealed) | 90 | MPa | 13000 | psi |
| Elongation (annealed) | 35 | % | 35 | % |
| Hardness (annealed) | 25 | RB | 25 | RB |
| Tensile strength (cold work) | 517 | MPa | 75000 | psi |
| Yield strength (cold work) | 490 | MPa | 71000 | psi |
| Elongation (cold work) | 5 | % | 5 | % |
| Hardness (cold work) | 80 | RB | 80 | RB |
| Annealing temperature | 600-850 | ºC | 1100-1500 | ºF |
| Liquidus temperature | 1199 | ºC | 2190 | ºF |
| Solidus temperature | 1149 | ºC | 2100 | ºF |
