to Cast copper-nickel alloys and Nickel Silvers
to Properties of copper alloys
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| Cast copper alloy C97800 (Nickel-Silver 25% Ni) | ||||
| Chemical composition: Ni=25.5%, Zn=2.5%, Sn=4.8%, Pb=1.8% Cu=balance | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.86 *10³ | kg/m³ | 553 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 131 | GPa | 19000 | ksi |
| Thermal expansion (20 ºC) | 17.5*10-6 | ºCˉ¹ | 9.7*10-6 | in/(in* ºF) |
| Specific heat capacity | 377 | J/(kg*K) | 0.090 | BTU/(lb*ºF) |
| Thermal conductivity | 25.4 | W/(m*K) | 176 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 38.5*10-8 | Ohm*m | 38.5*10-6 | Ohm*cm |
| Tensile strength (sand cast) | 310 | MPa | 45000 | psi |
| Yield strength (sand cast) | 165 | MPa | 24000 | psi |
| Elongation (sand cast) | 20 | % | 20 | % |
| Fatigue strength (sand cast) | 107 | MPa | 16000 | psi |
| Hardness (sand cast) | 80 | HB(500) | 80 | HB(500) |
| Liquidus temperature | 1180 | ºC | 2156 | ºF |
| Solidus temperature | 1140 | ºC | 2084 | ºF |