C70250 Copper vs. C79200 Nickel Silver
Both C70250 copper and C79200 nickel silver are copper alloys. They have 67% of their average alloy composition in common.
For each property being compared, the top bar is C70250 copper and the bottom bar is C79200 nickel silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 120 |
| Poisson's Ratio | 0.34 | |
| 0.32 |
| Shear Modulus, GPa | 44 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 740 | |
| 480 to 540 |
Thermal Properties
| Latent Heat of Fusion, J/g | 220 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 210 | |
| 170 |
| Melting Completion (Liquidus), °C | 1100 | |
| 950 |
| Melting Onset (Solidus), °C | 1080 | |
| 910 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 170 | |
| 42 |
| Thermal Expansion, µm/m-K | 17 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 36 to 50 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 37 to 51 | |
| 30 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 30 |
| Density, g/cm3 | 8.9 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.9 | |
| 3.6 |
| Embodied Energy, MJ/kg | 45 | |
| 56 |
| Embodied Water, L/kg | 310 | |
| 310 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.4 | |
| 7.7 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 16 to 23 | |
| 16 to 18 |
| Strength to Weight: Bending, points | 16 to 21 | |
| 16 to 18 |
| Thermal Diffusivity, mm2/s | 49 | |
| 13 |
| Thermal Shock Resistance, points | 18 to 26 | |
| 16 to 18 |
Alloy Composition
| Copper (Cu), % | 92.7 to 97.5 | |
| 59 to 66.5 |
| Iron (Fe), % | 0 | |
| 0 to 0.25 |
| Lead (Pb), % | 0 to 0.050 | |
| 0.8 to 1.4 |
| Magnesium (Mg), % | 0.050 to 0.3 | |
| 0 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 0.5 |
| Nickel (Ni), % | 2.2 to 4.2 | |
| 11 to 13 |
| Silicon (Si), % | 0.25 to 1.2 | |
| 0 |
| Zinc (Zn), % | 0 to 1.0 | |
| 17.9 to 29.2 |
| Residuals, % | 0 | |
| 0 to 0.5 |