C18700 Copper vs. C73100 Nickel Silver
Both C18700 copper and C73100 nickel silver are copper alloys. They have 75% of their average alloy composition in common.
For each property being compared, the top bar is C18700 copper and the bottom bar is C73100 nickel silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 9.0 to 9.6 | |
| 3.4 to 8.0 |
| Poisson's Ratio | 0.34 | |
| 0.32 |
| Shear Modulus, GPa | 43 | |
| 43 |
| Shear Strength, MPa | 170 to 190 | |
| 260 to 370 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 330 | |
| 450 to 640 |
| Tensile Strength: Yield (Proof), MPa | 230 to 250 | |
| 420 to 590 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 170 |
| Melting Completion (Liquidus), °C | 1080 | |
| 1030 |
| Melting Onset (Solidus), °C | 950 | |
| 1000 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 390 |
| Thermal Conductivity, W/m-K | 380 | |
| 35 |
| Thermal Expansion, µm/m-K | 17 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 98 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 99 | |
| 8.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 28 |
| Density, g/cm3 | 9.0 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 3.0 |
| Embodied Energy, MJ/kg | 41 | |
| 49 |
| Embodied Water, L/kg | 310 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 24 to 29 | |
| 21 to 35 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 240 to 280 | |
| 790 to 1560 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 9.0 to 10 | |
| 15 to 21 |
| Strength to Weight: Bending, points | 11 to 12 | |
| 15 to 20 |
| Thermal Diffusivity, mm2/s | 110 | |
| 11 |
| Thermal Shock Resistance, points | 10 to 12 | |
| 15 to 21 |
Alloy Composition
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| Copper (Cu), % | 98 to 99.2 | |
| 70.8 to 78 |
| Iron (Fe), % | 0 | |
| 0 to 0.1 |
| Lead (Pb), % | 0.8 to 1.5 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 | |
| 4.0 to 6.0 |
| Tin (Sn), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 | |
| 18 to 22 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.5 |