C82500 Copper vs. R30035 Cobalt
C82500 copper belongs to the copper alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is C82500 copper and the bottom bar is R30035 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 220 to 230 |
| Elongation at Break, % | 1.0 to 20 | |
| 9.0 to 46 |
| Poisson's Ratio | 0.33 | |
| 0.29 |
| Shear Modulus, GPa | 45 | |
| 84 to 89 |
| Tensile Strength: Ultimate (UTS), MPa | 550 to 1100 | |
| 900 to 1900 |
| Tensile Strength: Yield (Proof), MPa | 310 to 980 | |
| 300 to 1650 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 320 |
| Melting Completion (Liquidus), °C | 980 | |
| 1440 |
| Melting Onset (Solidus), °C | 860 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 440 |
| Thermal Conductivity, W/m-K | 130 | |
| 11 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 20 | |
| 1.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 21 | |
| 1.8 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 10 |
| Embodied Energy, MJ/kg | 160 | |
| 140 |
| Embodied Water, L/kg | 310 | |
| 410 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 11 to 94 | |
| 160 to 320 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 to 4000 | |
| 210 to 5920 |
| Stiffness to Weight: Axial, points | 7.7 | |
| 14 to 15 |
| Stiffness to Weight: Bending, points | 19 | |
| 23 to 24 |
| Strength to Weight: Axial, points | 18 to 35 | |
| 29 to 61 |
| Strength to Weight: Bending, points | 17 to 27 | |
| 24 to 39 |
| Thermal Diffusivity, mm2/s | 38 | |
| 3.0 |
| Thermal Shock Resistance, points | 19 to 38 | |
| 23 to 46 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.15 | |
| 0 |
| Beryllium (Be), % | 1.9 to 2.3 | |
| 0 |
| Boron (B), % | 0 | |
| 0 to 0.015 |
| Carbon (C), % | 0 | |
| 0 to 0.025 |
| Chromium (Cr), % | 0 to 0.1 | |
| 19 to 21 |
| Cobalt (Co), % | 0.15 to 0.7 | |
| 29.1 to 39 |
| Copper (Cu), % | 95.3 to 97.8 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 1.0 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0 to 0.15 |
| Molybdenum (Mo), % | 0 | |
| 9.0 to 10.5 |
| Nickel (Ni), % | 0 to 0.2 | |
| 33 to 37 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0.2 to 0.35 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Tin (Sn), % | 0 to 0.1 | |
| 0 |
| Titanium (Ti), % | 0 to 0.12 | |
| 0 to 1.0 |
| Zinc (Zn), % | 0 to 0.1 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |