R31538 Cobalt vs. C70250 Copper
R31538 cobalt belongs to the cobalt alloys classification, while C70250 copper belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is R31538 cobalt and the bottom bar is C70250 copper.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 220 | |
120 |
Poisson's Ratio | 0.29 | |
0.34 |
Shear Modulus, GPa | 86 | |
44 |
Tensile Strength: Ultimate (UTS), MPa | 1020 to 1360 | |
520 to 740 |
Thermal Properties
Latent Heat of Fusion, J/g | 320 | |
220 |
Melting Completion (Liquidus), °C | 1360 | |
1100 |
Melting Onset (Solidus), °C | 1290 | |
1080 |
Specific Heat Capacity, J/kg-K | 450 | |
390 |
Thermal Conductivity, W/m-K | 13 | |
170 |
Thermal Expansion, µm/m-K | 13 | |
17 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
36 to 50 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
37 to 51 |
Otherwise Unclassified Properties
Density, g/cm3 | 8.4 | |
8.9 |
Embodied Carbon, kg CO2/kg material | 8.1 | |
2.9 |
Embodied Energy, MJ/kg | 110 | |
45 |
Embodied Water, L/kg | 530 | |
310 |
Common Calculations
Stiffness to Weight: Axial, points | 15 | |
7.4 |
Stiffness to Weight: Bending, points | 24 | |
18 |
Strength to Weight: Axial, points | 34 to 45 | |
16 to 23 |
Strength to Weight: Bending, points | 27 to 32 | |
16 to 21 |
Thermal Diffusivity, mm2/s | 3.5 | |
49 |
Thermal Shock Resistance, points | 25 to 33 | |
18 to 26 |
Alloy Composition
Carbon (C), % | 0.15 to 0.35 | |
0 |
Chromium (Cr), % | 26 to 30 | |
0 |
Cobalt (Co), % | 58.7 to 68.9 | |
0 |
Copper (Cu), % | 0 | |
92.7 to 97.5 |
Iron (Fe), % | 0 to 0.75 | |
0 |
Lead (Pb), % | 0 | |
0 to 0.050 |
Magnesium (Mg), % | 0 | |
0.050 to 0.3 |
Manganese (Mn), % | 0 to 1.0 | |
0 to 0.1 |
Molybdenum (Mo), % | 5.0 to 7.0 | |
0 |
Nickel (Ni), % | 0 to 1.0 | |
2.2 to 4.2 |
Nitrogen (N), % | 0 to 0.25 | |
0 |
Silicon (Si), % | 0 to 1.0 | |
0.25 to 1.2 |
Zinc (Zn), % | 0 | |
0 to 1.0 |
Residuals, % | 0 | |
0 to 0.5 |