R30155 Cobalt vs. C63800 Bronze
R30155 cobalt belongs to the iron alloys classification, while C63800 bronze belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is R30155 cobalt and the bottom bar is C63800 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 110 |
| Elongation at Break, % | 34 | |
| 7.9 to 41 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 81 | |
| 43 |
| Shear Strength, MPa | 570 | |
| 320 to 500 |
| Tensile Strength: Ultimate (UTS), MPa | 850 | |
| 460 to 1010 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 240 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 200 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1030 |
| Melting Onset (Solidus), °C | 1420 | |
| 1000 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 410 |
| Thermal Conductivity, W/m-K | 12 | |
| 40 |
| Thermal Expansion, µm/m-K | 14 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 30 |
| Density, g/cm3 | 8.5 | |
| 8.6 |
| Embodied Carbon, kg CO2/kg material | 9.7 | |
| 2.8 |
| Embodied Energy, MJ/kg | 150 | |
| 45 |
| Embodied Water, L/kg | 300 | |
| 330 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 23 | |
| 19 |
| Strength to Weight: Axial, points | 28 | |
| 15 to 33 |
| Strength to Weight: Bending, points | 24 | |
| 15 to 26 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 11 |
| Thermal Shock Resistance, points | 21 | |
| 17 to 36 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 2.5 to 3.1 |
| Carbon (C), % | 0.080 to 0.16 | |
| 0 |
| Chromium (Cr), % | 20 to 22.5 | |
| 0 |
| Cobalt (Co), % | 18.5 to 21 | |
| 0.25 to 0.55 |
| Copper (Cu), % | 0 | |
| 92.4 to 95.8 |
| Iron (Fe), % | 24.3 to 36.2 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 2.5 to 3.5 | |
| 0 |
| Nickel (Ni), % | 19 to 21 | |
| 0 to 0.2 |
| Niobium (Nb), % | 0.75 to 1.3 | |
| 0 |
| Nitrogen (N), % | 0 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 1.5 to 2.1 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0.75 to 1.3 | |
| 0 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0 to 0.8 |
| Residuals, % | 0 | |
| 0 to 0.5 |