R30155 Cobalt vs. C61000 Bronze
R30155 cobalt belongs to the iron alloys classification, while C61000 bronze belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is R30155 cobalt and the bottom bar is C61000 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 110 |
| Elongation at Break, % | 34 | |
| 29 to 50 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 81 | |
| 42 |
| Shear Strength, MPa | 570 | |
| 280 to 300 |
| Tensile Strength: Ultimate (UTS), MPa | 850 | |
| 390 to 460 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 150 to 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 220 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 210 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1040 |
| Melting Onset (Solidus), °C | 1420 | |
| 990 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 420 |
| Thermal Conductivity, W/m-K | 12 | |
| 69 |
| Thermal Expansion, µm/m-K | 14 | |
| 18 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 29 |
| Density, g/cm3 | 8.5 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 9.7 | |
| 3.0 |
| Embodied Energy, MJ/kg | 150 | |
| 49 |
| Embodied Water, L/kg | 300 | |
| 370 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 | |
| 110 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 100 to 160 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 23 | |
| 19 |
| Strength to Weight: Axial, points | 28 | |
| 13 to 15 |
| Strength to Weight: Bending, points | 24 | |
| 14 to 16 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 19 |
| Thermal Shock Resistance, points | 21 | |
| 14 to 16 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 6.0 to 8.5 |
| Carbon (C), % | 0.080 to 0.16 | |
| 0 |
| Chromium (Cr), % | 20 to 22.5 | |
| 0 |
| Cobalt (Co), % | 18.5 to 21 | |
| 0 |
| Copper (Cu), % | 0 | |
| 90.2 to 94 |
| Iron (Fe), % | 24.3 to 36.2 | |
| 0 to 0.5 |
| Lead (Pb), % | 0 | |
| 0 to 0.020 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 2.5 to 3.5 | |
| 0 |
| Nickel (Ni), % | 19 to 21 | |
| 0 |
| 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 | |
| 0 to 0.1 |
| 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 0.2 |
| Residuals, % | 0 | |
| 0 to 0.5 |