R30155 Cobalt vs. C67500 Bronze
R30155 cobalt belongs to the iron alloys classification, while C67500 bronze belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is R30155 cobalt and the bottom bar is C67500 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 100 |
| Elongation at Break, % | 34 | |
| 14 to 33 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 81 | |
| 40 |
| Shear Strength, MPa | 570 | |
| 270 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 850 | |
| 430 to 580 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 170 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 120 |
| Melting Completion (Liquidus), °C | 1470 | |
| 890 |
| Melting Onset (Solidus), °C | 1420 | |
| 870 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 390 |
| Thermal Conductivity, W/m-K | 12 | |
| 110 |
| Thermal Expansion, µm/m-K | 14 | |
| 21 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 23 |
| Density, g/cm3 | 8.5 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 9.7 | |
| 2.8 |
| Embodied Energy, MJ/kg | 150 | |
| 47 |
| Embodied Water, L/kg | 300 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 | |
| 61 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 130 to 650 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 23 | |
| 20 |
| Strength to Weight: Axial, points | 28 | |
| 15 to 20 |
| Strength to Weight: Bending, points | 24 | |
| 16 to 19 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 34 |
| Thermal Shock Resistance, points | 21 | |
| 14 to 19 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.25 |
| 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 | |
| 57 to 60 |
| Iron (Fe), % | 24.3 to 36.2 | |
| 0.8 to 2.0 |
| Lead (Pb), % | 0 | |
| 0 to 0.2 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0.050 to 0.5 |
| 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 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0.75 to 1.3 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0.5 to 1.5 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 35.1 to 41.7 |
| Residuals, % | 0 | |
| 0 to 0.5 |