R30075 Cobalt vs. C99400 Brass
R30075 cobalt belongs to the cobalt alloys classification, while C99400 brass belongs to the copper alloys. There are 22 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 R30075 cobalt and the bottom bar is C99400 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 to 250 | |
| 120 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 82 to 98 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 1280 | |
| 460 to 550 |
| Tensile Strength: Yield (Proof), MPa | 480 to 840 | |
| 230 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 230 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1070 |
| Melting Onset (Solidus), °C | 1290 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 400 |
| Thermal Expansion, µm/m-K | 12 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 17 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 17 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 2.8 |
| Embodied Energy, MJ/kg | 110 | |
| 45 |
| Embodied Water, L/kg | 530 | |
| 310 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 560 to 1410 | |
| 230 to 590 |
| Stiffness to Weight: Axial, points | 14 to 17 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 24 to 25 | |
| 19 |
| Strength to Weight: Axial, points | 26 to 42 | |
| 15 to 17 |
| Strength to Weight: Bending, points | 22 to 31 | |
| 15 to 17 |
| Thermal Shock Resistance, points | 21 to 29 | |
| 16 to 19 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.1 | |
| 0.5 to 2.0 |
| Boron (B), % | 0 to 0.010 | |
| 0 |
| Carbon (C), % | 0 to 0.35 | |
| 0 |
| Chromium (Cr), % | 27 to 30 | |
| 0 |
| Cobalt (Co), % | 58.7 to 68 | |
| 0 |
| Copper (Cu), % | 0 | |
| 83.5 to 96.5 |
| Iron (Fe), % | 0 to 0.75 | |
| 1.0 to 3.0 |
| Lead (Pb), % | 0 | |
| 0 to 0.25 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 5.0 to 7.0 | |
| 0 |
| Nickel (Ni), % | 0 to 0.5 | |
| 1.0 to 3.5 |
| Nitrogen (N), % | 0 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.5 to 2.0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Titanium (Ti), % | 0 to 0.1 | |
| 0 |
| Tungsten (W), % | 0 to 0.2 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0.5 to 5.0 |
| Residuals, % | 0 | |
| 0 to 0.3 |