C99400 Brass vs. R31539 Cobalt
C99400 brass belongs to the copper alloys classification, while R31539 cobalt belongs to the cobalt 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 C99400 brass and the bottom bar is R31539 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 220 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 44 | |
| 86 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 550 | |
| 1000 to 1340 |
| Tensile Strength: Yield (Proof), MPa | 230 to 370 | |
| 590 to 940 |
Thermal Properties
| Latent Heat of Fusion, J/g | 230 | |
| 320 |
| Melting Completion (Liquidus), °C | 1070 | |
| 1360 |
| Melting Onset (Solidus), °C | 1020 | |
| 1290 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 450 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 17 | |
| 2.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 17 | |
| 2.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.7 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 8.2 |
| Embodied Energy, MJ/kg | 45 | |
| 110 |
| Embodied Water, L/kg | 310 | |
| 530 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 230 to 590 | |
| 780 to 2000 |
| Stiffness to Weight: Axial, points | 7.5 | |
| 15 |
| Stiffness to Weight: Bending, points | 19 | |
| 24 |
| Strength to Weight: Axial, points | 15 to 17 | |
| 33 to 44 |
| Strength to Weight: Bending, points | 15 to 17 | |
| 27 to 32 |
| Thermal Shock Resistance, points | 16 to 19 | |
| 24 to 32 |
Alloy Composition
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| Aluminum (Al), % | 0.5 to 2.0 | |
| 0.3 to 1.0 |
| Carbon (C), % | 0 | |
| 0 to 0.14 |
| Chromium (Cr), % | 0 | |
| 26 to 30 |
| Cobalt (Co), % | 0 | |
| 57.7 to 68.7 |
| Copper (Cu), % | 83.5 to 96.5 | |
| 0 |
| Iron (Fe), % | 1.0 to 3.0 | |
| 0 to 0.75 |
| Lanthanum (La), % | 0 | |
| 0.030 to 0.2 |
| Lead (Pb), % | 0 to 0.25 | |
| 0 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 5.0 to 7.0 |
| Nickel (Ni), % | 1.0 to 3.5 | |
| 0 to 1.0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.25 |
| Silicon (Si), % | 0.5 to 2.0 | |
| 0 to 1.0 |
| Zinc (Zn), % | 0.5 to 5.0 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |