R30155 Cobalt vs. C48500 Brass
R30155 cobalt belongs to the iron alloys classification, while C48500 brass 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 C48500 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 100 |
| Elongation at Break, % | 34 | |
| 13 to 40 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 81 | |
| 39 |
| Shear Strength, MPa | 570 | |
| 250 to 300 |
| Tensile Strength: Ultimate (UTS), MPa | 850 | |
| 400 to 500 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 160 to 320 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 120 |
| Melting Completion (Liquidus), °C | 1470 | |
| 900 |
| Melting Onset (Solidus), °C | 1420 | |
| 890 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 380 |
| Thermal Conductivity, W/m-K | 12 | |
| 120 |
| Thermal Expansion, µm/m-K | 14 | |
| 21 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 23 |
| Density, g/cm3 | 8.5 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 9.7 | |
| 2.7 |
| Embodied Energy, MJ/kg | 150 | |
| 46 |
| Embodied Water, L/kg | 300 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 | |
| 56 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 120 to 500 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 23 | |
| 19 |
| Strength to Weight: Axial, points | 28 | |
| 14 to 17 |
| Strength to Weight: Bending, points | 24 | |
| 15 to 17 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 38 |
| Thermal Shock Resistance, points | 21 | |
| 13 to 17 |
Alloy Composition
| 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 | |
| 59 to 62 |
| Iron (Fe), % | 24.3 to 36.2 | |
| 0 to 0.1 |
| Lead (Pb), % | 0 | |
| 1.3 to 2.2 |
| 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 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0.75 to 1.3 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0.5 to 1.0 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 34.3 to 39.2 |
| Residuals, % | 0 | |
| 0 to 0.4 |