R30155 Cobalt vs. C43400 Brass
R30155 cobalt belongs to the iron alloys classification, while C43400 brass belongs to the copper alloys. There are 27 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 R30155 cobalt and the bottom bar is C43400 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 110 |
| Elongation at Break, % | 34 | |
| 3.0 to 49 |
| Poisson's Ratio | 0.29 | |
| 0.33 |
| Shear Modulus, GPa | 81 | |
| 42 |
| Shear Strength, MPa | 570 | |
| 250 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 850 | |
| 310 to 690 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 110 to 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 170 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1020 |
| Melting Onset (Solidus), °C | 1420 | |
| 990 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 380 |
| Thermal Conductivity, W/m-K | 12 | |
| 140 |
| Thermal Expansion, µm/m-K | 14 | |
| 19 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 28 |
| Density, g/cm3 | 8.5 | |
| 8.6 |
| Embodied Carbon, kg CO2/kg material | 9.7 | |
| 2.7 |
| Embodied Energy, MJ/kg | 150 | |
| 44 |
| Embodied Water, L/kg | 300 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 | |
| 19 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 57 to 1420 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 23 | |
| 19 |
| Strength to Weight: Axial, points | 28 | |
| 10 to 22 |
| Strength to Weight: Bending, points | 24 | |
| 12 to 20 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 41 |
| Thermal Shock Resistance, points | 21 | |
| 11 to 24 |
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 | |
| 84 to 87 |
| Iron (Fe), % | 24.3 to 36.2 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| 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 | |
| 0.4 to 1.0 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 11.4 to 15.6 |
| Residuals, % | 0 | |
| 0 to 0.5 |