C28000 Muntz Metal vs. R30155 Cobalt
C28000 Muntz Metal belongs to the copper alloys classification, while R30155 cobalt belongs to the iron alloys. There are 27 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 C28000 Muntz Metal and the bottom bar is R30155 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 210 |
| Elongation at Break, % | 10 to 45 | |
| 34 |
| Poisson's Ratio | 0.31 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 81 |
| Shear Strength, MPa | 230 to 330 | |
| 570 |
| Tensile Strength: Ultimate (UTS), MPa | 330 to 610 | |
| 850 |
| Tensile Strength: Yield (Proof), MPa | 150 to 370 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 1100 |
| Melting Completion (Liquidus), °C | 900 | |
| 1470 |
| Melting Onset (Solidus), °C | 900 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 450 |
| Thermal Conductivity, W/m-K | 120 | |
| 12 |
| Thermal Expansion, µm/m-K | 21 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 80 |
| Density, g/cm3 | 8.0 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 9.7 |
| Embodied Energy, MJ/kg | 46 | |
| 150 |
| Embodied Water, L/kg | 320 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 27 to 240 | |
| 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 670 | |
| 370 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 14 |
| Stiffness to Weight: Bending, points | 20 | |
| 23 |
| Strength to Weight: Axial, points | 11 to 21 | |
| 28 |
| Strength to Weight: Bending, points | 13 to 20 | |
| 24 |
| Thermal Diffusivity, mm2/s | 40 | |
| 3.2 |
| Thermal Shock Resistance, points | 11 to 20 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0.080 to 0.16 |
| Chromium (Cr), % | 0 | |
| 20 to 22.5 |
| Cobalt (Co), % | 0 | |
| 18.5 to 21 |
| Copper (Cu), % | 59 to 63 | |
| 0 |
| Iron (Fe), % | 0 to 0.070 | |
| 24.3 to 36.2 |
| Lead (Pb), % | 0 to 0.3 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 1.0 to 2.0 |
| Molybdenum (Mo), % | 0 | |
| 2.5 to 3.5 |
| Nickel (Ni), % | 0 | |
| 19 to 21 |
| Niobium (Nb), % | 0 | |
| 0.75 to 1.3 |
| Nitrogen (N), % | 0 | |
| 0 to 0.2 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0 | |
| 0.75 to 1.3 |
| Tungsten (W), % | 0 | |
| 2.0 to 3.0 |
| Zinc (Zn), % | 36.3 to 41 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |