C68800 Brass vs. G-CoCr28 Cobalt
C68800 brass belongs to the copper alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is C68800 brass and the bottom bar is G-CoCr28 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 210 |
| Elongation at Break, % | 2.0 to 36 | |
| 6.7 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Shear Modulus, GPa | 41 | |
| 83 |
| Tensile Strength: Ultimate (UTS), MPa | 570 to 890 | |
| 560 |
| Tensile Strength: Yield (Proof), MPa | 390 to 790 | |
| 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 1200 |
| Melting Completion (Liquidus), °C | 960 | |
| 1330 |
| Melting Onset (Solidus), °C | 950 | |
| 1270 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 470 |
| Thermal Conductivity, W/m-K | 40 | |
| 8.5 |
| Thermal Expansion, µm/m-K | 19 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 26 | |
| 100 |
| Density, g/cm3 | 8.2 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 6.2 |
| Embodied Energy, MJ/kg | 48 | |
| 84 |
| Embodied Water, L/kg | 350 | |
| 440 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 16 to 180 | |
| 31 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 710 to 2860 | |
| 160 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 15 |
| Stiffness to Weight: Bending, points | 19 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 30 | |
| 19 |
| Strength to Weight: Bending, points | 19 to 25 | |
| 19 |
| Thermal Diffusivity, mm2/s | 12 | |
| 2.2 |
| Thermal Shock Resistance, points | 19 to 30 | |
| 14 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 3.8 | |
| 0 |
| Carbon (C), % | 0 | |
| 0.050 to 0.25 |
| Chromium (Cr), % | 0 | |
| 27 to 30 |
| Cobalt (Co), % | 0.25 to 0.55 | |
| 48 to 52 |
| Copper (Cu), % | 70.8 to 75.5 | |
| 0 |
| Iron (Fe), % | 0 to 0.2 | |
| 9.7 to 24.5 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 | |
| 0 to 4.0 |
| Niobium (Nb), % | 0 | |
| 0 to 0.5 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0.5 to 1.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Zinc (Zn), % | 21.3 to 24.1 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |