C68800 Brass vs. R30035 Cobalt
C68800 brass belongs to the copper alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 27 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 R30035 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 110 | |
220 to 230 |
Elongation at Break, % | 2.0 to 36 | |
9.0 to 46 |
Poisson's Ratio | 0.32 | |
0.29 |
Shear Modulus, GPa | 41 | |
84 to 89 |
Tensile Strength: Ultimate (UTS), MPa | 570 to 890 | |
900 to 1900 |
Tensile Strength: Yield (Proof), MPa | 390 to 790 | |
300 to 1650 |
Thermal Properties
Latent Heat of Fusion, J/g | 190 | |
320 |
Melting Completion (Liquidus), °C | 960 | |
1440 |
Melting Onset (Solidus), °C | 950 | |
1320 |
Specific Heat Capacity, J/kg-K | 400 | |
440 |
Thermal Conductivity, W/m-K | 40 | |
11 |
Thermal Expansion, µm/m-K | 19 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 18 | |
1.7 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 20 | |
1.8 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 26 | |
100 |
Density, g/cm3 | 8.2 | |
8.7 |
Embodied Carbon, kg CO2/kg material | 2.8 | |
10 |
Embodied Energy, MJ/kg | 48 | |
140 |
Embodied Water, L/kg | 350 | |
410 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 16 to 180 | |
160 to 320 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 710 to 2860 | |
210 to 5920 |
Stiffness to Weight: Axial, points | 7.3 | |
14 to 15 |
Stiffness to Weight: Bending, points | 19 | |
23 to 24 |
Strength to Weight: Axial, points | 19 to 30 | |
29 to 61 |
Strength to Weight: Bending, points | 19 to 25 | |
24 to 39 |
Thermal Diffusivity, mm2/s | 12 | |
3.0 |
Thermal Shock Resistance, points | 19 to 30 | |
23 to 46 |
Alloy Composition
Deprecated: Automatic conversion of false to array is deprecated in /home/public/compare.php on line 452
Aluminum (Al), % | 3.0 to 3.8 | |
0 |
Boron (B), % | 0 | |
0 to 0.015 |
Carbon (C), % | 0 | |
0 to 0.025 |
Chromium (Cr), % | 0 | |
19 to 21 |
Cobalt (Co), % | 0.25 to 0.55 | |
29.1 to 39 |
Copper (Cu), % | 70.8 to 75.5 | |
0 |
Iron (Fe), % | 0 to 0.2 | |
0 to 1.0 |
Lead (Pb), % | 0 to 0.050 | |
0 |
Manganese (Mn), % | 0 | |
0 to 0.15 |
Molybdenum (Mo), % | 0 | |
9.0 to 10.5 |
Nickel (Ni), % | 0 | |
33 to 37 |
Phosphorus (P), % | 0 | |
0 to 0.015 |
Silicon (Si), % | 0 | |
0 to 0.15 |
Sulfur (S), % | 0 | |
0 to 0.010 |
Titanium (Ti), % | 0 | |
0 to 1.0 |
Zinc (Zn), % | 21.3 to 24.1 | |
0 |
Residuals, % | 0 to 0.5 | |
0 |