C18900 Copper vs. C68000 Brass
Both C18900 copper and C68000 brass are copper alloys. They have 59% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is C18900 copper and the bottom bar is C68000 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 100 |
| Elongation at Break, % | 14 to 48 | |
| 27 |
| Poisson's Ratio | 0.34 | |
| 0.3 |
| Shear Modulus, GPa | 43 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 260 to 500 | |
| 390 |
| Tensile Strength: Yield (Proof), MPa | 67 to 390 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 120 |
| Melting Completion (Liquidus), °C | 1080 | |
| 880 |
| Melting Onset (Solidus), °C | 1020 | |
| 870 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 130 | |
| 96 |
| Thermal Expansion, µm/m-K | 17 | |
| 21 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 23 |
| Density, g/cm3 | 8.9 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.8 |
| Embodied Energy, MJ/kg | 42 | |
| 48 |
| Embodied Water, L/kg | 310 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 65 to 95 | |
| 82 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 20 to 660 | |
| 95 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 18 | |
| 20 |
| Strength to Weight: Axial, points | 8.2 to 16 | |
| 14 |
| Strength to Weight: Bending, points | 10 to 16 | |
| 15 |
| Thermal Diffusivity, mm2/s | 38 | |
| 31 |
| Thermal Shock Resistance, points | 9.3 to 18 | |
| 13 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.010 | |
| 0 to 0.010 |
| Copper (Cu), % | 97.7 to 99.15 | |
| 56 to 60 |
| Iron (Fe), % | 0 | |
| 0.25 to 1.3 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0.1 to 0.3 | |
| 0.010 to 0.5 |
| Nickel (Ni), % | 0 | |
| 0.2 to 0.8 |
| Phosphorus (P), % | 0 to 0.050 | |
| 0 |
| Silicon (Si), % | 0.15 to 0.4 | |
| 0.040 to 0.15 |
| Tin (Sn), % | 0.6 to 0.9 | |
| 0.75 to 1.1 |
| Zinc (Zn), % | 0 to 0.1 | |
| 35.6 to 42.8 |
| Residuals, % | 0 | |
| 0 to 0.5 |