C68000 Brass vs. CR012A Copper
Both C68000 brass and CR012A copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 58% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is C68000 brass and the bottom bar is CR012A copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 120 |
| Elongation at Break, % | 27 | |
| 15 |
| Poisson's Ratio | 0.3 | |
| 0.34 |
| Shear Modulus, GPa | 40 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 390 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 130 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 200 |
| Melting Completion (Liquidus), °C | 880 | |
| 1090 |
| Melting Onset (Solidus), °C | 870 | |
| 1040 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 96 | |
| 390 |
| Thermal Expansion, µm/m-K | 21 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 33 |
| Density, g/cm3 | 8.0 | |
| 9.0 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.7 |
| Embodied Energy, MJ/kg | 48 | |
| 42 |
| Embodied Water, L/kg | 330 | |
| 360 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 | |
| 29 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 95 | |
| 76 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 20 | |
| 18 |
| Strength to Weight: Axial, points | 14 | |
| 6.8 |
| Strength to Weight: Bending, points | 15 | |
| 9.0 |
| Thermal Diffusivity, mm2/s | 31 | |
| 110 |
| Thermal Shock Resistance, points | 13 | |
| 7.8 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.010 | |
| 0 |
| Bismuth (Bi), % | 0 | |
| 0 to 0.00050 |
| Copper (Cu), % | 56 to 60 | |
| 99.85 to 99.94 |
| Iron (Fe), % | 0.25 to 1.3 | |
| 0 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 0.010 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0.2 to 0.8 | |
| 0 |
| Oxygen (O), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.040 to 0.15 | |
| 0 |
| Silver (Ag), % | 0 | |
| 0.060 to 0.080 |
| Tin (Sn), % | 0.75 to 1.1 | |
| 0 |
| Zinc (Zn), % | 35.6 to 42.8 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |