C68700 Brass vs. C47940 Brass
Both C68700 brass and C47940 brass are copper alloys. They have 85% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is C68700 brass and the bottom bar is C47940 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Poisson's Ratio | 0.32 | |
| 0.31 |
| Shear Modulus, GPa | 41 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 390 | |
| 380 to 520 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 160 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 130 |
| Melting Completion (Liquidus), °C | 970 | |
| 850 |
| Melting Onset (Solidus), °C | 930 | |
| 800 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 380 |
| Thermal Conductivity, W/m-K | 100 | |
| 110 |
| Thermal Expansion, µm/m-K | 19 | |
| 20 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 26 | |
| 25 |
| Density, g/cm3 | 8.3 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.8 |
| Embodied Energy, MJ/kg | 46 | |
| 47 |
| Embodied Water, L/kg | 340 | |
| 330 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 90 | |
| 120 to 740 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 13 | |
| 13 to 17 |
| Strength to Weight: Bending, points | 14 | |
| 14 to 17 |
| Thermal Diffusivity, mm2/s | 30 | |
| 36 |
| Thermal Shock Resistance, points | 13 | |
| 13 to 17 |
Alloy Composition
| Aluminum (Al), % | 1.8 to 2.5 | |
| 0 |
| Arsenic (As), % | 0.020 to 0.1 | |
| 0 |
| Copper (Cu), % | 76 to 79 | |
| 63 to 66 |
| Iron (Fe), % | 0 to 0.060 | |
| 0.1 to 1.0 |
| Lead (Pb), % | 0 to 0.070 | |
| 1.0 to 2.0 |
| Nickel (Ni), % | 0 | |
| 0.1 to 0.5 |
| Tin (Sn), % | 0 | |
| 1.2 to 2.0 |
| Zinc (Zn), % | 17.8 to 22.2 | |
| 28.1 to 34.6 |
| Residuals, % | 0 | |
| 0 to 0.4 |