C47940 Brass vs. 7075 Aluminum
C47940 brass belongs to the copper alloys classification, while 7075 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is C47940 brass and the bottom bar is 7075 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 70 |
| Elongation at Break, % | 14 to 34 | |
| 1.8 to 12 |
| Poisson's Ratio | 0.31 | |
| 0.32 |
| Shear Modulus, GPa | 40 | |
| 26 |
| Shear Strength, MPa | 250 to 310 | |
| 150 to 340 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 520 | |
| 240 to 590 |
| Tensile Strength: Yield (Proof), MPa | 160 to 390 | |
| 120 to 510 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 200 |
| Melting Completion (Liquidus), °C | 850 | |
| 640 |
| Melting Onset (Solidus), °C | 800 | |
| 480 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 870 |
| Thermal Conductivity, W/m-K | 110 | |
| 130 |
| Thermal Expansion, µm/m-K | 20 | |
| 23 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 10 |
| Density, g/cm3 | 8.2 | |
| 3.0 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 8.3 |
| Embodied Energy, MJ/kg | 47 | |
| 150 |
| Embodied Water, L/kg | 330 | |
| 1120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 68 to 100 | |
| 7.8 to 44 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 120 to 740 | |
| 110 to 1870 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 13 |
| Stiffness to Weight: Bending, points | 19 | |
| 46 |
| Strength to Weight: Axial, points | 13 to 17 | |
| 22 to 54 |
| Strength to Weight: Bending, points | 14 to 17 | |
| 28 to 52 |
| Thermal Diffusivity, mm2/s | 36 | |
| 50 |
| Thermal Shock Resistance, points | 13 to 17 | |
| 10 to 25 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 86.9 to 91.4 |
| Chromium (Cr), % | 0 | |
| 0.18 to 0.28 |
| Copper (Cu), % | 63 to 66 | |
| 1.2 to 2.0 |
| Iron (Fe), % | 0.1 to 1.0 | |
| 0 to 0.5 |
| Lead (Pb), % | 1.0 to 2.0 | |
| 0 |
| Magnesium (Mg), % | 0 | |
| 2.1 to 2.9 |
| Manganese (Mn), % | 0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 0.1 to 0.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.4 |
| Tin (Sn), % | 1.2 to 2.0 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.2 |
| Zinc (Zn), % | 28.1 to 34.6 | |
| 5.1 to 6.1 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.25 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.15 |