C68000 Brass vs. 4004 Aluminum
C68000 brass belongs to the copper alloys classification, while 4004 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 C68000 brass and the bottom bar is 4004 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 71 |
| Elongation at Break, % | 27 | |
| 2.4 |
| Poisson's Ratio | 0.3 | |
| 0.33 |
| Shear Modulus, GPa | 40 | |
| 27 |
| Tensile Strength: Ultimate (UTS), MPa | 390 | |
| 110 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 60 |
Thermal Properties
| Brazing Temperature, °C | 880 to 980 | |
| 590 to 600 |
| Latent Heat of Fusion, J/g | 170 | |
| 540 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 160 |
| Melting Completion (Liquidus), °C | 880 | |
| 600 |
| Melting Onset (Solidus), °C | 870 | |
| 560 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 910 |
| Thermal Conductivity, W/m-K | 96 | |
| 130 |
| Thermal Expansion, µm/m-K | 21 | |
| 22 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 9.5 |
| Density, g/cm3 | 8.0 | |
| 2.6 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 8.0 |
| Embodied Energy, MJ/kg | 48 | |
| 150 |
| Embodied Water, L/kg | 330 | |
| 1070 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 | |
| 2.3 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 95 | |
| 25 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 15 |
| Stiffness to Weight: Bending, points | 20 | |
| 54 |
| Strength to Weight: Axial, points | 14 | |
| 12 |
| Strength to Weight: Bending, points | 15 | |
| 20 |
| Thermal Diffusivity, mm2/s | 31 | |
| 58 |
| Thermal Shock Resistance, points | 13 | |
| 5.1 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.010 | |
| 86 to 90 |
| Copper (Cu), % | 56 to 60 | |
| 0 to 0.25 |
| Iron (Fe), % | 0.25 to 1.3 | |
| 0 to 0.8 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Magnesium (Mg), % | 0 | |
| 1.0 to 2.0 |
| Manganese (Mn), % | 0.010 to 0.5 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0.2 to 0.8 | |
| 0 |
| Silicon (Si), % | 0.040 to 0.15 | |
| 9.0 to 10.5 |
| Tin (Sn), % | 0.75 to 1.1 | |
| 0 |
| Zinc (Zn), % | 35.6 to 42.8 | |
| 0 to 0.2 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.15 |