C47940 Brass vs. Zamak 3
C47940 brass belongs to the copper alloys classification, while Zamak 3 belongs to the zinc alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is C47940 brass and the bottom bar is Zamak 3.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 86 |
| Elongation at Break, % | 14 to 34 | |
| 11 |
| Poisson's Ratio | 0.31 | |
| 0.25 |
| Shear Modulus, GPa | 40 | |
| 33 |
| Shear Strength, MPa | 250 to 310 | |
| 210 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 520 | |
| 280 |
| Tensile Strength: Yield (Proof), MPa | 160 to 390 | |
| 210 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 120 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 95 |
| Melting Completion (Liquidus), °C | 850 | |
| 390 |
| Melting Onset (Solidus), °C | 800 | |
| 380 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 410 |
| Thermal Conductivity, W/m-K | 110 | |
| 110 |
| Thermal Expansion, µm/m-K | 20 | |
| 27 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 11 |
| Density, g/cm3 | 8.2 | |
| 6.4 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 3.0 |
| Embodied Energy, MJ/kg | 47 | |
| 57 |
| Embodied Water, L/kg | 330 | |
| 380 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 68 to 100 | |
| 28 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 120 to 740 | |
| 260 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 19 | |
| 23 |
| Strength to Weight: Axial, points | 13 to 17 | |
| 12 |
| Strength to Weight: Bending, points | 14 to 17 | |
| 15 |
| Thermal Diffusivity, mm2/s | 36 | |
| 43 |
| Thermal Shock Resistance, points | 13 to 17 | |
| 8.6 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.5 to 4.3 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.0050 |
| Copper (Cu), % | 63 to 66 | |
| 0 to 0.25 |
| Iron (Fe), % | 0.1 to 1.0 | |
| 0 to 0.1 |
| Lead (Pb), % | 1.0 to 2.0 | |
| 0 to 0.0050 |
| Magnesium (Mg), % | 0 | |
| 0.020 to 0.060 |
| Nickel (Ni), % | 0.1 to 0.5 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 | |
| 0 to 0.030 |
| Tin (Sn), % | 1.2 to 2.0 | |
| 0 to 0.0030 |
| Zinc (Zn), % | 28.1 to 34.6 | |
| 95.3 to 96.5 |
| Residuals, % | 0 to 0.4 | |
| 0 |