Zamak 7 vs. Commercially Pure Zinc
Both Zamak 7 and commercially pure zinc are zinc alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 96% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is Zamak 7 and the bottom bar is commercially pure zinc.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 86 | |
| 87 |
| Elongation at Break, % | 13 | |
| 38 |
| Poisson's Ratio | 0.25 | |
| 0.25 |
| Shear Modulus, GPa | 33 | |
| 35 |
| Tensile Strength: Ultimate (UTS), MPa | 280 | |
| 97 |
| Tensile Strength: Yield (Proof), MPa | 250 | |
| 79 |
Thermal Properties
| Latent Heat of Fusion, J/g | 120 | |
| 110 |
| Maximum Temperature: Mechanical, °C | 95 | |
| 90 |
| Melting Completion (Liquidus), °C | 390 | |
| 410 |
| Melting Onset (Solidus), °C | 380 | |
| 400 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 390 |
| Thermal Conductivity, W/m-K | 110 | |
| 110 |
| Thermal Expansion, µm/m-K | 27 | |
| 26 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 27 | |
| 27 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 38 | |
| 37 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 11 |
| Density, g/cm3 | 6.4 | |
| 6.6 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 2.8 |
| Embodied Energy, MJ/kg | 57 | |
| 53 |
| Embodied Water, L/kg | 380 | |
| 340 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 36 | |
| 34 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 36 |
| Stiffness to Weight: Axial, points | 7.5 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 23 | |
| 23 |
| Strength to Weight: Axial, points | 12 | |
| 4.1 |
| Strength to Weight: Bending, points | 15 | |
| 7.1 |
| Thermal Diffusivity, mm2/s | 43 | |
| 44 |
| Thermal Shock Resistance, points | 8.6 | |
| 3.0 |
Alloy Composition
| Aluminum (Al), % | 3.5 to 4.3 | |
| 0 to 0.010 |
| Cadmium (Cd), % | 0 to 0.0020 | |
| 0 to 0.010 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.080 |
| Iron (Fe), % | 0 to 0.075 | |
| 0 to 0.020 |
| Lead (Pb), % | 0 to 0.0030 | |
| 0 to 0.030 |
| Magnesium (Mg), % | 0.0050 to 0.020 | |
| 0 |
| Nickel (Ni), % | 0.0050 to 0.020 | |
| 0 |
| Tin (Sn), % | 0 to 0.0010 | |
| 0 to 0.0030 |
| Titanium (Ti), % | 0 | |
| 0 to 0.020 |
| Zinc (Zn), % | 95.3 to 96.5 | |
| 99.827 to 100 |