Zamak 7 vs. ZA-8
Both Zamak 7 and ZA-8 are zinc alloys. They have a moderately high 95% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is Zamak 7 and the bottom bar is ZA-8.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 80 | |
| 87 to 100 |
| Compressive (Crushing) Strength, MPa | 410 | |
| 210 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 86 | |
| 85 to 86 |
| Elongation at Break, % | 13 | |
| 1.3 to 8.0 |
| Fatigue Strength, MPa | 47 | |
| 51 to 100 |
| Knoop Hardness | 99 | |
| 110 to 130 |
| Poisson's Ratio | 0.25 | |
| 0.26 |
| Shear Modulus, GPa | 33 | |
| 34 |
| Shear Strength, MPa | 210 | |
| 240 to 280 |
| Tensile Strength: Ultimate (UTS), MPa | 280 | |
| 210 to 370 |
| Tensile Strength: Yield (Proof), MPa | 250 | |
| 210 to 290 |
Thermal Properties
| Latent Heat of Fusion, J/g | 120 | |
| 110 |
| Maximum Temperature: Mechanical, °C | 95 | |
| 100 |
| Melting Completion (Liquidus), °C | 390 | |
| 400 |
| Melting Onset (Solidus), °C | 380 | |
| 380 |
| Solidification (Pattern Maker's) Shrinkage, % | 1.2 | |
| 1.1 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 440 |
| Thermal Conductivity, W/m-K | 110 | |
| 120 |
| Thermal Expansion, µm/m-K | 27 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 27 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 38 | |
| 40 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 11 |
| Density, g/cm3 | 6.4 | |
| 6.3 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 3.3 |
| Embodied Energy, MJ/kg | 57 | |
| 62 |
| Embodied Water, L/kg | 380 | |
| 420 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 36 | |
| 2.8 to 28 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 260 to 490 |
| Stiffness to Weight: Axial, points | 7.5 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 23 | |
| 23 |
| Strength to Weight: Axial, points | 12 | |
| 9.3 to 17 |
| Strength to Weight: Bending, points | 15 | |
| 12 to 18 |
| Thermal Diffusivity, mm2/s | 43 | |
| 42 |
| Thermal Shock Resistance, points | 8.6 | |
| 7.6 to 13 |
Alloy Composition
| Aluminum (Al), % | 3.5 to 4.3 | |
| 8.0 to 8.8 |
| Cadmium (Cd), % | 0 to 0.0020 | |
| 0 to 0.0060 |
| Copper (Cu), % | 0 to 0.25 | |
| 0.8 to 1.3 |
| Iron (Fe), % | 0 to 0.075 | |
| 0 to 0.075 |
| Lead (Pb), % | 0 to 0.0030 | |
| 0 to 0.0060 |
| Magnesium (Mg), % | 0.0050 to 0.020 | |
| 0.015 to 0.030 |
| Nickel (Ni), % | 0.0050 to 0.020 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 | |
| 0 to 0.045 |
| Tin (Sn), % | 0 to 0.0010 | |
| 0 to 0.0030 |
| Zinc (Zn), % | 95.3 to 96.5 | |
| 89.7 to 91.2 |