ZA-27 vs. Zamak 7
Both ZA-27 and Zamak 7 are zinc alloys. They have 75% 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 ZA-27 and the bottom bar is Zamak 7.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 100 to 120 | |
| 80 |
| Compressive (Crushing) Strength, MPa | 260 to 370 | |
| 410 |
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 86 |
| Elongation at Break, % | 2.0 to 4.5 | |
| 13 |
| Fatigue Strength, MPa | 110 to 170 | |
| 47 |
| Knoop Hardness | 120 to 140 | |
| 99 |
| Poisson's Ratio | 0.27 | |
| 0.25 |
| Shear Modulus, GPa | 31 | |
| 33 |
| Shear Strength, MPa | 230 to 330 | |
| 210 |
| Tensile Strength: Ultimate (UTS), MPa | 400 to 430 | |
| 280 |
| Tensile Strength: Yield (Proof), MPa | 260 to 370 | |
| 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 120 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 95 |
| Melting Completion (Liquidus), °C | 480 | |
| 390 |
| Melting Onset (Solidus), °C | 380 | |
| 380 |
| Solidification (Pattern Maker's) Shrinkage, % | 1.3 | |
| 1.2 |
| Specific Heat Capacity, J/kg-K | 530 | |
| 410 |
| Thermal Conductivity, W/m-K | 130 | |
| 110 |
| Thermal Expansion, µm/m-K | 26 | |
| 27 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 30 | |
| 27 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 53 | |
| 38 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 11 |
| Density, g/cm3 | 5.0 | |
| 6.4 |
| Embodied Carbon, kg CO2/kg material | 4.2 | |
| 3.0 |
| Embodied Energy, MJ/kg | 80 | |
| 57 |
| Embodied Water, L/kg | 570 | |
| 380 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 8.1 to 18 | |
| 36 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 420 to 890 | |
| 370 |
| Stiffness to Weight: Axial, points | 8.6 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 28 | |
| 23 |
| Strength to Weight: Axial, points | 22 to 24 | |
| 12 |
| Strength to Weight: Bending, points | 24 to 25 | |
| 15 |
| Thermal Diffusivity, mm2/s | 47 | |
| 43 |
| Thermal Shock Resistance, points | 14 to 15 | |
| 8.6 |
Alloy Composition
| Aluminum (Al), % | 25 to 28 | |
| 3.5 to 4.3 |
| Cadmium (Cd), % | 0 to 0.0060 | |
| 0 to 0.0020 |
| Copper (Cu), % | 2.0 to 2.5 | |
| 0 to 0.25 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.075 |
| Lead (Pb), % | 0 to 0.0060 | |
| 0 to 0.0030 |
| Magnesium (Mg), % | 0.010 to 0.020 | |
| 0.0050 to 0.020 |
| Nickel (Ni), % | 0 to 0.020 | |
| 0.0050 to 0.020 |
| Silicon (Si), % | 0 to 0.080 | |
| 0 |
| Tin (Sn), % | 0 to 0.0030 | |
| 0 to 0.0010 |
| Zinc (Zn), % | 69.3 to 73 | |
| 95.3 to 96.5 |