ZA-27 vs. ZA-12
Both ZA-27 and ZA-12 are zinc alloys. They have 83% of their average alloy composition in common.
For each property being compared, the top bar is ZA-27 and the bottom bar is ZA-12.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 100 to 120 | |
| 89 to 100 |
| Compressive (Crushing) Strength, MPa | 260 to 370 | |
| 230 to 270 |
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 83 |
| Elongation at Break, % | 2.0 to 4.5 | |
| 1.6 to 5.3 |
| Fatigue Strength, MPa | 110 to 170 | |
| 73 to 120 |
| Fracture Toughness, MPa-m1/2 | 20 to 24 | |
| 14 to 15 |
| Knoop Hardness | 120 to 140 | |
| 110 to 130 |
| Poisson's Ratio | 0.27 | |
| 0.26 |
| Rockwell B Hardness | 60 to 72 | |
| 56 to 63 |
| Shear Modulus, GPa | 31 | |
| 33 |
| Shear Strength, MPa | 230 to 330 | |
| 240 to 300 |
| Tensile Strength: Ultimate (UTS), MPa | 400 to 430 | |
| 260 to 400 |
| Tensile Strength: Yield (Proof), MPa | 260 to 370 | |
| 210 to 320 |
Thermal Properties
| Latent Heat of Fusion, J/g | 130 | |
| 120 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 100 |
| Melting Completion (Liquidus), °C | 480 | |
| 430 |
| Melting Onset (Solidus), °C | 380 | |
| 380 |
| Solidification (Pattern Maker's) Shrinkage, % | 1.3 | |
| 1.3 |
| Specific Heat Capacity, J/kg-K | 530 | |
| 450 |
| Thermal Conductivity, W/m-K | 130 | |
| 120 |
| Thermal Expansion, µm/m-K | 26 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 30 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 53 | |
| 42 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 11 |
| Density, g/cm3 | 5.0 | |
| 6.0 |
| Embodied Carbon, kg CO2/kg material | 4.2 | |
| 3.4 |
| Embodied Energy, MJ/kg | 80 | |
| 64 |
| Embodied Water, L/kg | 570 | |
| 440 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 8.1 to 18 | |
| 4.0 to 20 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 420 to 890 | |
| 260 to 620 |
| Stiffness to Weight: Axial, points | 8.6 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 28 | |
| 24 |
| Strength to Weight: Axial, points | 22 to 24 | |
| 12 to 19 |
| Strength to Weight: Bending, points | 24 to 25 | |
| 15 to 20 |
| Thermal Diffusivity, mm2/s | 47 | |
| 43 |
| Thermal Shock Resistance, points | 14 to 15 | |
| 9.4 to 14 |
Alloy Composition
| Aluminum (Al), % | 25 to 28 | |
| 10.5 to 11.5 |
| Cadmium (Cd), % | 0 to 0.0060 | |
| 0 to 0.0060 |
| Copper (Cu), % | 2.0 to 2.5 | |
| 0.5 to 1.2 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.075 |
| Lead (Pb), % | 0 to 0.0060 | |
| 0 to 0.0060 |
| Magnesium (Mg), % | 0.010 to 0.020 | |
| 0.015 to 0.030 |
| Nickel (Ni), % | 0 to 0.020 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.080 | |
| 0 to 0.060 |
| Tin (Sn), % | 0 to 0.0030 | |
| 0 to 0.0030 |
| Zinc (Zn), % | 69.3 to 73 | |
| 87.1 to 89 |