AZ91A Magnesium vs. 319.0 Aluminum
AZ91A magnesium belongs to the magnesium alloys classification, while 319.0 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is AZ91A magnesium and the bottom bar is 319.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 63 | |
| 78 to 84 |
| Elastic (Young's, Tensile) Modulus, GPa | 46 | |
| 72 |
| Elongation at Break, % | 5.0 | |
| 1.8 to 2.0 |
| Fatigue Strength, MPa | 99 | |
| 76 to 80 |
| Poisson's Ratio | 0.29 | |
| 0.33 |
| Shear Modulus, GPa | 18 | |
| 27 |
| Shear Strength, MPa | 140 | |
| 170 to 210 |
| Tensile Strength: Ultimate (UTS), MPa | 240 | |
| 190 to 240 |
| Tensile Strength: Yield (Proof), MPa | 160 | |
| 110 to 180 |
Thermal Properties
| Latent Heat of Fusion, J/g | 360 | |
| 480 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 170 |
| Melting Completion (Liquidus), °C | 600 | |
| 600 |
| Melting Onset (Solidus), °C | 470 | |
| 540 |
| Specific Heat Capacity, J/kg-K | 990 | |
| 880 |
| Thermal Conductivity, W/m-K | 73 | |
| 110 |
| Thermal Expansion, µm/m-K | 26 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 10 | |
| 27 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 52 | |
| 84 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 10 |
| Density, g/cm3 | 1.7 | |
| 2.9 |
| Embodied Carbon, kg CO2/kg material | 22 | |
| 7.7 |
| Embodied Energy, MJ/kg | 160 | |
| 140 |
| Embodied Water, L/kg | 990 | |
| 1080 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 11 | |
| 3.3 to 3.9 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 | |
| 88 to 220 |
| Stiffness to Weight: Axial, points | 15 | |
| 14 |
| Stiffness to Weight: Bending, points | 69 | |
| 48 |
| Strength to Weight: Axial, points | 38 | |
| 18 to 24 |
| Strength to Weight: Bending, points | 49 | |
| 25 to 30 |
| Thermal Diffusivity, mm2/s | 42 | |
| 44 |
| Thermal Shock Resistance, points | 14 | |
| 8.6 to 11 |
Alloy Composition
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| Aluminum (Al), % | 8.3 to 9.7 | |
| 85.8 to 91.5 |
| Copper (Cu), % | 0 to 0.1 | |
| 3.0 to 4.0 |
| Iron (Fe), % | 0 | |
| 0 to 1.0 |
| Magnesium (Mg), % | 88.2 to 91.2 | |
| 0 to 0.1 |
| Manganese (Mn), % | 0.13 to 0.5 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 to 0.030 | |
| 0 to 0.35 |
| Silicon (Si), % | 0 to 0.5 | |
| 5.5 to 6.5 |
| Titanium (Ti), % | 0 | |
| 0 to 0.25 |
| Zinc (Zn), % | 0.35 to 1.0 | |
| 0 to 1.0 |
| Residuals, % | 0 | |
| 0 to 0.5 |