2218 Aluminum vs. EN-MC65120 Magnesium
2218 aluminum belongs to the aluminum alloys classification, while EN-MC65120 magnesium belongs to the magnesium alloys.
For each property being compared, the top bar is 2218 aluminum and the bottom bar is EN-MC65120 magnesium.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 95 to 110 | |
55 |
Elastic (Young's, Tensile) Modulus, GPa | 73 | |
45 |
Elongation at Break, % | 6.8 to 10 | |
3.1 |
Fatigue Strength, MPa | 110 | |
80 |
Poisson's Ratio | 0.33 | |
0.29 |
Shear Modulus, GPa | 27 | |
17 |
Shear Strength, MPa | 210 to 250 | |
92 |
Tensile Strength: Ultimate (UTS), MPa | 330 to 430 | |
160 |
Tensile Strength: Yield (Proof), MPa | 260 to 310 | |
110 |
Thermal Properties
Latent Heat of Fusion, J/g | 390 | |
330 |
Maximum Temperature: Mechanical, °C | 220 | |
180 |
Melting Completion (Liquidus), °C | 640 | |
590 |
Melting Onset (Solidus), °C | 510 | |
520 |
Specific Heat Capacity, J/kg-K | 870 | |
970 |
Thermal Conductivity, W/m-K | 140 | |
100 |
Thermal Expansion, µm/m-K | 22 | |
26 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 37 | |
25 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 110 | |
120 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 11 | |
25 |
Density, g/cm3 | 3.1 | |
1.9 |
Embodied Carbon, kg CO2/kg material | 8.2 | |
25 |
Embodied Energy, MJ/kg | 150 | |
190 |
Embodied Water, L/kg | 1130 | |
930 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 27 to 31 | |
4.4 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 450 to 650 | |
140 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 45 | |
62 |
Strength to Weight: Axial, points | 30 to 39 | |
23 |
Strength to Weight: Bending, points | 34 to 41 | |
34 |
Thermal Diffusivity, mm2/s | 52 | |
56 |
Thermal Shock Resistance, points | 15 to 19 | |
9.8 |
Alloy Composition
Aluminum (Al), % | 88.8 to 93.6 | |
0 |
Chromium (Cr), % | 0 to 0.1 | |
0 |
Copper (Cu), % | 3.5 to 4.5 | |
0 to 0.030 |
Iron (Fe), % | 0 to 1.0 | |
0 to 0.010 |
Magnesium (Mg), % | 1.2 to 1.8 | |
91.8 to 95.1 |
Manganese (Mn), % | 0 to 0.2 | |
0 to 0.15 |
Nickel (Ni), % | 1.7 to 2.3 | |
0 to 0.0050 |
Silicon (Si), % | 0 to 0.9 | |
0 to 0.010 |
Unspecified Rare Earths, % | 0 | |
2.5 to 4.0 |
Zinc (Zn), % | 0 to 0.25 | |
2.0 to 3.0 |
Zirconium (Zr), % | 0 | |
0.4 to 1.0 |
Residuals, % | 0 | |
0 to 0.010 |