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EN-MC65120 Magnesium vs. 8079 Aluminum

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 8079 aluminum belongs to the aluminum alloys. There are 29 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 EN-MC65120 magnesium and the bottom bar is 8079 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
69
Elongation at Break, % 3.1
2.2
Fatigue Strength, MPa 80
56
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Tensile Strength: Ultimate (UTS), MPa 160
150
Tensile Strength: Yield (Proof), MPa 110
120

Thermal Properties

Latent Heat of Fusion, J/g 330
400
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 590
650
Melting Onset (Solidus), °C 520
640
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 100
230
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
58
Electrical Conductivity: Equal Weight (Specific), % IACS 120
190

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.0
Density, g/cm3 1.9
2.8
Embodied Carbon, kg CO2/kg material 25
8.2
Embodied Energy, MJ/kg 190
150
Embodied Water, L/kg 930
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
3.1
Resilience: Unit (Modulus of Resilience), kJ/m3 140
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
50
Strength to Weight: Axial, points 23
15
Strength to Weight: Bending, points 34
22
Thermal Diffusivity, mm2/s 56
92
Thermal Shock Resistance, points 9.8
6.4

Alloy Composition


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Aluminum (Al), % 0
98.1 to 99.3
Copper (Cu), % 0 to 0.030
0 to 0.050
Iron (Fe), % 0 to 0.010
0.7 to 1.3
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0.050 to 0.3
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0 to 0.1
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.15