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EN-MC32110 Magnesium vs. 8021 Aluminum

EN-MC32110 magnesium belongs to the magnesium alloys classification, while 8021 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-MC32110 magnesium and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 49
70
Elongation at Break, % 2.2
2.3
Fatigue Strength, MPa 80
61
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 19
26
Tensile Strength: Ultimate (UTS), MPa 220
160
Tensile Strength: Yield (Proof), MPa 140
130

Thermal Properties

Latent Heat of Fusion, J/g 330
400
Maximum Temperature: Mechanical, °C 99
170
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 500
640
Specific Heat Capacity, J/kg-K 950
900
Thermal Conductivity, W/m-K 120
220
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
56
Electrical Conductivity: Equal Weight (Specific), % IACS 140
180

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.0
Density, g/cm3 2.1
2.8
Embodied Carbon, kg CO2/kg material 22
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 920
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 210
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
49
Strength to Weight: Axial, points 29
16
Strength to Weight: Bending, points 38
23
Thermal Diffusivity, mm2/s 58
88
Thermal Shock Resistance, points 12
7.0

Alloy Composition

Aluminum (Al), % 0 to 0.2
98 to 98.8
Copper (Cu), % 2.4 to 3.0
0 to 0.050
Iron (Fe), % 0 to 0.050
1.2 to 1.7
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.2
0 to 0.15
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0
0 to 0.15