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EN-MC21120 Magnesium vs. A384.0 Aluminum

EN-MC21120 magnesium belongs to the magnesium alloys classification, while A384.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN-MC21120 magnesium and the bottom bar is A384.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
74
Elongation at Break, % 2.2 to 6.7
2.5
Fatigue Strength, MPa 84 to 96
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
28
Shear Strength, MPa 110 to 160
200
Tensile Strength: Ultimate (UTS), MPa 200 to 270
330
Tensile Strength: Yield (Proof), MPa 130 to 170
170

Thermal Properties

Latent Heat of Fusion, J/g 350
550
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
610
Melting Onset (Solidus), °C 490
510
Specific Heat Capacity, J/kg-K 990
880
Thermal Conductivity, W/m-K 76
96
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
23
Electrical Conductivity: Equal Weight (Specific), % IACS 59
73

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.7
2.8
Embodied Carbon, kg CO2/kg material 22
7.5
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 15
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
180
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 69
50
Strength to Weight: Axial, points 31 to 43
32
Strength to Weight: Bending, points 43 to 53
38
Thermal Diffusivity, mm2/s 44
39
Thermal Shock Resistance, points 11 to 16
15

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
79.3 to 86.5
Copper (Cu), % 0 to 0.030
3.0 to 4.5
Iron (Fe), % 0 to 0.0050
0 to 1.3
Magnesium (Mg), % 88.6 to 91.3
0 to 0.1
Manganese (Mn), % 0.1 to 0.5
0 to 0.5
Nickel (Ni), % 0 to 0.0020
0 to 0.5
Silicon (Si), % 0 to 0.2
10.5 to 12
Tin (Sn), % 0
0 to 0.35
Zinc (Zn), % 0.35 to 1.0
0 to 1.0
Residuals, % 0 to 0.010
0 to 0.5