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EN-MC21120 Magnesium vs. EN AC-44500 Aluminum

EN-MC21120 magnesium belongs to the magnesium alloys classification, while EN AC-44500 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 EN AC-44500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63 to 75
68
Elastic (Young's, Tensile) Modulus, GPa 46
72
Elongation at Break, % 2.2 to 6.7
1.1
Fatigue Strength, MPa 84 to 96
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Tensile Strength: Ultimate (UTS), MPa 200 to 270
270
Tensile Strength: Yield (Proof), MPa 130 to 170
160

Thermal Properties

Latent Heat of Fusion, J/g 350
570
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
590
Melting Onset (Solidus), °C 490
580
Specific Heat Capacity, J/kg-K 990
900
Thermal Conductivity, W/m-K 76
130
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
33
Electrical Conductivity: Equal Weight (Specific), % IACS 59
120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.5
Embodied Carbon, kg CO2/kg material 22
7.7
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 15
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
180
Stiffness to Weight: Axial, points 15
16
Stiffness to Weight: Bending, points 69
55
Strength to Weight: Axial, points 31 to 43
29
Strength to Weight: Bending, points 43 to 53
36
Thermal Diffusivity, mm2/s 44
57
Thermal Shock Resistance, points 11 to 16
13

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
83.7 to 89.5
Copper (Cu), % 0 to 0.030
0 to 0.2
Iron (Fe), % 0 to 0.0050
0 to 1.0
Magnesium (Mg), % 88.6 to 91.3
0 to 0.4
Manganese (Mn), % 0.1 to 0.5
0 to 0.55
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.2
10.5 to 13.5
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0.35 to 1.0
0 to 0.3
Residuals, % 0 to 0.010
0 to 0.25