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EN-MC21120 Magnesium vs. EN AC-51200 Aluminum

EN-MC21120 magnesium belongs to the magnesium alloys classification, while EN AC-51200 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-51200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63 to 75
80
Elastic (Young's, Tensile) Modulus, GPa 46
67
Elongation at Break, % 2.2 to 6.7
1.1
Fatigue Strength, MPa 84 to 96
100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
25
Tensile Strength: Ultimate (UTS), MPa 200 to 270
220
Tensile Strength: Yield (Proof), MPa 130 to 170
150

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 490
570
Specific Heat Capacity, J/kg-K 990
910
Thermal Conductivity, W/m-K 76
92
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
22
Electrical Conductivity: Equal Weight (Specific), % IACS 59
74

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.6
Embodied Carbon, kg CO2/kg material 22
9.6
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 15
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
160
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
51
Strength to Weight: Axial, points 31 to 43
24
Strength to Weight: Bending, points 43 to 53
31
Thermal Diffusivity, mm2/s 44
39
Thermal Shock Resistance, points 11 to 16
10

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
84.5 to 92
Copper (Cu), % 0 to 0.030
0 to 0.1
Iron (Fe), % 0 to 0.0050
0 to 1.0
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 88.6 to 91.3
8.0 to 10.5
Manganese (Mn), % 0.1 to 0.5
0 to 0.55
Nickel (Ni), % 0 to 0.0020
0 to 0.1
Silicon (Si), % 0 to 0.2
0 to 2.5
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0.35 to 1.0
0 to 0.25
Residuals, % 0 to 0.010
0 to 0.15