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EN-MC21120 Magnesium vs. EN AC-45000 Aluminum

EN-MC21120 magnesium belongs to the magnesium alloys classification, while EN AC-45000 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-45000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63 to 75
77
Elastic (Young's, Tensile) Modulus, GPa 46
73
Elongation at Break, % 2.2 to 6.7
1.1
Fatigue Strength, MPa 84 to 96
75
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Tensile Strength: Ultimate (UTS), MPa 200 to 270
180
Tensile Strength: Yield (Proof), MPa 130 to 170
110

Thermal Properties

Latent Heat of Fusion, J/g 350
470
Maximum Temperature: Mechanical, °C 130
180
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 490
520
Specific Heat Capacity, J/kg-K 990
870
Thermal Conductivity, W/m-K 76
120
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
27
Electrical Conductivity: Equal Weight (Specific), % IACS 59
81

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.7
3.0
Embodied Carbon, kg CO2/kg material 22
7.7
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 15
1.7
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
80
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
47
Strength to Weight: Axial, points 31 to 43
17
Strength to Weight: Bending, points 43 to 53
24
Thermal Diffusivity, mm2/s 44
47
Thermal Shock Resistance, points 11 to 16
8.0

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
82.2 to 91.8
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0 to 0.030
3.0 to 5.0
Iron (Fe), % 0 to 0.0050
0 to 1.0
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 88.6 to 91.3
0 to 0.55
Manganese (Mn), % 0.1 to 0.5
0.2 to 0.65
Nickel (Ni), % 0 to 0.0020
0 to 0.45
Silicon (Si), % 0 to 0.2
5.0 to 7.0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0.35 to 1.0
0 to 2.0
Residuals, % 0
0 to 0.35