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EN-MC21120 Magnesium vs. EN AC-45300 Aluminum

EN-MC21120 magnesium belongs to the magnesium alloys classification, while EN AC-45300 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-45300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63 to 75
94 to 120
Elastic (Young's, Tensile) Modulus, GPa 46
71
Elongation at Break, % 2.2 to 6.7
1.0 to 2.8
Fatigue Strength, MPa 84 to 96
59 to 72
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Tensile Strength: Ultimate (UTS), MPa 200 to 270
220 to 290
Tensile Strength: Yield (Proof), MPa 130 to 170
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 350
470
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
630
Melting Onset (Solidus), °C 490
590
Specific Heat Capacity, J/kg-K 990
890
Thermal Conductivity, W/m-K 76
150
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
36
Electrical Conductivity: Equal Weight (Specific), % IACS 59
120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.7
Embodied Carbon, kg CO2/kg material 22
8.0
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 15
2.7 to 5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
160 to 390
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
50
Strength to Weight: Axial, points 31 to 43
23 to 29
Strength to Weight: Bending, points 43 to 53
30 to 35
Thermal Diffusivity, mm2/s 44
60
Thermal Shock Resistance, points 11 to 16
10 to 13

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
90.2 to 94.2
Copper (Cu), % 0 to 0.030
1.0 to 1.5
Iron (Fe), % 0 to 0.0050
0 to 0.65
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 88.6 to 91.3
0.35 to 0.65
Manganese (Mn), % 0.1 to 0.5
0 to 0.55
Nickel (Ni), % 0 to 0.0020
0 to 0.25
Silicon (Si), % 0 to 0.2
4.5 to 5.5
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0.35 to 1.0
0 to 0.15
Residuals, % 0
0 to 0.15

Comparable Variants