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EN-MC65120 Magnesium vs. 851.0 Aluminum

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 851.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN-MC65120 magnesium and the bottom bar is 851.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
69
Elongation at Break, % 3.1
3.9 to 9.1
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Tensile Strength: Ultimate (UTS), MPa 160
130 to 140

Thermal Properties

Latent Heat of Fusion, J/g 330
410
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 590
630
Melting Onset (Solidus), °C 520
360
Specific Heat Capacity, J/kg-K 970
850
Thermal Conductivity, W/m-K 100
180
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
46
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 25
14
Density, g/cm3 1.9
3.1
Embodied Carbon, kg CO2/kg material 25
8.4
Embodied Energy, MJ/kg 190
160
Embodied Water, L/kg 930
1140

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
45
Strength to Weight: Axial, points 23
12 to 13
Strength to Weight: Bending, points 34
19 to 20
Thermal Diffusivity, mm2/s 56
69
Thermal Shock Resistance, points 9.8
6.1 to 6.3

Alloy Composition

Aluminum (Al), % 0
86.6 to 91.5
Copper (Cu), % 0 to 0.030
0.7 to 1.3
Iron (Fe), % 0 to 0.010
0 to 0.7
Magnesium (Mg), % 91.8 to 95.1
0 to 0.1
Manganese (Mn), % 0 to 0.15
0 to 0.1
Nickel (Ni), % 0 to 0.0050
0.3 to 0.7
Silicon (Si), % 0 to 0.010
2.0 to 3.0
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 0
0 to 0.2
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.3