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EN-MC21120 Magnesium vs. 515.0 Aluminum

EN-MC21120 magnesium belongs to the magnesium alloys classification, while 515.0 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN-MC21120 magnesium and the bottom bar is 515.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
70
Elongation at Break, % 2.2 to 6.7
10
Fatigue Strength, MPa 84 to 96
130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 110 to 160
190
Tensile Strength: Ultimate (UTS), MPa 200 to 270
280

Thermal Properties

Latent Heat of Fusion, J/g 350
470
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
620
Melting Onset (Solidus), °C 490
620
Specific Heat Capacity, J/kg-K 990
900
Thermal Expansion, µm/m-K 26
23

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.6
Embodied Carbon, kg CO2/kg material 22
8.4
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1120

Common Calculations

Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 69
52
Strength to Weight: Axial, points 31 to 43
30
Strength to Weight: Bending, points 43 to 53
36
Thermal Shock Resistance, points 11 to 16
13

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
93.6 to 96.6
Copper (Cu), % 0 to 0.030
0 to 0.2
Iron (Fe), % 0 to 0.0050
0 to 1.3
Magnesium (Mg), % 88.6 to 91.3
2.5 to 4.0
Manganese (Mn), % 0.1 to 0.5
0.4 to 0.6
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.2
0.5 to 10
Zinc (Zn), % 0.35 to 1.0
0 to 0.1
Residuals, % 0 to 0.010
0 to 0.15