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EN-MC21310 Magnesium vs. 5049 Aluminum

EN-MC21310 magnesium belongs to the magnesium alloys classification, while 5049 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC21310 magnesium and the bottom bar is 5049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
52 to 88
Elastic (Young's, Tensile) Modulus, GPa 45
69
Elongation at Break, % 9.0
2.0 to 18
Fatigue Strength, MPa 86
79 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 120
130 to 190
Tensile Strength: Ultimate (UTS), MPa 200
210 to 330
Tensile Strength: Yield (Proof), MPa 120
91 to 280

Thermal Properties

Latent Heat of Fusion, J/g 360
400
Maximum Temperature: Mechanical, °C 100
190
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 560
620
Specific Heat Capacity, J/kg-K 1000
900
Thermal Conductivity, W/m-K 89
140
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
35
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.6
2.7
Embodied Carbon, kg CO2/kg material 23
8.5
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 970
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16
6.0 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 160
59 to 570
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 73
50
Strength to Weight: Axial, points 34
22 to 34
Strength to Weight: Bending, points 47
29 to 39
Thermal Diffusivity, mm2/s 55
56
Thermal Shock Resistance, points 12
9.3 to 15

Alloy Composition

Aluminum (Al), % 1.8 to 2.6
94.7 to 97.9
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0 to 0.010
0 to 0.1
Iron (Fe), % 0 to 0.0050
0 to 0.5
Magnesium (Mg), % 95.2 to 97.4
1.6 to 2.5
Manganese (Mn), % 0.1 to 0.7
0.5 to 1.1
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.7 to 1.2
0 to 0.4
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.2
0 to 0.2
Residuals, % 0 to 0.010
0 to 0.15