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EN-MC65120 Magnesium vs. 4104 Aluminum

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 4104 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN-MC65120 magnesium and the bottom bar is 4104 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
71
Elongation at Break, % 3.1
2.4
Fatigue Strength, MPa 80
42
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 92
63
Tensile Strength: Ultimate (UTS), MPa 160
110
Tensile Strength: Yield (Proof), MPa 110
60

Thermal Properties

Latent Heat of Fusion, J/g 330
540
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 590
600
Melting Onset (Solidus), °C 520
560
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 100
130
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
33
Electrical Conductivity: Equal Weight (Specific), % IACS 120
120

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.5
Density, g/cm3 1.9
2.6
Embodied Carbon, kg CO2/kg material 25
8.0
Embodied Energy, MJ/kg 190
150
Embodied Water, L/kg 930
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 140
25
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 62
54
Strength to Weight: Axial, points 23
12
Strength to Weight: Bending, points 34
20
Thermal Diffusivity, mm2/s 56
58
Thermal Shock Resistance, points 9.8
5.1

Alloy Composition


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Aluminum (Al), % 0
85.8 to 90
Bismuth (Bi), % 0
0.020 to 0.2
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
0 to 0.8
Magnesium (Mg), % 91.8 to 95.1
1.0 to 2.0
Manganese (Mn), % 0 to 0.15
0 to 0.1
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
9.0 to 10.5
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0 to 0.2
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.15