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EN-MC65120 Magnesium vs. 3103 Aluminum

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 3103 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC65120 magnesium and the bottom bar is 3103 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
27 to 62
Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 3.1
1.1 to 28
Fatigue Strength, MPa 80
38 to 83
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 92
68 to 130
Tensile Strength: Ultimate (UTS), MPa 160
100 to 220
Tensile Strength: Yield (Proof), MPa 110
39 to 200

Thermal Properties

Latent Heat of Fusion, J/g 330
400
Maximum Temperature: Mechanical, °C 180
190
Melting Completion (Liquidus), °C 590
660
Melting Onset (Solidus), °C 520
640
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 100
160
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
42
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.5
Density, g/cm3 1.9
2.8
Embodied Carbon, kg CO2/kg material 25
8.2
Embodied Energy, MJ/kg 190
150
Embodied Water, L/kg 930
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
2.4 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 140
11 to 280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
50
Strength to Weight: Axial, points 23
10 to 22
Strength to Weight: Bending, points 34
18 to 30
Thermal Diffusivity, mm2/s 56
64
Thermal Shock Resistance, points 9.8
4.6 to 9.9

Alloy Composition


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Aluminum (Al), % 0
96.3 to 99.1
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.030
0 to 0.1
Iron (Fe), % 0 to 0.010
0 to 0.7
Magnesium (Mg), % 91.8 to 95.1
0 to 0.3
Manganese (Mn), % 0 to 0.15
0.9 to 1.5
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0 to 0.5
Titanium (Ti), % 0
0 to 0.1
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 to 0.1
Residuals, % 0 to 0.010
0 to 0.15