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3303 Aluminum vs. EN-MC21120 Magnesium

3303 aluminum belongs to the aluminum alloys classification, while EN-MC21120 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 3303 aluminum and the bottom bar is EN-MC21120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 23
2.2 to 6.7
Fatigue Strength, MPa 43
84 to 96
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 69
110 to 160
Tensile Strength: Ultimate (UTS), MPa 110
200 to 270
Tensile Strength: Yield (Proof), MPa 39
130 to 170

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 620
490
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 170
76
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
11
Electrical Conductivity: Equal Weight (Specific), % IACS 140
59

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
1.7
Embodied Carbon, kg CO2/kg material 8.1
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
5.0 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 11
180 to 320
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
69
Strength to Weight: Axial, points 11
31 to 43
Strength to Weight: Bending, points 18
43 to 53
Thermal Diffusivity, mm2/s 67
44
Thermal Shock Resistance, points 4.8
11 to 16

Alloy Composition


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Aluminum (Al), % 96.6 to 99
8.3 to 9.7
Copper (Cu), % 0.050 to 0.2
0 to 0.030
Iron (Fe), % 0 to 0.7
0 to 0.0050
Magnesium (Mg), % 0
88.6 to 91.3
Manganese (Mn), % 1.0 to 1.5
0.1 to 0.5
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.6
0 to 0.2
Zinc (Zn), % 0 to 0.3
0.35 to 1.0
Residuals, % 0 to 0.15
0 to 0.010