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5021 Aluminum vs. EZ33A Magnesium

5021 aluminum belongs to the aluminum alloys classification, while EZ33A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 5021 aluminum and the bottom bar is EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
44
Elongation at Break, % 1.1 to 3.4
2.6
Fatigue Strength, MPa 85 to 110
70
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 170
140
Tensile Strength: Ultimate (UTS), MPa 300 to 310
150
Tensile Strength: Yield (Proof), MPa 240 to 270
100

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 180
250
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
570
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 140
100
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
24
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
25
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.6
25
Embodied Energy, MJ/kg 150
190
Embodied Water, L/kg 1180
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
61
Strength to Weight: Axial, points 30 to 32
22
Strength to Weight: Bending, points 37
33
Thermal Diffusivity, mm2/s 57
54
Thermal Shock Resistance, points 13 to 14
9.2

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
0
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 2.2 to 2.8
91.5 to 95
Manganese (Mn), % 0.1 to 0.5
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.4
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0 to 0.15
2.0 to 3.1
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3