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2124 Aluminum vs. EZ33A Magnesium

2124 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 2124 aluminum and the bottom bar is EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
44
Elongation at Break, % 5.7
2.6
Fatigue Strength, MPa 130
70
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 280
140
Tensile Strength: Ultimate (UTS), MPa 490
150
Tensile Strength: Yield (Proof), MPa 430
100

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 190
250
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 500
570
Specific Heat Capacity, J/kg-K 880
970
Thermal Conductivity, W/m-K 150
100
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
24
Electrical Conductivity: Equal Weight (Specific), % IACS 110
110

Otherwise Unclassified Properties

Base Metal Price, % relative 10
25
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.2
25
Embodied Energy, MJ/kg 150
190
Embodied Water, L/kg 1150
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
120
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
61
Strength to Weight: Axial, points 45
22
Strength to Weight: Bending, points 46
33
Thermal Diffusivity, mm2/s 58
54
Thermal Shock Resistance, points 21
9.2

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
0 to 0.1
Iron (Fe), % 0 to 0.3
0
Magnesium (Mg), % 1.2 to 1.8
91.5 to 95
Manganese (Mn), % 0.3 to 0.9
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.15
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0 to 0.25
2.0 to 3.1
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3