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EQ21A Magnesium vs. 2030 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 2030 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EQ21A magnesium and the bottom bar is 2030 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.4
5.6 to 8.0
Fatigue Strength, MPa 110
91 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
220 to 250
Tensile Strength: Ultimate (UTS), MPa 250
370 to 420
Tensile Strength: Yield (Proof), MPa 190
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 560
510
Specific Heat Capacity, J/kg-K 980
870
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
34
Electrical Conductivity: Equal Weight (Specific), % IACS 120
99

Otherwise Unclassified Properties

Base Metal Price, % relative 80
10
Density, g/cm3 1.9
3.1
Embodied Carbon, kg CO2/kg material 27
8.0
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 410
390 to 530
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
45
Strength to Weight: Axial, points 37
33 to 38
Strength to Weight: Bending, points 47
37 to 40
Thermal Diffusivity, mm2/s 62
50
Thermal Shock Resistance, points 15
16 to 19

Alloy Composition

Aluminum (Al), % 0
88.9 to 95.2
Bismuth (Bi), % 0
0 to 0.2
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0.050 to 0.1
3.3 to 4.5
Iron (Fe), % 0
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 93.9 to 96.8
0.5 to 1.3
Manganese (Mn), % 0
0.2 to 1.0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.8
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.2
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.3