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EQ21A Magnesium vs. 2011A Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 2011A 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 2011A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.4
6.8 to 16
Fatigue Strength, MPa 110
75 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
190 to 250
Tensile Strength: Ultimate (UTS), MPa 250
310 to 410
Tensile Strength: Yield (Proof), MPa 190
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 640
660
Melting Onset (Solidus), °C 560
550
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
33
Electrical Conductivity: Equal Weight (Specific), % IACS 120
96

Otherwise Unclassified Properties

Base Metal Price, % relative 80
11
Density, g/cm3 1.9
3.1
Embodied Carbon, kg CO2/kg material 27
7.9
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
20 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 410
140 to 670
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
44
Strength to Weight: Axial, points 37
28 to 37
Strength to Weight: Bending, points 47
33 to 40
Thermal Diffusivity, mm2/s 62
49
Thermal Shock Resistance, points 15
14 to 18

Alloy Composition

Aluminum (Al), % 0
91.5 to 95.1
Bismuth (Bi), % 0
0.2 to 0.6
Copper (Cu), % 0.050 to 0.1
4.5 to 6.0
Iron (Fe), % 0
0 to 0.5
Lead (Pb), % 0
0.2 to 0.6
Magnesium (Mg), % 93.9 to 96.8
0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 1.3 to 1.7
0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.3
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15