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EQ21A Magnesium vs. 6066 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 6066 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 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.4
7.8 to 17
Fatigue Strength, MPa 110
94 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
95 to 240
Tensile Strength: Ultimate (UTS), MPa 250
160 to 400
Tensile Strength: Yield (Proof), MPa 190
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 340
410
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 560
560
Specific Heat Capacity, J/kg-K 980
890
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
40
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.8
Embodied Carbon, kg CO2/kg material 27
8.3
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 410
61 to 920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
49
Strength to Weight: Axial, points 37
16 to 39
Strength to Weight: Bending, points 47
23 to 43
Thermal Diffusivity, mm2/s 62
61
Thermal Shock Resistance, points 15
6.9 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 97
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 0.050 to 0.1
0.7 to 1.2
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 93.9 to 96.8
0.8 to 1.4
Manganese (Mn), % 0
0.6 to 1.1
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0.9 to 1.8
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 0.25
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15