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6101 Aluminum vs. EQ21A Magnesium

6101 aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is 6101 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
44
Elongation at Break, % 10 to 25
2.4
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 620
560
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 220 to 230
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 57 to 60
25
Electrical Conductivity: Equal Weight (Specific), % IACS 190 to 200
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.3
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
63
Thermal Diffusivity, mm2/s 89 to 93
62

Alloy Composition

Aluminum (Al), % 97.6 to 99.4
0
Boron (B), % 0 to 0.060
0
Chromium (Cr), % 0 to 0.030
0
Copper (Cu), % 0 to 0.1
0.050 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0.35 to 0.8
93.9 to 96.8
Manganese (Mn), % 0 to 0.030
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0.3 to 0.7
0
Silver (Ag), % 0
1.3 to 1.7
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3