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6101A Aluminum vs. EQ21A Magnesium

6101A aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium 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 6101A 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, % 11
2.4
Fatigue Strength, MPa 80
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 130
150
Tensile Strength: Ultimate (UTS), MPa 220
250
Tensile Strength: Yield (Proof), MPa 190
190

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 630
560
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 200
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55
25
Electrical Conductivity: Equal Weight (Specific), % IACS 180
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

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 280
410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
63
Strength to Weight: Axial, points 23
37
Strength to Weight: Bending, points 30
47
Thermal Diffusivity, mm2/s 84
62
Thermal Shock Resistance, points 10
15

Alloy Composition

Aluminum (Al), % 97.9 to 99.3
0
Copper (Cu), % 0 to 0.050
0.050 to 0.1
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 0.4 to 0.9
93.9 to 96.8
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
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3