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6105 Aluminum vs. EQ21A Magnesium

6105 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 6105 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, % 9.0 to 16
2.4
Fatigue Strength, MPa 95 to 130
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 120 to 170
150
Tensile Strength: Ultimate (UTS), MPa 190 to 280
250
Tensile Strength: Yield (Proof), MPa 120 to 270
190

Thermal Properties

Latent Heat of Fusion, J/g 410
340
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 600
560
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 180 to 190
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46 to 50
25
Electrical Conductivity: Equal Weight (Specific), % IACS 150 to 170
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 25 to 27
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 550
410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
63
Strength to Weight: Axial, points 20 to 29
37
Strength to Weight: Bending, points 28 to 35
47
Thermal Diffusivity, mm2/s 72 to 79
62
Thermal Shock Resistance, points 8.6 to 12
15

Alloy Composition

Aluminum (Al), % 97.2 to 99
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0.050 to 0.1
Iron (Fe), % 0 to 0.35
0
Magnesium (Mg), % 0.45 to 0.8
93.9 to 96.8
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0.6 to 1.0
0
Silver (Ag), % 0
1.3 to 1.7
Titanium (Ti), % 0 to 0.1
0
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