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240.0 Aluminum vs. EQ21A Magnesium

240.0 aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is 240.0 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
44
Elongation at Break, % 1.0
2.4
Fatigue Strength, MPa 140
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Tensile Strength: Ultimate (UTS), MPa 240
250
Tensile Strength: Yield (Proof), MPa 200
190

Thermal Properties

Latent Heat of Fusion, J/g 380
340
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 520
560
Specific Heat Capacity, J/kg-K 860
980
Thermal Conductivity, W/m-K 96
110
Thermal Expansion, µm/m-K 22
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
25
Electrical Conductivity: Equal Weight (Specific), % IACS 65
120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
80
Density, g/cm3 3.2
1.9
Embodied Carbon, kg CO2/kg material 8.7
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 280
410
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 43
63
Strength to Weight: Axial, points 20
37
Strength to Weight: Bending, points 26
47
Thermal Diffusivity, mm2/s 35
62
Thermal Shock Resistance, points 11
15

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0
Copper (Cu), % 7.0 to 9.0
0.050 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 5.5 to 6.5
93.9 to 96.8
Manganese (Mn), % 0.3 to 0.7
0
Nickel (Ni), % 0.3 to 0.7
0 to 0.010
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
1.3 to 1.7
Titanium (Ti), % 0 to 0.2
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