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EQ21A Magnesium vs. 240.0 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 240.0 aluminum belongs to the aluminum 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 EQ21A magnesium and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition


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Aluminum (Al), % 0
81.7 to 86.9
Copper (Cu), % 0.050 to 0.1
7.0 to 9.0
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 93.9 to 96.8
5.5 to 6.5
Manganese (Mn), % 0
0.3 to 0.7
Nickel (Ni), % 0 to 0.010
0.3 to 0.7
Silicon (Si), % 0
0 to 0.5
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 0.1
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15