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EQ21A Magnesium vs. 2095 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 2095 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EQ21A magnesium and the bottom bar is 2095 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.4
8.5
Fatigue Strength, MPa 110
200
Fracture Toughness, MPa-m1/2 16
20
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
410
Tensile Strength: Ultimate (UTS), MPa 250
700
Tensile Strength: Yield (Proof), MPa 190
610

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 160
210
Melting Completion (Liquidus), °C 640
660
Melting Onset (Solidus), °C 560
540
Specific Heat Capacity, J/kg-K 980
910
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
35
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 80
31
Density, g/cm3 1.9
3.0
Embodied Carbon, kg CO2/kg material 27
8.6
Embodied Energy, MJ/kg 210
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
57
Resilience: Unit (Modulus of Resilience), kJ/m3 410
2640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
46
Strength to Weight: Axial, points 37
65
Strength to Weight: Bending, points 47
59
Thermal Diffusivity, mm2/s 62
49
Thermal Shock Resistance, points 15
31

Alloy Composition

Aluminum (Al), % 0
91.3 to 94.9
Copper (Cu), % 0.050 to 0.1
3.9 to 4.6
Iron (Fe), % 0
0 to 0.15
Lithium (Li), % 0
0.7 to 1.5
Magnesium (Mg), % 93.9 to 96.8
0.25 to 0.8
Manganese (Mn), % 0
0 to 0.25
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.12
Silver (Ag), % 1.3 to 1.7
0.25 to 0.6
Titanium (Ti), % 0
0 to 0.1
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0.4 to 1.0
0.040 to 0.18
Residuals, % 0 to 0.3
0 to 0.15