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EQ21A Magnesium vs. 5086 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 5086 aluminum belongs to the aluminum alloys. There are 30 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 5086 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
65 to 100
Elastic (Young's, Tensile) Modulus, GPa 44
68
Elongation at Break, % 2.4
1.7 to 20
Fatigue Strength, MPa 110
88 to 180
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
160 to 230
Tensile Strength: Ultimate (UTS), MPa 250
270 to 390
Tensile Strength: Yield (Proof), MPa 190
110 to 320

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 560
590
Specific Heat Capacity, J/kg-K 980
900
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
31
Electrical Conductivity: Equal Weight (Specific), % IACS 120
100

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.7
Embodied Carbon, kg CO2/kg material 27
8.8
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
5.8 to 42
Resilience: Unit (Modulus of Resilience), kJ/m3 410
86 to 770
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
50
Strength to Weight: Axial, points 37
28 to 40
Strength to Weight: Bending, points 47
34 to 44
Thermal Diffusivity, mm2/s 62
52
Thermal Shock Resistance, points 15
12 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 96.3
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 0.050 to 0.1
0 to 0.1
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 93.9 to 96.8
3.5 to 4.5
Manganese (Mn), % 0
0.2 to 0.7
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.15
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.15