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EQ21A Magnesium vs. 6182 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 6182 aluminum belongs to the aluminum 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 EQ21A magnesium and the bottom bar is 6182 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.4
6.8 to 13
Fatigue Strength, MPa 110
63 to 99
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
140 to 190
Tensile Strength: Ultimate (UTS), MPa 250
230 to 320
Tensile Strength: Yield (Proof), MPa 190
130 to 270

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
40
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.7
Embodied Carbon, kg CO2/kg material 27
8.4
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 410
110 to 520
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
50
Strength to Weight: Axial, points 37
23 to 32
Strength to Weight: Bending, points 47
30 to 38
Thermal Diffusivity, mm2/s 62
65
Thermal Shock Resistance, points 15
10 to 14

Alloy Composition

Aluminum (Al), % 0
95 to 97.9
Chromium (Cr), % 0
0 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
0.7 to 1.2
Manganese (Mn), % 0
0.5 to 1.0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0.9 to 1.3
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.1
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0.4 to 1.0
0.050 to 0.2
Residuals, % 0 to 0.3
0 to 0.15