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206.0 Aluminum vs. EQ21A Magnesium

206.0 aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium 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 206.0 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95 to 110
80
Elastic (Young's, Tensile) Modulus, GPa 71
44
Elongation at Break, % 8.4 to 12
2.4
Fatigue Strength, MPa 88 to 210
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 260
150
Tensile Strength: Ultimate (UTS), MPa 330 to 440
250
Tensile Strength: Yield (Proof), MPa 190 to 350
190

Thermal Properties

Latent Heat of Fusion, J/g 390
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 570
560
Specific Heat Capacity, J/kg-K 880
980
Thermal Conductivity, W/m-K 120
110
Thermal Expansion, µm/m-K 19
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
25
Electrical Conductivity: Equal Weight (Specific), % IACS 99
120

Otherwise Unclassified Properties

Base Metal Price, % relative 11
80
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.0
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 49
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 840
410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
63
Strength to Weight: Axial, points 30 to 40
37
Strength to Weight: Bending, points 35 to 42
47
Thermal Diffusivity, mm2/s 46
62
Thermal Shock Resistance, points 17 to 23
15

Alloy Composition

Aluminum (Al), % 93.3 to 95.3
0
Copper (Cu), % 4.2 to 5.0
0.050 to 0.1
Iron (Fe), % 0 to 0.15
0
Magnesium (Mg), % 0.15 to 0.35
93.9 to 96.8
Manganese (Mn), % 0.2 to 0.5
0
Nickel (Ni), % 0 to 0.050
0 to 0.010
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
1.3 to 1.7
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.15 to 0.3
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