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384.0 Aluminum vs. EQ21A Magnesium

384.0 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 (4, in this case) are not shown.

For each property being compared, the top bar is 384.0 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
80
Elastic (Young's, Tensile) Modulus, GPa 74
44
Elongation at Break, % 2.5
2.4
Fatigue Strength, MPa 140
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
17
Shear Strength, MPa 200
150
Tensile Strength: Ultimate (UTS), MPa 330
250
Tensile Strength: Yield (Proof), MPa 170
190

Thermal Properties

Latent Heat of Fusion, J/g 550
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 580
640
Melting Onset (Solidus), °C 530
560
Specific Heat Capacity, J/kg-K 870
980
Thermal Conductivity, W/m-K 96
110
Thermal Expansion, µm/m-K 21
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
25
Electrical Conductivity: Equal Weight (Specific), % IACS 69
120

Otherwise Unclassified Properties

Base Metal Price, % relative 11
80
Density, g/cm3 2.9
1.9
Embodied Carbon, kg CO2/kg material 7.4
27
Embodied Energy, MJ/kg 140
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 190
410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
63
Strength to Weight: Axial, points 32
37
Strength to Weight: Bending, points 37
47
Thermal Diffusivity, mm2/s 39
62
Thermal Shock Resistance, points 15
15

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0
Copper (Cu), % 3.0 to 4.5
0.050 to 0.1
Iron (Fe), % 0 to 1.3
0
Magnesium (Mg), % 0 to 0.1
93.9 to 96.8
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0 to 0.010
Silicon (Si), % 10.5 to 12
0
Silver (Ag), % 0
1.3 to 1.7
Tin (Sn), % 0 to 0.35
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0 to 3.0
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3