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380.0 Aluminum vs. EQ21A Magnesium

380.0 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 380.0 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
80
Elastic (Young's, Tensile) Modulus, GPa 74
44
Elongation at Break, % 3.0
2.4
Fatigue Strength, MPa 140
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
17
Shear Strength, MPa 190
150
Tensile Strength: Ultimate (UTS), MPa 320
250
Tensile Strength: Yield (Proof), MPa 160
190

Thermal Properties

Latent Heat of Fusion, J/g 510
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 590
640
Melting Onset (Solidus), °C 540
560
Specific Heat Capacity, J/kg-K 870
980
Thermal Conductivity, W/m-K 100
110
Thermal Expansion, µm/m-K 22
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
25
Electrical Conductivity: Equal Weight (Specific), % IACS 83
120

Otherwise Unclassified Properties

Base Metal Price, % relative 10
80
Density, g/cm3 2.9
1.9
Embodied Carbon, kg CO2/kg material 7.5
27
Embodied Energy, MJ/kg 140
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.0
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 170
410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 48
63
Strength to Weight: Axial, points 31
37
Strength to Weight: Bending, points 36
47
Thermal Diffusivity, mm2/s 40
62
Thermal Shock Resistance, points 14
15

Alloy Composition

Aluminum (Al), % 79.6 to 89.5
0
Copper (Cu), % 3.0 to 4.0
0.050 to 0.1
Iron (Fe), % 0 to 2.0
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), % 7.5 to 9.5
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