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EQ21A Magnesium vs. 5019 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 5019 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 5019 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
68
Elongation at Break, % 2.4
2.2 to 18
Fatigue Strength, MPa 110
100 to 160
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
170 to 210
Tensile Strength: Ultimate (UTS), MPa 250
280 to 360
Tensile Strength: Yield (Proof), MPa 190
120 to 300

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 560
540
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
29
Electrical Conductivity: Equal Weight (Specific), % IACS 120
98

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.7
Embodied Carbon, kg CO2/kg material 27
9.0
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
7.6 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 410
110 to 650
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
51
Strength to Weight: Axial, points 37
29 to 38
Strength to Weight: Bending, points 47
35 to 42
Thermal Diffusivity, mm2/s 62
52
Thermal Shock Resistance, points 15
13 to 16

Alloy Composition

Aluminum (Al), % 0
91.5 to 95.3
Chromium (Cr), % 0
0 to 0.2
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
4.5 to 5.6
Manganese (Mn), % 0
0.1 to 0.6
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 0.2
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.15