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EQ21A Magnesium vs. 5254 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 5254 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 5254 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
68
Elongation at Break, % 2.4
3.4 to 22
Fatigue Strength, MPa 110
110 to 160
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
150 to 200
Tensile Strength: Ultimate (UTS), MPa 250
240 to 350
Tensile Strength: Yield (Proof), MPa 190
100 to 270

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 560
590
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
32
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.7
Embodied Carbon, kg CO2/kg material 27
8.8
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
11 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 410
73 to 550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
51
Strength to Weight: Axial, points 37
25 to 37
Strength to Weight: Bending, points 47
32 to 41
Thermal Diffusivity, mm2/s 62
52
Thermal Shock Resistance, points 15
10 to 16

Alloy Composition


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Aluminum (Al), % 0
94.4 to 96.8
Chromium (Cr), % 0
0.15 to 0.35
Copper (Cu), % 0.050 to 0.1
0 to 0.050
Iron (Fe), % 0
0 to 0.45
Magnesium (Mg), % 93.9 to 96.8
3.1 to 3.9
Manganese (Mn), % 0
0 to 0.010
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.45
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.050
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 to 0.3
0 to 0.15