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515.0 Aluminum vs. EQ21A Magnesium

515.0 aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is 515.0 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
44
Elongation at Break, % 10
2.4
Fatigue Strength, MPa 130
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 190
150
Tensile Strength: Ultimate (UTS), MPa 280
250

Thermal Properties

Latent Heat of Fusion, J/g 470
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 620
640
Melting Onset (Solidus), °C 620
560
Specific Heat Capacity, J/kg-K 900
980
Thermal Expansion, µm/m-K 23
27

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.6
1.9
Embodied Carbon, kg CO2/kg material 8.4
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
63
Strength to Weight: Axial, points 30
37
Strength to Weight: Bending, points 36
47
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 93.6 to 96.6
0
Copper (Cu), % 0 to 0.2
0.050 to 0.1
Iron (Fe), % 0 to 1.3
0
Magnesium (Mg), % 2.5 to 4.0
93.9 to 96.8
Manganese (Mn), % 0.4 to 0.6
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0.5 to 10
0
Silver (Ag), % 0
1.3 to 1.7
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