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358.0 Aluminum vs. EQ21A Magnesium

358.0 aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium 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 358.0 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
44
Elongation at Break, % 3.5 to 6.0
2.4
Fatigue Strength, MPa 100 to 110
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 300 to 320
150
Tensile Strength: Ultimate (UTS), MPa 350 to 370
250
Tensile Strength: Yield (Proof), MPa 290 to 320
190

Thermal Properties

Latent Heat of Fusion, J/g 520
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 560
560
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 21
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
25
Electrical Conductivity: Equal Weight (Specific), % IACS 130
120

Otherwise Unclassified Properties

Base Metal Price, % relative 19
80
Density, g/cm3 2.6
1.9
Embodied Carbon, kg CO2/kg material 8.7
27
Embodied Energy, MJ/kg 160
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 20
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 710
410
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
63
Strength to Weight: Axial, points 37 to 39
37
Strength to Weight: Bending, points 42 to 44
47
Thermal Diffusivity, mm2/s 63
62
Thermal Shock Resistance, points 16 to 17
15

Alloy Composition

Aluminum (Al), % 89.1 to 91.8
0
Beryllium (Be), % 0.1 to 0.3
0
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0.050 to 0.1
Iron (Fe), % 0 to 0.3
0
Magnesium (Mg), % 0.4 to 0.6
93.9 to 96.8
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 7.6 to 8.6
0
Silver (Ag), % 0
1.3 to 1.7
Titanium (Ti), % 0.1 to 0.2
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3