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308.0 Aluminum vs. QE22A Magnesium

308.0 aluminum belongs to the aluminum alloys classification, while QE22A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is 308.0 aluminum and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
80
Elastic (Young's, Tensile) Modulus, GPa 73
44
Elongation at Break, % 2.0
2.4
Fatigue Strength, MPa 89
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 150
150
Tensile Strength: Ultimate (UTS), MPa 190
250
Tensile Strength: Yield (Proof), MPa 110
190

Thermal Properties

Latent Heat of Fusion, J/g 470
340
Maximum Temperature: Mechanical, °C 170
250
Melting Completion (Liquidus), °C 620
640
Melting Onset (Solidus), °C 540
570
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 140
110
Thermal Expansion, µm/m-K 20
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
25
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Density, g/cm3 2.9
2.0
Embodied Carbon, kg CO2/kg material 7.7
27
Embodied Energy, MJ/kg 140
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.3
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 83
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
60
Strength to Weight: Axial, points 18
36
Strength to Weight: Bending, points 25
46
Thermal Diffusivity, mm2/s 55
59
Thermal Shock Resistance, points 9.2
15

Alloy Composition

Aluminum (Al), % 85.7 to 91
0
Copper (Cu), % 4.0 to 5.0
0 to 0.1
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0 to 0.1
93.1 to 95.8
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 5.0 to 6.0
0
Silver (Ag), % 0
2.0 to 3.0
Titanium (Ti), % 0 to 0.25
0
Unspecified Rare Earths, % 0
1.8 to 2.5
Zinc (Zn), % 0 to 1.0
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3