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2024-T6 Aluminum vs. AZ91E-T6 Magnesium

2024-T6 aluminum belongs to the aluminum alloys classification, while AZ91E-T6 magnesium belongs to the magnesium alloys. There are 30 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 2024-T6 aluminum and the bottom bar is AZ91E-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
46
Elongation at Break, % 5.1
3.9
Fatigue Strength, MPa 130
84
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 280
150
Tensile Strength: Ultimate (UTS), MPa 480
260
Tensile Strength: Yield (Proof), MPa 370
130

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 200
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 500
500
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 120
84
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
11
Electrical Conductivity: Equal Weight (Specific), % IACS 90
58

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.0
1.7
Embodied Carbon, kg CO2/kg material 8.3
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 980
190
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
69
Strength to Weight: Axial, points 44
42
Strength to Weight: Bending, points 45
53
Thermal Diffusivity, mm2/s 46
49
Thermal Shock Resistance, points 21
15

Alloy Composition

Aluminum (Al), % 90.7 to 94.7
8.1 to 9.3
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 1.2 to 1.8
88.8 to 91.3
Manganese (Mn), % 0.3 to 0.9
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0 to 0.5
0 to 0.2
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0.4 to 1.0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0
0 to 0.3