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2011A-T4 Aluminum vs. AZ91E-T4 Magnesium

2011A-T4 aluminum belongs to the aluminum alloys classification, while AZ91E-T4 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 2011A-T4 aluminum and the bottom bar is AZ91E-T4 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 16
6.2
Fatigue Strength, MPa 75
85
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 190
140
Tensile Strength: Ultimate (UTS), MPa 310
250
Tensile Strength: Yield (Proof), MPa 140
98

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 190
130
Melting Completion (Liquidus), °C 660
600
Melting Onset (Solidus), °C 550
500
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 130
84
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
10
Electrical Conductivity: Equal Weight (Specific), % IACS 96
52

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.1
1.7
Embodied Carbon, kg CO2/kg material 7.9
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
12
Resilience: Unit (Modulus of Resilience), kJ/m3 140
110
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 44
69
Strength to Weight: Axial, points 28
40
Strength to Weight: Bending, points 33
51
Thermal Diffusivity, mm2/s 49
49
Thermal Shock Resistance, points 14
14

Alloy Composition

Aluminum (Al), % 91.5 to 95.1
8.1 to 9.3
Bismuth (Bi), % 0.2 to 0.6
0
Copper (Cu), % 4.5 to 6.0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.0050
Lead (Pb), % 0.2 to 0.6
0
Magnesium (Mg), % 0
88.8 to 91.3
Manganese (Mn), % 0
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0 to 0.4
0 to 0.2
Zinc (Zn), % 0 to 0.3
0.4 to 1.0
Residuals, % 0
0 to 0.3