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A390.0-F Aluminum vs. AZ91E-F Magnesium

A390.0-F aluminum belongs to the aluminum alloys classification, while AZ91E-F 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 A390.0-F aluminum and the bottom bar is AZ91E-F magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
75
Elastic (Young's, Tensile) Modulus, GPa 75
46
Elongation at Break, % 0.91
2.5
Fatigue Strength, MPa 70
81
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
18
Tensile Strength: Ultimate (UTS), MPa 220
160
Tensile Strength: Yield (Proof), MPa 210
96

Thermal Properties

Latent Heat of Fusion, J/g 640
350
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 580
600
Melting Onset (Solidus), °C 480
500
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 130
84
Thermal Expansion, µm/m-K 20
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
12
Electrical Conductivity: Equal Weight (Specific), % IACS 67
60

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 7.3
22
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 950
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.0
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 280
100
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 52
69
Strength to Weight: Axial, points 23
25
Strength to Weight: Bending, points 30
37
Thermal Diffusivity, mm2/s 56
49
Thermal Shock Resistance, points 10
9.0

Alloy Composition

Aluminum (Al), % 75.3 to 79.6
8.1 to 9.3
Copper (Cu), % 4.0 to 5.0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 0.45 to 0.65
88.8 to 91.3
Manganese (Mn), % 0 to 0.1
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 16 to 18
0 to 0.2
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0.4 to 1.0
Residuals, % 0
0 to 0.3