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AZ91E Magnesium vs. 5050 Aluminum

AZ91E magnesium belongs to the magnesium alloys classification, while 5050 aluminum belongs to the aluminum alloys. There are 31 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 AZ91E magnesium and the bottom bar is 5050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
36 to 68
Elastic (Young's, Tensile) Modulus, GPa 46
68
Elongation at Break, % 2.5 to 6.2
1.7 to 22
Fatigue Strength, MPa 81 to 85
45 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 89 to 150
91 to 140
Tensile Strength: Ultimate (UTS), MPa 160 to 260
140 to 250
Tensile Strength: Yield (Proof), MPa 96 to 130
50 to 210

Thermal Properties

Latent Heat of Fusion, J/g 350
400
Maximum Temperature: Mechanical, °C 130
180
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 500
630
Specific Heat Capacity, J/kg-K 990
900
Thermal Conductivity, W/m-K 84
190
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10 to 12
50
Electrical Conductivity: Equal Weight (Specific), % IACS 52 to 60
170

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.7
Embodied Carbon, kg CO2/kg material 22
8.4
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4 to 12
4.1 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 190
18 to 330
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
50
Strength to Weight: Axial, points 25 to 42
15 to 26
Strength to Weight: Bending, points 37 to 53
22 to 33
Thermal Diffusivity, mm2/s 49
79
Thermal Shock Resistance, points 9.0 to 15
6.3 to 11

Alloy Composition

Aluminum (Al), % 8.1 to 9.3
96.3 to 98.9
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.015
0 to 0.2
Iron (Fe), % 0 to 0.0050
0 to 0.7
Magnesium (Mg), % 88.8 to 91.3
1.1 to 1.8
Manganese (Mn), % 0.17 to 0.35
0 to 0.1
Nickel (Ni), % 0 to 0.0010
0
Silicon (Si), % 0 to 0.2
0 to 0.4
Zinc (Zn), % 0.4 to 1.0
0 to 0.25
Residuals, % 0
0 to 0.15