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AZ91D Magnesium vs. A380.0 Aluminum

AZ91D magnesium belongs to the magnesium alloys classification, while A380.0 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AZ91D magnesium and the bottom bar is A380.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 80
80
Elastic (Young's, Tensile) Modulus, GPa 46
73
Elongation at Break, % 2.3 to 4.5
3.3
Fatigue Strength, MPa 74 to 85
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Shear Strength, MPa 120 to 140
190
Tensile Strength: Ultimate (UTS), MPa 160 to 220
290
Tensile Strength: Yield (Proof), MPa 80 to 130
160

Thermal Properties

Latent Heat of Fusion, J/g 350
510
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
590
Melting Onset (Solidus), °C 490
550
Specific Heat Capacity, J/kg-K 990
870
Thermal Conductivity, W/m-K 78
96
Thermal Expansion, µm/m-K 27
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
25
Electrical Conductivity: Equal Weight (Specific), % IACS 58
78

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.7
2.9
Embodied Carbon, kg CO2/kg material 22
7.5
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 7.7
8.3
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 170
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
48
Strength to Weight: Axial, points 26 to 34
28
Strength to Weight: Bending, points 38 to 46
34
Thermal Diffusivity, mm2/s 45
38
Thermal Shock Resistance, points 9.5 to 13
13

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
80.3 to 89.5
Copper (Cu), % 0 to 0.030
3.0 to 4.0
Iron (Fe), % 0 to 0.0050
0 to 1.3
Magnesium (Mg), % 88.7 to 91.2
0 to 0.1
Manganese (Mn), % 0.15 to 0.5
0 to 0.5
Nickel (Ni), % 0 to 0.0020
0 to 0.5
Silicon (Si), % 0 to 0.1
7.5 to 9.5
Tin (Sn), % 0
0 to 0.35
Zinc (Zn), % 0.35 to 1.0
0 to 3.0
Residuals, % 0
0 to 0.5