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AZ91A Magnesium vs. 1080A Aluminum

AZ91A magnesium belongs to the magnesium alloys classification, while 1080A aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AZ91A magnesium and the bottom bar is 1080A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
18 to 40
Elastic (Young's, Tensile) Modulus, GPa 46
68
Elongation at Break, % 5.0
2.3 to 34
Fatigue Strength, MPa 99
18 to 50
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 140
49 to 81
Tensile Strength: Ultimate (UTS), MPa 240
74 to 140
Tensile Strength: Yield (Proof), MPa 160
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 360
400
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 470
640
Specific Heat Capacity, J/kg-K 990
900
Thermal Conductivity, W/m-K 73
230
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
62
Electrical Conductivity: Equal Weight (Specific), % IACS 52
200

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.7
Embodied Carbon, kg CO2/kg material 22
8.3
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 990
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
3.1 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 280
2.1 to 100
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
50
Strength to Weight: Axial, points 38
7.6 to 15
Strength to Weight: Bending, points 49
14 to 22
Thermal Diffusivity, mm2/s 42
94
Thermal Shock Resistance, points 14
3.3 to 6.4

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
99.8 to 100
Copper (Cu), % 0 to 0.1
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0
0 to 0.15
Magnesium (Mg), % 88.2 to 91.2
0 to 0.020
Manganese (Mn), % 0.13 to 0.5
0 to 0.020
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.15
Titanium (Ti), % 0
0 to 0.020
Zinc (Zn), % 0.35 to 1.0
0 to 0.060