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AZ91D Magnesium vs. 1070A Aluminum

AZ91D magnesium belongs to the magnesium alloys classification, while 1070A aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AZ91D magnesium and the bottom bar is 1070A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 80
18 to 40
Elastic (Young's, Tensile) Modulus, GPa 46
68
Elongation at Break, % 2.3 to 4.5
2.3 to 33
Fatigue Strength, MPa 74 to 85
17 to 51
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 120 to 140
44 to 81
Tensile Strength: Ultimate (UTS), MPa 160 to 220
68 to 140
Tensile Strength: Yield (Proof), MPa 80 to 130
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 350
400
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 490
640
Specific Heat Capacity, J/kg-K 990
900
Thermal Conductivity, W/m-K 78
230
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
60
Electrical Conductivity: Equal Weight (Specific), % IACS 58
200

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.0
Density, g/cm3 1.7
2.7
Embodied Carbon, kg CO2/kg material 22
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 7.7
3.0 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 170
2.1 to 100
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
50
Strength to Weight: Axial, points 26 to 34
7.0 to 14
Strength to Weight: Bending, points 38 to 46
14 to 22
Thermal Diffusivity, mm2/s 45
94
Thermal Shock Resistance, points 9.5 to 13
3.1 to 6.3

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
99.7 to 100
Copper (Cu), % 0 to 0.030
0 to 0.030
Iron (Fe), % 0 to 0.0050
0 to 0.25
Magnesium (Mg), % 88.7 to 91.2
0 to 0.030
Manganese (Mn), % 0.15 to 0.5
0 to 0.030
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.2
Titanium (Ti), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0 to 0.070

Comparable Variants