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AZ91B Magnesium vs. 2036 Aluminum

AZ91B magnesium belongs to the magnesium alloys classification, while 2036 aluminum belongs to the aluminum alloys. There are 30 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 AZ91B magnesium and the bottom bar is 2036 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
70
Elongation at Break, % 5.0
24
Fatigue Strength, MPa 79
130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 140
210
Tensile Strength: Ultimate (UTS), MPa 240
340
Tensile Strength: Yield (Proof), MPa 160
200

Thermal Properties

Latent Heat of Fusion, J/g 360
390
Maximum Temperature: Mechanical, °C 130
190
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 470
560
Specific Heat Capacity, J/kg-K 990
890
Thermal Conductivity, W/m-K 73
160
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
41
Electrical Conductivity: Equal Weight (Specific), % IACS 58
130

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.7
2.9
Embodied Carbon, kg CO2/kg material 22
8.1
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
70
Resilience: Unit (Modulus of Resilience), kJ/m3 280
270
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
48
Strength to Weight: Axial, points 38
33
Strength to Weight: Bending, points 49
38
Thermal Diffusivity, mm2/s 42
62
Thermal Shock Resistance, points 14
15

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
94.4 to 97.4
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.35
2.2 to 3.0
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 87.9 to 91.2
0.3 to 0.6
Manganese (Mn), % 0.13 to 0.5
0.1 to 0.4
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.5
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0.35 to 1.0
0 to 0.25
Residuals, % 0
0 to 0.15