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1435 Aluminum vs. AZ91B Magnesium

1435 aluminum belongs to the aluminum alloys classification, while AZ91B magnesium belongs to the magnesium 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 1435 aluminum and the bottom bar is AZ91B magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
46
Elongation at Break, % 4.1 to 32
5.0
Fatigue Strength, MPa 27 to 49
79
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 54 to 87
140
Tensile Strength: Ultimate (UTS), MPa 81 to 150
240
Tensile Strength: Yield (Proof), MPa 23 to 130
160

Thermal Properties

Latent Heat of Fusion, J/g 400
360
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 640
470
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 230
73
Thermal Expansion, µm/m-K 23
26

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.2
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1190
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 20
11
Resilience: Unit (Modulus of Resilience), kJ/m3 3.8 to 110
280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
69
Strength to Weight: Axial, points 8.3 to 15
38
Strength to Weight: Bending, points 15 to 23
49
Thermal Diffusivity, mm2/s 93
42
Thermal Shock Resistance, points 3.6 to 6.7
14

Alloy Composition

Aluminum (Al), % 99.35 to 99.7
8.3 to 9.7
Copper (Cu), % 0 to 0.020
0 to 0.35
Iron (Fe), % 0.3 to 0.5
0
Magnesium (Mg), % 0 to 0.050
87.9 to 91.2
Manganese (Mn), % 0 to 0.050
0.13 to 0.5
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0 to 0.15
0 to 0.5
Titanium (Ti), % 0 to 0.030
0
Zinc (Zn), % 0 to 0.1
0.35 to 1.0