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AZ91A Magnesium vs. 1435 Aluminum

AZ91A magnesium belongs to the magnesium alloys classification, while 1435 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 AZ91A magnesium and the bottom bar is 1435 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
69
Elongation at Break, % 5.0
4.1 to 32
Fatigue Strength, MPa 99
27 to 49
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 140
54 to 87
Tensile Strength: Ultimate (UTS), MPa 240
81 to 150
Tensile Strength: Yield (Proof), MPa 160
23 to 130

Thermal Properties

Latent Heat of Fusion, J/g 360
400
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
650
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
60
Electrical Conductivity: Equal Weight (Specific), % IACS 52
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
1190

Common Calculations

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

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
99.35 to 99.7
Copper (Cu), % 0 to 0.1
0 to 0.020
Iron (Fe), % 0
0.3 to 0.5
Magnesium (Mg), % 88.2 to 91.2
0 to 0.050
Manganese (Mn), % 0.13 to 0.5
0 to 0.050
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.15
Titanium (Ti), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0 to 0.1