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A242.0 Aluminum vs. AZ31C Magnesium

A242.0 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is A242.0 aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
45
Elongation at Break, % 1.6
12
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Tensile Strength: Ultimate (UTS), MPa 220
260

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 210
110
Melting Completion (Liquidus), °C 680
600
Melting Onset (Solidus), °C 550
550
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
19
Electrical Conductivity: Equal Weight (Specific), % IACS 110
98

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 3.1
1.7
Embodied Carbon, kg CO2/kg material 8.3
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
970

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 45
70
Strength to Weight: Axial, points 20
42
Strength to Weight: Bending, points 26
53
Thermal Diffusivity, mm2/s 52
74
Thermal Shock Resistance, points 9.3
16

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
2.4 to 3.6
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
0 to 0.1
Iron (Fe), % 0 to 0.8
0
Magnesium (Mg), % 1.2 to 1.7
93.4 to 97
Manganese (Mn), % 0 to 0.1
0.15 to 1.0
Nickel (Ni), % 1.8 to 2.3
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.1
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
0.5 to 1.5
Residuals, % 0
0 to 0.3