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308.0 Aluminum vs. AZ31C Magnesium

308.0 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 308.0 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, % 2.0
12
Fatigue Strength, MPa 89
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 150
130
Tensile Strength: Ultimate (UTS), MPa 190
260
Tensile Strength: Yield (Proof), MPa 110
200

Thermal Properties

Latent Heat of Fusion, J/g 470
350
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 620
600
Melting Onset (Solidus), °C 540
550
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 20
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 10
12
Density, g/cm3 2.9
1.7
Embodied Carbon, kg CO2/kg material 7.7
23
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 1080
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.3
28
Resilience: Unit (Modulus of Resilience), kJ/m3 83
440
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 47
70
Strength to Weight: Axial, points 18
42
Strength to Weight: Bending, points 25
53
Thermal Diffusivity, mm2/s 55
74
Thermal Shock Resistance, points 9.2
16

Alloy Composition

Aluminum (Al), % 85.7 to 91
2.4 to 3.6
Copper (Cu), % 4.0 to 5.0
0 to 0.1
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0 to 0.1
93.4 to 97
Manganese (Mn), % 0 to 0.5
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 5.0 to 6.0
0 to 0.1
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.0
0.5 to 1.5
Residuals, % 0
0 to 0.3