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2117 Aluminum vs. AZ31C Magnesium

2117 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 (1, in this case) are not shown.

For each property being compared, the top bar is 2117 aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
45
Elongation at Break, % 26
12
Fatigue Strength, MPa 95
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 200
130
Tensile Strength: Ultimate (UTS), MPa 300
260
Tensile Strength: Yield (Proof), MPa 170
200

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 220
110
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 550
550
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
19
Electrical Conductivity: Equal Weight (Specific), % IACS 120
98

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 3.0
1.7
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
28
Resilience: Unit (Modulus of Resilience), kJ/m3 190
440
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
70
Strength to Weight: Axial, points 28
42
Strength to Weight: Bending, points 33
53
Thermal Diffusivity, mm2/s 59
74
Thermal Shock Resistance, points 12
16

Alloy Composition

Aluminum (Al), % 91 to 97.6
2.4 to 3.6
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 2.2 to 4.5
0 to 0.1
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0.2 to 1.0
93.4 to 97
Manganese (Mn), % 0.4 to 1.0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0.2 to 0.8
0 to 0.1
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.25
0.5 to 1.5
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.3