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2011 Aluminum vs. AZ31C Magnesium

2011 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 2011 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, % 8.5 to 18
12
Fatigue Strength, MPa 74 to 120
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 190 to 250
130
Tensile Strength: Ultimate (UTS), MPa 310 to 420
260
Tensile Strength: Yield (Proof), MPa 140 to 310
200

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 190
110
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 540
550
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 140 to 170
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 45
19
Electrical Conductivity: Equal Weight (Specific), % IACS 100 to 130
98

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.1
1.7
Embodied Carbon, kg CO2/kg material 7.9
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 52
28
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 680
440
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 44
70
Strength to Weight: Axial, points 27 to 37
42
Strength to Weight: Bending, points 32 to 40
53
Thermal Diffusivity, mm2/s 51 to 64
74
Thermal Shock Resistance, points 14 to 19
16

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
2.4 to 3.6
Bismuth (Bi), % 0.2 to 0.6
0
Copper (Cu), % 5.0 to 6.0
0 to 0.1
Iron (Fe), % 0 to 0.7
0
Lead (Pb), % 0.2 to 0.6
0
Magnesium (Mg), % 0
93.4 to 97
Manganese (Mn), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.1
Zinc (Zn), % 0 to 0.3
0.5 to 1.5
Residuals, % 0
0 to 0.3