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6101A Aluminum vs. AZ31C Magnesium

6101A aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 6101A aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 11
12
Fatigue Strength, MPa 80
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 130
130
Tensile Strength: Ultimate (UTS), MPa 220
260
Tensile Strength: Yield (Proof), MPa 190
200

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 160
110
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 630
550
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 200
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55
19
Electrical Conductivity: Equal Weight (Specific), % IACS 180
98

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.3
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1190
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
28
Resilience: Unit (Modulus of Resilience), kJ/m3 280
440
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 51
70
Strength to Weight: Axial, points 23
42
Strength to Weight: Bending, points 30
53
Thermal Diffusivity, mm2/s 84
74
Thermal Shock Resistance, points 10
16

Alloy Composition

Aluminum (Al), % 97.9 to 99.3
2.4 to 3.6
Copper (Cu), % 0 to 0.050
0 to 0.1
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 0.4 to 0.9
93.4 to 97
Manganese (Mn), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0.3 to 0.7
0 to 0.1
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3