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6023 Aluminum vs. AZ31C Magnesium

6023 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 6023 aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 11
12
Fatigue Strength, MPa 120 to 130
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 210 to 220
130
Tensile Strength: Ultimate (UTS), MPa 360
260
Tensile Strength: Yield (Proof), MPa 300 to 310
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 580
550
Specific Heat Capacity, J/kg-K 890
990
Thermal Conductivity, W/m-K 170
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
19
Electrical Conductivity: Equal Weight (Specific), % IACS 140
98

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 2.8
1.7
Embodied Carbon, kg CO2/kg material 8.3
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
28
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
440
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
70
Strength to Weight: Axial, points 35 to 36
42
Strength to Weight: Bending, points 40
53
Thermal Diffusivity, mm2/s 67
74
Thermal Shock Resistance, points 16
16

Alloy Composition

Aluminum (Al), % 94 to 97.7
2.4 to 3.6
Bismuth (Bi), % 0.3 to 0.8
0
Copper (Cu), % 0.2 to 0.5
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0.4 to 0.9
93.4 to 97
Manganese (Mn), % 0.2 to 0.6
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0.6 to 1.4
0 to 0.1
Tin (Sn), % 0.6 to 1.2
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3