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6023-T6 Aluminum vs. AZ91D-T6 Magnesium

6023-T6 aluminum belongs to the aluminum alloys classification, while AZ91D-T6 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 6023-T6 aluminum and the bottom bar is AZ91D-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
46
Elongation at Break, % 11
2.3
Fatigue Strength, MPa 130
74
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 220
120
Tensile Strength: Ultimate (UTS), MPa 360
210
Tensile Strength: Yield (Proof), MPa 300
130

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 580
490
Specific Heat Capacity, J/kg-K 890
990
Thermal Conductivity, W/m-K 170
78
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
11
Electrical Conductivity: Equal Weight (Specific), % IACS 140
58

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 2.8
1.7
Embodied Carbon, kg CO2/kg material 8.3
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
4.2
Resilience: Unit (Modulus of Resilience), kJ/m3 670
170
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
69
Strength to Weight: Axial, points 36
33
Strength to Weight: Bending, points 40
45
Thermal Diffusivity, mm2/s 67
45
Thermal Shock Resistance, points 16
12

Alloy Composition

Aluminum (Al), % 94 to 97.7
8.3 to 9.7
Bismuth (Bi), % 0.3 to 0.8
0
Copper (Cu), % 0.2 to 0.5
0 to 0.030
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 0.4 to 0.9
88.7 to 91.2
Manganese (Mn), % 0.2 to 0.6
0.15 to 0.5
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0.6 to 1.4
0 to 0.1
Tin (Sn), % 0.6 to 1.2
0
Zinc (Zn), % 0
0.35 to 1.0
Residuals, % 0 to 0.15
0