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6063A-T6 Aluminum vs. AZ91E-T6 Magnesium

6063A-T6 aluminum belongs to the aluminum alloys classification, while AZ91E-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 6063A-T6 aluminum and the bottom bar is AZ91E-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
46
Elongation at Break, % 8.0
3.9
Fatigue Strength, MPa 74
84
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 150
150
Tensile Strength: Ultimate (UTS), MPa 260
260
Tensile Strength: Yield (Proof), MPa 200
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 620
500
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 200
84
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 52
11
Electrical Conductivity: Equal Weight (Specific), % IACS 170
58

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
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1190
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 280
190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
69
Strength to Weight: Axial, points 26
42
Strength to Weight: Bending, points 33
53
Thermal Diffusivity, mm2/s 83
49
Thermal Shock Resistance, points 11
15

Alloy Composition

Aluminum (Al), % 97.5 to 99
8.1 to 9.3
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.1
0 to 0.015
Iron (Fe), % 0.15 to 0.35
0 to 0.0050
Magnesium (Mg), % 0.6 to 0.9
88.8 to 91.3
Manganese (Mn), % 0 to 0.15
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0.3 to 0.6
0 to 0.2
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.15
0.4 to 1.0
Residuals, % 0
0 to 0.3