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6063-T4 Aluminum vs. AZ91E-T4 Magnesium

6063-T4 aluminum belongs to the aluminum alloys classification, while AZ91E-T4 magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is 6063-T4 aluminum and the bottom bar is AZ91E-T4 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 50
75
Elastic (Young's, Tensile) Modulus, GPa 68
46
Elongation at Break, % 17
6.2
Fatigue Strength, MPa 65
85
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 110
140
Tensile Strength: Ultimate (UTS), MPa 160
250
Tensile Strength: Yield (Proof), MPa 82
98

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 650
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 49
10
Electrical Conductivity: Equal Weight (Specific), % IACS 160
52

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 23
12
Resilience: Unit (Modulus of Resilience), kJ/m3 49
110
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
69
Strength to Weight: Axial, points 17
40
Strength to Weight: Bending, points 24
51
Thermal Diffusivity, mm2/s 81
49
Thermal Shock Resistance, points 7.2
14

Alloy Composition

Aluminum (Al), % 97.5 to 99.4
8.1 to 9.3
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0 to 0.015
Iron (Fe), % 0 to 0.35
0 to 0.0050
Magnesium (Mg), % 0.45 to 0.9
88.8 to 91.3
Manganese (Mn), % 0 to 0.1
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0.2 to 0.6
0 to 0.2
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0.4 to 1.0
Residuals, % 0
0 to 0.3