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6012-T4 Aluminum vs. AZ91E-T4 Magnesium

6012-T4 aluminum belongs to the aluminum alloys classification, while AZ91E-T4 magnesium belongs to the magnesium alloys. There are 30 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 6012-T4 aluminum and the bottom bar is AZ91E-T4 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
46
Elongation at Break, % 11
6.2
Fatigue Strength, MPa 55
85
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 130
140
Tensile Strength: Ultimate (UTS), MPa 220
250
Tensile Strength: Yield (Proof), MPa 110
98

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 570
500
Specific Heat Capacity, J/kg-K 890
990
Thermal Conductivity, W/m-K 160
84
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
10
Electrical Conductivity: Equal Weight (Specific), % IACS 140
52

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
1.7
Embodied Carbon, kg CO2/kg material 8.2
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
12
Resilience: Unit (Modulus of Resilience), kJ/m3 94
110
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 48
69
Strength to Weight: Axial, points 22
40
Strength to Weight: Bending, points 29
51
Thermal Diffusivity, mm2/s 62
49
Thermal Shock Resistance, points 10
14

Alloy Composition

Aluminum (Al), % 92.2 to 98
8.1 to 9.3
Bismuth (Bi), % 0 to 0.7
0
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.1
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.0050
Lead (Pb), % 0.4 to 2.0
0
Magnesium (Mg), % 0.6 to 1.2
88.8 to 91.3
Manganese (Mn), % 0.4 to 1.0
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0.6 to 1.4
0 to 0.2
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.3
0.4 to 1.0
Residuals, % 0
0 to 0.3