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6182-T6 Aluminum vs. AZ91D-T6 Magnesium

6182-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 6182-T6 aluminum and the bottom bar is AZ91D-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 6.8
2.3
Fatigue Strength, MPa 99
74
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 190
120
Tensile Strength: Ultimate (UTS), MPa 320
210
Tensile Strength: Yield (Proof), MPa 270
130

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 190
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 600
490
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 160
78
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
11
Electrical Conductivity: Equal Weight (Specific), % IACS 130
58

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.4
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
4.2
Resilience: Unit (Modulus of Resilience), kJ/m3 520
170
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
69
Strength to Weight: Axial, points 32
33
Strength to Weight: Bending, points 38
45
Thermal Diffusivity, mm2/s 65
45
Thermal Shock Resistance, points 14
12

Alloy Composition

Aluminum (Al), % 95 to 97.9
8.3 to 9.7
Chromium (Cr), % 0 to 0.25
0
Copper (Cu), % 0 to 0.1
0 to 0.030
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 0.7 to 1.2
88.7 to 91.2
Manganese (Mn), % 0.5 to 1.0
0.15 to 0.5
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0.9 to 1.3
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0.35 to 1.0
Zirconium (Zr), % 0.050 to 0.2
0
Residuals, % 0 to 0.15
0