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6082 Aluminum vs. AZ31C Magnesium

6082 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 6082 aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 6.3 to 18
12
Fatigue Strength, MPa 55 to 130
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 84 to 220
130
Tensile Strength: Ultimate (UTS), MPa 140 to 340
260
Tensile Strength: Yield (Proof), MPa 85 to 320
200

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 580
550
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 160
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
19
Electrical Conductivity: Equal Weight (Specific), % IACS 140
98

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
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 43
28
Resilience: Unit (Modulus of Resilience), kJ/m3 52 to 710
440
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
70
Strength to Weight: Axial, points 14 to 35
42
Strength to Weight: Bending, points 21 to 40
53
Thermal Diffusivity, mm2/s 67
74
Thermal Shock Resistance, points 6.0 to 15
16

Alloy Composition

Aluminum (Al), % 95.2 to 98.3
2.4 to 3.6
Chromium (Cr), % 0 to 0.25
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0.6 to 1.2
93.4 to 97
Manganese (Mn), % 0.4 to 1.0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0.7 to 1.3
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0.5 to 1.5
Residuals, % 0
0 to 0.3