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6182 Aluminum vs. AZ31C Magnesium

6182 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 6182 aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 6.8 to 13
12
Fatigue Strength, MPa 63 to 99
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 140 to 190
130
Tensile Strength: Ultimate (UTS), MPa 230 to 320
260
Tensile Strength: Yield (Proof), MPa 130 to 270
200

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 190
110
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 600
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 40
19
Electrical Conductivity: Equal Weight (Specific), % IACS 130
98

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.4
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
28
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 520
440
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
70
Strength to Weight: Axial, points 23 to 32
42
Strength to Weight: Bending, points 30 to 38
53
Thermal Diffusivity, mm2/s 65
74
Thermal Shock Resistance, points 10 to 14
16

Alloy Composition

Aluminum (Al), % 95 to 97.9
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), % 0.7 to 1.2
93.4 to 97
Manganese (Mn), % 0.5 to 1.0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0.9 to 1.3
0 to 0.1
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0.5 to 1.5
Zirconium (Zr), % 0.050 to 0.2
0
Residuals, % 0
0 to 0.3