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EV31A Magnesium vs. 6081 Aluminum

EV31A magnesium belongs to the magnesium alloys classification, while 6081 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EV31A magnesium and the bottom bar is 6081 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
69
Elongation at Break, % 3.5
9.0
Fatigue Strength, MPa 120
110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 170
180
Tensile Strength: Ultimate (UTS), MPa 260
310
Tensile Strength: Yield (Proof), MPa 170
270

Thermal Properties

Maximum Temperature: Mechanical, °C 200
160
Melting Onset (Solidus), °C 590
610
Specific Heat Capacity, J/kg-K 1000
900
Thermal Conductivity, W/m-K 86
180
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
47
Electrical Conductivity: Equal Weight (Specific), % IACS 90
160

Otherwise Unclassified Properties

Density, g/cm3 1.8
2.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
27
Resilience: Unit (Modulus of Resilience), kJ/m3 330
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 65
50
Strength to Weight: Axial, points 40
32
Strength to Weight: Bending, points 50
37
Thermal Diffusivity, mm2/s 47
74
Thermal Shock Resistance, points 16
14