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EV31A Magnesium vs. 851.0 Aluminum

EV31A magnesium belongs to the magnesium alloys classification, while 851.0 aluminum belongs to the aluminum alloys. There are 19 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is EV31A magnesium and the bottom bar is 851.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
69
Elongation at Break, % 3.5
3.9 to 9.1
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 17
26
Tensile Strength: Ultimate (UTS), MPa 260
130 to 140

Thermal Properties

Maximum Temperature: Mechanical, °C 200
180
Melting Onset (Solidus), °C 590
360
Specific Heat Capacity, J/kg-K 1000
850
Thermal Conductivity, W/m-K 86
180
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
46
Electrical Conductivity: Equal Weight (Specific), % IACS 90
140

Otherwise Unclassified Properties

Density, g/cm3 1.8
3.1

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 65
45
Strength to Weight: Axial, points 40
12 to 13
Strength to Weight: Bending, points 50
19 to 20
Thermal Diffusivity, mm2/s 47
69
Thermal Shock Resistance, points 16
6.1 to 6.3