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EV31A Magnesium vs. AWS E16-8-2

EV31A magnesium belongs to the magnesium alloys classification, while AWS E16-8-2 belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EV31A magnesium and the bottom bar is AWS E16-8-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 3.5
40
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 17
77
Tensile Strength: Ultimate (UTS), MPa 260
620

Thermal Properties

Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 86
16
Thermal Expansion, µm/m-K 27
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.7

Otherwise Unclassified Properties

Density, g/cm3 1.8
7.9

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 65
25
Strength to Weight: Axial, points 40
22
Strength to Weight: Bending, points 50
20
Thermal Diffusivity, mm2/s 47
4.2
Thermal Shock Resistance, points 16
16