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EV31A Magnesium vs. AWS ERNiCrMo-10

EV31A magnesium belongs to the magnesium alloys classification, while AWS ERNiCrMo-10 belongs to the nickel alloys. There are 18 material properties with values for both materials. Properties with values for just one material (15, 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 ERNiCrMo-10.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
220
Elongation at Break, % 3.5
28
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 17
84
Tensile Strength: Ultimate (UTS), MPa 260
790

Thermal Properties

Melting Onset (Solidus), °C 590
1490
Specific Heat Capacity, J/kg-K 1000
420
Thermal Conductivity, W/m-K 86
10
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 90
1.5

Otherwise Unclassified Properties

Density, g/cm3 1.8
8.9

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 65
23
Strength to Weight: Axial, points 40
25
Strength to Weight: Bending, points 50
21
Thermal Diffusivity, mm2/s 47
2.7
Thermal Shock Resistance, points 16
21