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AWS ERNiCrMo-2 vs. EV31A Magnesium

AWS ERNiCrMo-2 belongs to the nickel alloys classification, while EV31A magnesium belongs to the magnesium alloys. There are 17 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 AWS ERNiCrMo-2 and the bottom bar is EV31A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
44
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
17
Tensile Strength: Ultimate (UTS), MPa 750
260

Thermal Properties

Melting Onset (Solidus), °C 1410
590
Specific Heat Capacity, J/kg-K 450
1000
Thermal Conductivity, W/m-K 11
86
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
18
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
90

Otherwise Unclassified Properties

Density, g/cm3 8.4
1.8

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
65
Strength to Weight: Axial, points 25
40
Strength to Weight: Bending, points 22
50
Thermal Diffusivity, mm2/s 2.9
47
Thermal Shock Resistance, points 20
16