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AWS ERNiCrMo-3 vs. EQ21A Magnesium

AWS ERNiCrMo-3 belongs to the nickel alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, 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-3 and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 34
2.4
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
17
Tensile Strength: Ultimate (UTS), MPa 870
250

Thermal Properties

Latent Heat of Fusion, J/g 330
340
Melting Completion (Liquidus), °C 1480
640
Melting Onset (Solidus), °C 1430
560
Specific Heat Capacity, J/kg-K 440
980
Thermal Conductivity, W/m-K 11
110
Thermal Expansion, µm/m-K 12
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
25
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
120

Otherwise Unclassified Properties

Base Metal Price, % relative 80
80
Density, g/cm3 8.6
1.9
Embodied Carbon, kg CO2/kg material 14
27
Embodied Energy, MJ/kg 190
210

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
63
Strength to Weight: Axial, points 28
37
Strength to Weight: Bending, points 24
47
Thermal Diffusivity, mm2/s 2.8
62
Thermal Shock Resistance, points 25
15

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 20 to 23
0
Copper (Cu), % 0 to 0.5
0.050 to 0.1
Iron (Fe), % 0 to 5.0
0
Magnesium (Mg), % 0
93.9 to 96.8
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 58 to 68.9
0 to 0.010
Niobium (Nb), % 3.2 to 4.2
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
1.3 to 1.7
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0 to 0.4
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3