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EN-MC21320 Magnesium vs. AWS ERNiCrFe-6

EN-MC21320 magnesium belongs to the magnesium alloys classification, while AWS ERNiCrFe-6 belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 EN-MC21320 magnesium and the bottom bar is AWS ERNiCrFe-6.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 7.5
34
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
74
Tensile Strength: Ultimate (UTS), MPa 230
630

Thermal Properties

Latent Heat of Fusion, J/g 370
310
Melting Completion (Liquidus), °C 600
1370
Melting Onset (Solidus), °C 530
1320
Specific Heat Capacity, J/kg-K 1000
460
Thermal Conductivity, W/m-K 66
13
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 91
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
55
Density, g/cm3 1.6
8.4
Embodied Carbon, kg CO2/kg material 23
9.8
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 980
260

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
23
Strength to Weight: Axial, points 38
21
Strength to Weight: Bending, points 50
19
Thermal Diffusivity, mm2/s 40
3.3
Thermal Shock Resistance, points 13
19

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
14 to 17
Copper (Cu), % 0 to 0.010
0 to 0.5
Iron (Fe), % 0 to 0.0050
0 to 8.0
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
2.0 to 2.7
Nickel (Ni), % 0 to 0.0020
67 to 81.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.5 to 1.5
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.5
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0 to 0.5