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EN-MC32110 Magnesium vs. AWS E120C-K4

EN-MC32110 magnesium belongs to the magnesium alloys classification, while AWS E120C-K4 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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-MC32110 magnesium and the bottom bar is AWS E120C-K4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 49
190
Elongation at Break, % 2.2
17
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
73
Tensile Strength: Ultimate (UTS), MPa 220
950
Tensile Strength: Yield (Proof), MPa 140
840

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 500
1410
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
41
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.5
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 920
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
160
Resilience: Unit (Modulus of Resilience), kJ/m3 210
1880
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
34
Strength to Weight: Bending, points 38
27
Thermal Diffusivity, mm2/s 58
11
Thermal Shock Resistance, points 12
28

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
0.15 to 0.65
Copper (Cu), % 2.4 to 3.0
0 to 0.35
Iron (Fe), % 0 to 0.050
92.1 to 98.4
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.75 to 2.3
Molybdenum (Mo), % 0
0.25 to 0.65
Nickel (Ni), % 0 to 0.010
0.5 to 2.5
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.2
0 to 0.8
Sulfur (S), % 0
0 to 0.025
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0 to 0.5