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EN-MC21210 Magnesium vs. AWS ER120S-1

EN-MC21210 magnesium belongs to the magnesium alloys classification, while AWS ER120S-1 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-MC21210 magnesium and the bottom bar is AWS ER120S-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 14
17
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 190
930
Tensile Strength: Yield (Proof), MPa 90
830

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
46
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 130
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
4.2
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
1.9
Embodied Energy, MJ/kg 160
25
Embodied Water, L/kg 980
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
150
Resilience: Unit (Modulus of Resilience), kJ/m3 92
1850
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
33
Strength to Weight: Bending, points 44
27
Thermal Diffusivity, mm2/s 76
13
Thermal Shock Resistance, points 11
27

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0 to 0.1
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
0 to 0.6
Copper (Cu), % 0 to 0.010
0 to 0.25
Iron (Fe), % 0 to 0.0050
92.4 to 96.1
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
1.4 to 1.8
Molybdenum (Mo), % 0
0.3 to 0.65
Nickel (Ni), % 0 to 0.0020
2.0 to 2.8
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.1
0.25 to 0.6
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0 to 0.010
0 to 0.5