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EN-MC21220 Magnesium vs. Grade 363 Molybdenum

EN-MC21220 magnesium belongs to the magnesium alloys classification, while grade 363 molybdenum belongs to the otherwise unclassified metals. There are 20 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 EN-MC21220 magnesium and the bottom bar is grade 363 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
310
Elongation at Break, % 11
6.2 to 11
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
120
Tensile Strength: Ultimate (UTS), MPa 210
580 to 720
Tensile Strength: Yield (Proof), MPa 120
350 to 620

Thermal Properties

Latent Heat of Fusion, J/g 350
370
Specific Heat Capacity, J/kg-K 1000
250
Thermal Expansion, µm/m-K 27
7.0

Otherwise Unclassified Properties

Density, g/cm3 1.7
10
Embodied Carbon, kg CO2/kg material 23
28
Embodied Energy, MJ/kg 160
330
Embodied Water, L/kg 990
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
43 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 160
200 to 630
Stiffness to Weight: Axial, points 15
17
Stiffness to Weight: Bending, points 71
22
Strength to Weight: Axial, points 34
16 to 20
Strength to Weight: Bending, points 46
15 to 17
Thermal Shock Resistance, points 12
19 to 24

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0
Carbon (C), % 0
0.010 to 0.030
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
0 to 0.010
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0
Molybdenum (Mo), % 0
99.3 to 99.5
Nickel (Ni), % 0 to 0.0020
0 to 0.0020
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0030
Silicon (Si), % 0 to 0.1
0 to 0.010
Titanium (Ti), % 0
0.4 to 0.55
Zinc (Zn), % 0 to 0.3
0
Zirconium (Zr), % 0
0.060 to 0.12
Residuals, % 0 to 0.010
0