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Grade 365 Molybdenum vs. QE22A Magnesium

Grade 365 molybdenum belongs to the otherwise unclassified metals classification, while QE22A magnesium belongs to the magnesium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, 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 grade 365 molybdenum and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
44
Elongation at Break, % 6.3
2.4
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 120
17
Tensile Strength: Ultimate (UTS), MPa 620
250
Tensile Strength: Yield (Proof), MPa 530
190

Thermal Properties

Latent Heat of Fusion, J/g 370
340
Specific Heat Capacity, J/kg-K 250
970
Thermal Expansion, µm/m-K 7.0
27

Otherwise Unclassified Properties

Density, g/cm3 10
2.0
Embodied Carbon, kg CO2/kg material 28
27
Embodied Energy, MJ/kg 330
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 450
400
Stiffness to Weight: Axial, points 17
13
Stiffness to Weight: Bending, points 22
60
Strength to Weight: Axial, points 17
36
Strength to Weight: Bending, points 16
46
Thermal Shock Resistance, points 21
15

Alloy Composition

Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 0.010
0
Magnesium (Mg), % 0
93.1 to 95.8
Molybdenum (Mo), % 99.9 to 100
0
Nickel (Ni), % 0 to 0.0020
0 to 0.010
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0015
0
Silicon (Si), % 0 to 0.010
0
Silver (Ag), % 0
2.0 to 3.0
Unspecified Rare Earths, % 0
1.8 to 2.5
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3