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Grade 365 Molybdenum vs. ISO-WD21150 Magnesium

Grade 365 molybdenum belongs to the otherwise unclassified metals classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (9, 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 ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
45
Elongation at Break, % 6.3
5.7 to 11
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 120
17
Tensile Strength: Ultimate (UTS), MPa 620
240 to 290
Tensile Strength: Yield (Proof), MPa 530
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 370
350
Specific Heat Capacity, J/kg-K 250
990
Thermal Expansion, µm/m-K 7.0
27

Otherwise Unclassified Properties

Density, g/cm3 10
1.7
Embodied Carbon, kg CO2/kg material 28
23
Embodied Energy, MJ/kg 330
160
Embodied Water, L/kg 360
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 450
160 to 460
Stiffness to Weight: Axial, points 17
15
Stiffness to Weight: Bending, points 22
70
Strength to Weight: Axial, points 17
40 to 48
Strength to Weight: Bending, points 16
52 to 58
Thermal Shock Resistance, points 21
15 to 17

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 0 to 0.010
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 99.9 to 100
0
Nickel (Ni), % 0 to 0.0020
0 to 0.0050
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0015
0
Silicon (Si), % 0 to 0.010
0 to 0.1
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3