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5050 Aluminum vs. Grade 366 Molybdenum

5050 aluminum belongs to the aluminum alloys classification, while grade 366 molybdenum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 5050 aluminum and the bottom bar is grade 366 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
300
Elongation at Break, % 1.7 to 22
2.2
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 26
120
Tensile Strength: Ultimate (UTS), MPa 140 to 250
580
Tensile Strength: Yield (Proof), MPa 50 to 210
470

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Specific Heat Capacity, J/kg-K 900
210
Thermal Expansion, µm/m-K 24
7.6

Otherwise Unclassified Properties

Density, g/cm3 2.7
12
Embodied Carbon, kg CO2/kg material 8.4
27
Embodied Energy, MJ/kg 150
340
Embodied Water, L/kg 1190
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.1 to 24
12
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 330
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 15 to 26
13
Strength to Weight: Bending, points 22 to 33
13
Thermal Shock Resistance, points 6.3 to 11
18

Alloy Composition

Aluminum (Al), % 96.3 to 98.9
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.7
0 to 0.010
Magnesium (Mg), % 1.1 to 1.8
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
66.9 to 73
Nickel (Ni), % 0
0 to 0.0020
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0025
Silicon (Si), % 0 to 0.4
0 to 0.010
Tungsten (W), % 0
27 to 33
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0