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Grade 365 Molybdenum vs. 7108 Aluminum

Grade 365 molybdenum belongs to the otherwise unclassified metals classification, while 7108 aluminum belongs to the aluminum alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, 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 7108 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
69
Elongation at Break, % 6.3
11
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 120
26
Tensile Strength: Ultimate (UTS), MPa 620
350
Tensile Strength: Yield (Proof), MPa 530
290

Thermal Properties

Latent Heat of Fusion, J/g 370
380
Specific Heat Capacity, J/kg-K 250
880
Thermal Expansion, µm/m-K 7.0
24

Otherwise Unclassified Properties

Density, g/cm3 10
2.9
Embodied Carbon, kg CO2/kg material 28
8.3
Embodied Energy, MJ/kg 330
150
Embodied Water, L/kg 360
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
38
Resilience: Unit (Modulus of Resilience), kJ/m3 450
620
Stiffness to Weight: Axial, points 17
13
Stiffness to Weight: Bending, points 22
47
Strength to Weight: Axial, points 17
34
Strength to Weight: Bending, points 16
38
Thermal Shock Resistance, points 21
16

Alloy Composition

Aluminum (Al), % 0
92.4 to 94.7
Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 0 to 0.010
0 to 0.1
Magnesium (Mg), % 0
0.7 to 1.4
Manganese (Mn), % 0
0 to 0.050
Molybdenum (Mo), % 99.9 to 100
0
Nickel (Ni), % 0 to 0.0020
0
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0015
0
Silicon (Si), % 0 to 0.010
0 to 0.1
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0
4.5 to 5.5
Zirconium (Zr), % 0
0.12 to 0.25
Residuals, % 0
0 to 0.15