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Grade 365 Molybdenum vs. 7049A Aluminum

Grade 365 molybdenum belongs to the otherwise unclassified metals classification, while 7049A 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 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
71
Elongation at Break, % 6.3
5.0 to 5.7
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 120
27
Tensile Strength: Ultimate (UTS), MPa 620
580 to 590
Tensile Strength: Yield (Proof), MPa 530
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 370
370
Specific Heat Capacity, J/kg-K 250
850
Thermal Expansion, µm/m-K 7.0
24

Otherwise Unclassified Properties

Density, g/cm3 10
3.1
Embodied Carbon, kg CO2/kg material 28
8.2
Embodied Energy, MJ/kg 330
150
Embodied Water, L/kg 360
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1800 to 1990
Stiffness to Weight: Axial, points 17
13
Stiffness to Weight: Bending, points 22
44
Strength to Weight: Axial, points 17
52 to 53
Strength to Weight: Bending, points 16
50 to 51
Thermal Shock Resistance, points 21
25

Alloy Composition

Aluminum (Al), % 0
84.6 to 89.5
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 0
1.2 to 1.9
Iron (Fe), % 0 to 0.010
0 to 0.5
Magnesium (Mg), % 0
2.1 to 3.1
Manganese (Mn), % 0
0 to 0.5
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 0.4
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15