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Grade 365 Molybdenum vs. 7049 Aluminum

Grade 365 molybdenum belongs to the otherwise unclassified metals classification, while 7049 aluminum belongs to the aluminum alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, 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 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
70
Elongation at Break, % 6.3
6.2 to 7.0
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 120
27
Tensile Strength: Ultimate (UTS), MPa 620
510 to 530
Tensile Strength: Yield (Proof), MPa 530
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 370
370
Specific Heat Capacity, J/kg-K 250
860
Thermal Expansion, µm/m-K 7.0
23

Otherwise Unclassified Properties

Density, g/cm3 10
3.1
Embodied Carbon, kg CO2/kg material 28
8.1
Embodied Energy, MJ/kg 330
140
Embodied Water, L/kg 360
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1270 to 1440
Stiffness to Weight: Axial, points 17
13
Stiffness to Weight: Bending, points 22
45
Strength to Weight: Axial, points 17
46 to 47
Strength to Weight: Bending, points 16
46 to 47
Thermal Shock Resistance, points 21
22 to 23

Alloy Composition

Aluminum (Al), % 0
85.7 to 89.5
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 0
0.1 to 0.22
Copper (Cu), % 0
1.2 to 1.9
Iron (Fe), % 0 to 0.010
0 to 0.35
Magnesium (Mg), % 0
2.0 to 2.9
Manganese (Mn), % 0
0 to 0.2
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 0.25
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
7.2 to 8.2
Residuals, % 0
0 to 0.15