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7075 Aluminum vs. Magnesium Fluoride

7075 aluminum and magnesium fluoride belong to fundamentally different material chemistries. 7075 aluminum is a metal, while magnesium fluoride is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (23, in this case) are not shown.

For each property being compared, the top bar is 7075 aluminum and the bottom bar is magnesium fluoride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
130
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 26
76

Thermal Properties

Melting Onset (Solidus), °C 480
1260
Specific Heat Capacity, J/kg-K 870
980
Thermal Conductivity, W/m-K 130
28
Thermal Expansion, µm/m-K 23
11

Otherwise Unclassified Properties

Density, g/cm3 3.0
3.2

Common Calculations

Stiffness to Weight: Axial, points 13
22
Stiffness to Weight: Bending, points 46
52
Thermal Diffusivity, mm2/s 50
8.8