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6101 Aluminum vs. Nuclear Grade Hafnium

6101 aluminum belongs to the aluminum alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 10 material properties with values for both materials. Properties with values for just one material (18, 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 6101 aluminum and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7
13
Elastic (Young's, Tensile) Modulus, GPa 68
78
Elongation at Break, % 10 to 25
25
Latent Heat of Fusion, J/g 400
130
Poisson's Ratio 0.33
0.26
Shear Modulus, GPa 26
31
Specific Heat Capacity, J/kg-K 900
140
Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 50
11
Thermal Expansion, µm/m-K 23
5.9

Alloy Composition

Aluminum (Al), % 97.6 to 99.4
0
Boron (B), % 0 to 0.060
0
Chromium (Cr), % 0 to 0.030
0
Copper (Cu), % 0 to 0.1
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0.35 to 0.8
0
Manganese (Mn), % 0 to 0.030
0
Silicon (Si), % 0.3 to 0.7
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.23