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7010 Aluminum vs. Nuclear Grade Hafnium

7010 aluminum belongs to the aluminum alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (13, 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 7010 aluminum and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
78
Elongation at Break, % 3.9 to 6.8
25
Poisson's Ratio 0.32
0.26
Shear Modulus, GPa 26
31
Tensile Strength: Ultimate (UTS), MPa 520 to 590
350
Tensile Strength: Yield (Proof), MPa 410 to 540
170

Thermal Properties

Latent Heat of Fusion, J/g 380
130
Specific Heat Capacity, J/kg-K 860
140
Thermal Expansion, µm/m-K 24
5.9

Otherwise Unclassified Properties

Density, g/cm3 3.0
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 33
73
Resilience: Unit (Modulus of Resilience), kJ/m3 1230 to 2130
180
Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 45
11
Strength to Weight: Axial, points 47 to 54
7.4
Strength to Weight: Bending, points 47 to 52
8.4
Thermal Shock Resistance, points 22 to 26
55

Alloy Composition

Aluminum (Al), % 87.9 to 90.6
0
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 1.5 to 2.0
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 0 to 0.15
0
Magnesium (Mg), % 2.1 to 2.6
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.050
0
Silicon (Si), % 0 to 0.12
0
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.7 to 6.7
0
Zirconium (Zr), % 0.1 to 0.16
0
Residuals, % 0
0 to 0.23