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6106 Aluminum vs. Type 2 Niobium

6106 aluminum belongs to the aluminum alloys classification, while Type 2 niobium belongs to the otherwise unclassified metals. 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 6106 aluminum and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 9.1
29
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 26
38
Tensile Strength: Ultimate (UTS), MPa 290
140
Tensile Strength: Yield (Proof), MPa 220
82

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Specific Heat Capacity, J/kg-K 900
270
Thermal Conductivity, W/m-K 190
52
Thermal Expansion, µm/m-K 23
7.3

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.6
Embodied Water, L/kg 1190
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
35
Resilience: Unit (Modulus of Resilience), kJ/m3 370
32
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 29
4.6
Strength to Weight: Bending, points 35
7.1
Thermal Diffusivity, mm2/s 78
23
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 97.2 to 99.3
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.35
0 to 0.010
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.050 to 0.2
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
99.5 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Silicon (Si), % 0.3 to 0.6
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0 to 0.1
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.15
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0