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6061 Aluminum vs. Type 1 Niobium

6061 aluminum belongs to the aluminum alloys classification, while Type 1 niobium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 6061 aluminum and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 3.4 to 20
29
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 26
38
Tensile Strength: Ultimate (UTS), MPa 130 to 410
140
Tensile Strength: Yield (Proof), MPa 76 to 370
82

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Specific Heat Capacity, J/kg-K 900
270
Thermal Conductivity, W/m-K 170
52
Thermal Expansion, µm/m-K 24
7.3

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.6
Embodied Water, L/kg 1180
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.8 to 81
35
Resilience: Unit (Modulus of Resilience), kJ/m3 42 to 1000
32
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 13 to 42
4.6
Strength to Weight: Bending, points 21 to 45
7.1
Thermal Diffusivity, mm2/s 68
23
Thermal Shock Resistance, points 5.7 to 18
13

Alloy Composition

Aluminum (Al), % 95.9 to 98.6
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0.040 to 0.35
0
Copper (Cu), % 0.15 to 0.4
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.7
0 to 0.0050
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0.4 to 0.8
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0 to 0.15
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0