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384.0 Aluminum vs. Type 2 Niobium

384.0 aluminum belongs to the aluminum alloys classification, while Type 2 niobium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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 384.0 aluminum and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
110
Elastic (Young's, Tensile) Modulus, GPa 74
110
Elongation at Break, % 2.5
29
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 28
38
Tensile Strength: Ultimate (UTS), MPa 330
140
Tensile Strength: Yield (Proof), MPa 170
82

Thermal Properties

Latent Heat of Fusion, J/g 550
320
Specific Heat Capacity, J/kg-K 870
270
Thermal Conductivity, W/m-K 96
52
Thermal Expansion, µm/m-K 21
7.3

Otherwise Unclassified Properties

Density, g/cm3 2.9
8.6
Embodied Water, L/kg 1010
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
35
Resilience: Unit (Modulus of Resilience), kJ/m3 190
32
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 49
18
Strength to Weight: Axial, points 32
4.6
Strength to Weight: Bending, points 37
7.1
Thermal Diffusivity, mm2/s 39
23
Thermal Shock Resistance, points 15
13

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0
Carbon (C), % 0
0 to 0.010
Copper (Cu), % 3.0 to 4.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 1.3
0 to 0.010
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0 to 0.5
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), % 10.5 to 12
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.3
Tin (Sn), % 0 to 0.35
0
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 3.0
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.5
0