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A242.0 Aluminum vs. Type 2 Niobium

A242.0 aluminum belongs to the aluminum alloys classification, while Type 2 niobium belongs to the otherwise unclassified metals. There are 18 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 A242.0 aluminum and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
110
Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 1.6
29
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 27
38
Tensile Strength: Ultimate (UTS), MPa 220
140

Thermal Properties

Latent Heat of Fusion, J/g 390
320
Specific Heat Capacity, J/kg-K 870
270
Thermal Conductivity, W/m-K 140
52
Thermal Expansion, µm/m-K 23
7.3

Otherwise Unclassified Properties

Density, g/cm3 3.1
8.6
Embodied Water, L/kg 1130
160

Common Calculations

Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 20
4.6
Strength to Weight: Bending, points 26
7.1
Thermal Diffusivity, mm2/s 52
23
Thermal Shock Resistance, points 9.3
13

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.8
0 to 0.010
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 1.8 to 2.3
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 to 0.6
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0.070 to 0.2
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0