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204.0 Aluminum vs. Type 1 Niobium

204.0 aluminum belongs to the aluminum alloys classification, while Type 1 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 204.0 aluminum and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90 to 120
79
Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 5.7 to 7.8
29
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 27
38
Tensile Strength: Ultimate (UTS), MPa 230 to 340
140
Tensile Strength: Yield (Proof), MPa 180 to 220
82

Thermal Properties

Latent Heat of Fusion, J/g 390
320
Specific Heat Capacity, J/kg-K 880
270
Thermal Conductivity, W/m-K 120
52
Thermal Expansion, µm/m-K 19
7.3

Otherwise Unclassified Properties

Density, g/cm3 3.0
8.6
Embodied Water, L/kg 1150
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 23
35
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 350
32
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 46
18
Strength to Weight: Axial, points 21 to 31
4.6
Strength to Weight: Bending, points 28 to 36
7.1
Thermal Diffusivity, mm2/s 46
23
Thermal Shock Resistance, points 12 to 18
13

Alloy Composition

Aluminum (Al), % 93.4 to 95.5
0
Carbon (C), % 0
0 to 0.010
Copper (Cu), % 4.2 to 5.0
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.35
0 to 0.0050
Magnesium (Mg), % 0.15 to 0.35
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 0 to 0.050
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 to 0.2
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.1
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.15 to 0.3
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0