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5070 Aluminum vs. R05400 Tantalum

5070 aluminum belongs to the aluminum alloys classification, while R05400 tantalum belongs to the otherwise unclassified metals. There are 20 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 5070 aluminum and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 20
1.1 to 28
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
69
Tensile Strength: Ultimate (UTS), MPa 300
210 to 540
Tensile Strength: Yield (Proof), MPa 140
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 390
140
Specific Heat Capacity, J/kg-K 900
140
Thermal Conductivity, W/m-K 130
59
Thermal Expansion, µm/m-K 24
6.5

Otherwise Unclassified Properties

Density, g/cm3 2.7
17
Embodied Water, L/kg 1170
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 150
50 to 420
Stiffness to Weight: Axial, points 14
6.2
Stiffness to Weight: Bending, points 50
11
Strength to Weight: Axial, points 31
3.6 to 9.0
Strength to Weight: Bending, points 37
4.8 to 8.8
Thermal Diffusivity, mm2/s 53
25
Thermal Shock Resistance, points 14
13 to 32

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.4
0 to 0.010
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.030
Silicon (Si), % 0 to 0.25
0 to 0.0050
Tantalum (Ta), % 0
99.7 to 100
Titanium (Ti), % 0 to 0.15
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0 to 0.15
0