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EN AC-45000 Aluminum vs. R05400 Tantalum

EN AC-45000 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 EN AC-45000 aluminum and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 1.1
1.1 to 28
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
69
Tensile Strength: Ultimate (UTS), MPa 180
210 to 540
Tensile Strength: Yield (Proof), MPa 110
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 470
140
Specific Heat Capacity, J/kg-K 870
140
Thermal Conductivity, W/m-K 120
59
Thermal Expansion, µm/m-K 22
6.5

Otherwise Unclassified Properties

Density, g/cm3 3.0
17
Embodied Water, L/kg 1070
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 80
50 to 420
Stiffness to Weight: Axial, points 14
6.2
Stiffness to Weight: Bending, points 47
11
Strength to Weight: Axial, points 17
3.6 to 9.0
Strength to Weight: Bending, points 24
4.8 to 8.8
Thermal Diffusivity, mm2/s 47
25
Thermal Shock Resistance, points 8.0
13 to 32

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.0 to 5.0
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 1.0
0 to 0.010
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0 to 0.45
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), % 5.0 to 7.0
0 to 0.0050
Tantalum (Ta), % 0
99.7 to 100
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0