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R05200 Tantalum vs. 7049 Aluminum

R05200 tantalum belongs to the otherwise unclassified metals classification, while 7049 aluminum belongs to the aluminum alloys. There are 20 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 R05200 tantalum and the bottom bar is 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 1.1 to 28
6.2 to 7.0
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 69
27
Tensile Strength: Ultimate (UTS), MPa 210 to 540
510 to 530
Tensile Strength: Yield (Proof), MPa 140 to 390
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 140
370
Specific Heat Capacity, J/kg-K 140
860
Thermal Conductivity, W/m-K 59
130
Thermal Expansion, µm/m-K 6.5
23

Otherwise Unclassified Properties

Density, g/cm3 17
3.1
Embodied Water, L/kg 650
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 53
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 420
1270 to 1440
Stiffness to Weight: Axial, points 6.2
13
Stiffness to Weight: Bending, points 11
45
Strength to Weight: Axial, points 3.6 to 9.0
46 to 47
Strength to Weight: Bending, points 4.8 to 8.8
46 to 47
Thermal Diffusivity, mm2/s 25
51
Thermal Shock Resistance, points 13 to 32
22 to 23

Alloy Composition


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Aluminum (Al), % 0
85.7 to 89.5
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 0
0.1 to 0.22
Copper (Cu), % 0
1.2 to 1.9
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 0.35
Magnesium (Mg), % 0
2.0 to 2.9
Manganese (Mn), % 0
0 to 0.2
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Silicon (Si), % 0 to 0.0050
0 to 0.25
Tantalum (Ta), % 99.8 to 100
0
Titanium (Ti), % 0 to 0.010
0 to 0.1
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
7.2 to 8.2
Residuals, % 0
0 to 0.15