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7076 Aluminum vs. R05200 Tantalum

7076 aluminum belongs to the aluminum alloys classification, while R05200 tantalum belongs to the otherwise unclassified metals. 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 7076 aluminum and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.2
1.1 to 28
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
69
Tensile Strength: Ultimate (UTS), MPa 530
210 to 540
Tensile Strength: Yield (Proof), MPa 460
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 380
140
Specific Heat Capacity, J/kg-K 860
140
Thermal Conductivity, W/m-K 140
59
Thermal Expansion, µm/m-K 24
6.5

Otherwise Unclassified Properties

Density, g/cm3 3.0
17
Embodied Water, L/kg 1110
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
50 to 420
Stiffness to Weight: Axial, points 13
6.2
Stiffness to Weight: Bending, points 45
11
Strength to Weight: Axial, points 49
3.6 to 9.0
Strength to Weight: Bending, points 48
4.8 to 8.8
Thermal Diffusivity, mm2/s 54
25
Thermal Shock Resistance, points 23
13 to 32

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
0
Carbon (C), % 0
0 to 0.010
Copper (Cu), % 0.3 to 1.0
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.6
0 to 0.010
Magnesium (Mg), % 1.2 to 2.0
0
Manganese (Mn), % 0.3 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 0.015
Silicon (Si), % 0 to 0.4
0 to 0.0050
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0 to 0.2
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 7.0 to 8.0
0
Residuals, % 0 to 0.15
0