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R05400 Tantalum vs. Nickel 718

R05400 tantalum belongs to the otherwise unclassified metals classification, while nickel 718 belongs to the nickel alloys. There are 20 material properties with values for both materials. Properties with values for just one material (14, 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 R05400 tantalum and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 1.1 to 28
12 to 50
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 69
75
Tensile Strength: Ultimate (UTS), MPa 210 to 540
930 to 1530
Tensile Strength: Yield (Proof), MPa 140 to 390
510 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 140
310
Specific Heat Capacity, J/kg-K 140
450
Thermal Conductivity, W/m-K 59
11
Thermal Expansion, µm/m-K 6.5
13

Otherwise Unclassified Properties

Density, g/cm3 17
8.3
Embodied Water, L/kg 650
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 53
140 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 420
660 to 4560
Stiffness to Weight: Axial, points 6.2
13
Stiffness to Weight: Bending, points 11
23
Strength to Weight: Axial, points 3.6 to 9.0
31 to 51
Strength to Weight: Bending, points 4.8 to 8.8
25 to 35
Thermal Diffusivity, mm2/s 25
3.0
Thermal Shock Resistance, points 13 to 32
27 to 44

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0 to 0.010
0 to 0.080
Chromium (Cr), % 0
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
11.1 to 24.6
Manganese (Mn), % 0
0 to 0.35
Molybdenum (Mo), % 0 to 0.020
2.8 to 3.3
Nickel (Ni), % 0 to 0.010
50 to 55
Niobium (Nb), % 0 to 0.1
4.8 to 5.5
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.0050
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 99.7 to 100
0
Titanium (Ti), % 0 to 0.010
0.65 to 1.2
Tungsten (W), % 0 to 0.050
0