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R05200 Tantalum vs. Nickel 685

R05200 tantalum belongs to the otherwise unclassified metals classification, while nickel 685 belongs to the nickel alloys. 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 R05200 tantalum and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 1.1 to 28
17
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 69
77
Tensile Strength: Ultimate (UTS), MPa 210 to 540
1250
Tensile Strength: Yield (Proof), MPa 140 to 390
850

Thermal Properties

Latent Heat of Fusion, J/g 140
320
Specific Heat Capacity, J/kg-K 140
460
Thermal Conductivity, W/m-K 59
13
Thermal Expansion, µm/m-K 6.5
12

Otherwise Unclassified Properties

Density, g/cm3 17
8.4
Embodied Water, L/kg 650
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 53
190
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 420
1820
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
42
Strength to Weight: Bending, points 4.8 to 8.8
31
Thermal Diffusivity, mm2/s 25
3.3
Thermal Shock Resistance, points 13 to 32
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.010
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0
0 to 0.5
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 2.0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 0.020
3.5 to 5.0
Nickel (Ni), % 0 to 0.010
49.6 to 62.5
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.0050
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 99.8 to 100
0
Titanium (Ti), % 0 to 0.010
2.8 to 3.3
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
0.020 to 0.12