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R05400 Tantalum vs. EN 2.4964 Cobalt

R05400 tantalum belongs to the otherwise unclassified metals classification, while EN 2.4964 cobalt belongs to the cobalt alloys. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R05400 tantalum and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 1.1 to 28
40
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 69
86
Tensile Strength: Ultimate (UTS), MPa 210 to 540
960
Tensile Strength: Yield (Proof), MPa 140 to 390
390

Thermal Properties

Latent Heat of Fusion, J/g 140
290
Specific Heat Capacity, J/kg-K 140
400
Thermal Conductivity, W/m-K 59
15
Thermal Expansion, µm/m-K 6.5
12

Otherwise Unclassified Properties

Density, g/cm3 17
9.6
Embodied Water, L/kg 650
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 53
310
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 420
340
Stiffness to Weight: Axial, points 6.2
13
Stiffness to Weight: Bending, points 11
21
Strength to Weight: Axial, points 3.6 to 9.0
28
Strength to Weight: Bending, points 4.8 to 8.8
23
Thermal Diffusivity, mm2/s 25
3.9
Thermal Shock Resistance, points 13 to 32
25

Alloy Composition

Carbon (C), % 0 to 0.010
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 3.0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
9.0 to 11
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.0050
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 99.7 to 100
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
14 to 16