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Annealed R30605 Cobalt vs. Annealed R05200 Tantalum

Annealed R30605 cobalt belongs to the cobalt alloys classification, while annealed R05200 tantalum belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is annealed R30605 cobalt and the bottom bar is annealed R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
28
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 81
69
Tensile Strength: Ultimate (UTS), MPa 1130
210
Tensile Strength: Yield (Proof), MPa 470
140

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Melting Completion (Liquidus), °C 1410
3020
Specific Heat Capacity, J/kg-K 410
140
Thermal Conductivity, W/m-K 9.6
59
Thermal Expansion, µm/m-K 12
6.5

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
53
Resilience: Unit (Modulus of Resilience), kJ/m3 520
50
Stiffness to Weight: Axial, points 12
6.2
Stiffness to Weight: Bending, points 21
11
Strength to Weight: Axial, points 33
3.6
Strength to Weight: Bending, points 25
4.8
Thermal Diffusivity, mm2/s 2.5
25
Thermal Shock Resistance, points 31
13

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.010
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 3.0
0 to 0.010
Manganese (Mn), % 1.0 to 2.0
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 9.0 to 11
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
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 14 to 16
0 to 0.050