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R30035 Cobalt vs. R05200 Tantalum

R30035 cobalt belongs to the cobalt 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 (9, in this case) are not shown.

For each property being compared, the top bar is R30035 cobalt and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220 to 230
190
Elongation at Break, % 9.0 to 46
1.1 to 28
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 84 to 89
69
Tensile Strength: Ultimate (UTS), MPa 900 to 1900
210 to 540
Tensile Strength: Yield (Proof), MPa 300 to 1650
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 320
140
Specific Heat Capacity, J/kg-K 440
140
Thermal Conductivity, W/m-K 11
59
Thermal Expansion, µm/m-K 13
6.5

Otherwise Unclassified Properties

Density, g/cm3 8.7
17
Embodied Water, L/kg 410
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 320
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 5920
50 to 420
Stiffness to Weight: Axial, points 14 to 15
6.2
Stiffness to Weight: Bending, points 23 to 24
11
Strength to Weight: Axial, points 29 to 61
3.6 to 9.0
Strength to Weight: Bending, points 24 to 39
4.8 to 8.8
Thermal Diffusivity, mm2/s 3.0
25
Thermal Shock Resistance, points 23 to 46
13 to 32

Alloy Composition

Boron (B), % 0 to 0.015
0
Carbon (C), % 0 to 0.025
0 to 0.010
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 29.1 to 39
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 1.0
0 to 0.010
Manganese (Mn), % 0 to 0.15
0
Molybdenum (Mo), % 9.0 to 10.5
0 to 0.020
Nickel (Ni), % 33 to 37
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 0.015
0
Silicon (Si), % 0 to 0.15
0 to 0.0050
Sulfur (S), % 0 to 0.010
0
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0 to 1.0
0 to 0.010
Tungsten (W), % 0
0 to 0.050

Comparable Variants