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R05400 Tantalum vs. R30035 Cobalt

R05400 tantalum belongs to the otherwise unclassified metals classification, while R30035 cobalt belongs to the cobalt alloys. 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 R05400 tantalum and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.010
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 1.0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 0 to 0.020
9.0 to 10.5
Nickel (Ni), % 0 to 0.010
33 to 37
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 0.015
Silicon (Si), % 0 to 0.0050
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Tantalum (Ta), % 99.7 to 100
0
Titanium (Ti), % 0 to 0.010
0 to 1.0
Tungsten (W), % 0 to 0.050
0

Comparable Variants