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R31233 Cobalt vs. Type 3 Niobium

R31233 cobalt belongs to the cobalt alloys classification, while Type 3 niobium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R31233 cobalt and the bottom bar is Type 3 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Elongation at Break, % 17
23
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 85
38
Tensile Strength: Ultimate (UTS), MPa 1020
220
Tensile Strength: Yield (Proof), MPa 420
140

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Specific Heat Capacity, J/kg-K 440
270
Thermal Conductivity, W/m-K 12
42
Thermal Expansion, µm/m-K 13
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.6
Embodied Water, L/kg 480
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
44
Resilience: Unit (Modulus of Resilience), kJ/m3 410
93
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 33
7.2
Strength to Weight: Bending, points 26
9.5
Thermal Diffusivity, mm2/s 3.2
18
Thermal Shock Resistance, points 25
21

Alloy Composition

Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0 to 0.010
Chromium (Cr), % 23.5 to 27.5
0
Cobalt (Co), % 44.7 to 63.3
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 1.0 to 5.0
0 to 0.0050
Manganese (Mn), % 0.1 to 1.5
0
Molybdenum (Mo), % 4.0 to 6.0
0 to 0.010
Nickel (Ni), % 7.0 to 11
0 to 0.0050
Niobium (Nb), % 0
98.6 to 99.2
Nitrogen (N), % 0.030 to 0.12
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.050 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.020
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 1.0 to 3.0
0 to 0.030
Zirconium (Zr), % 0
0.8 to 1.2