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R30075 Cobalt vs. Type 1 Niobium

R30075 cobalt belongs to the cobalt alloys classification, while Type 1 niobium 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 R30075 cobalt and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
110
Elongation at Break, % 12
29
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 82 to 98
38
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
140
Tensile Strength: Yield (Proof), MPa 480 to 840
82

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Specific Heat Capacity, J/kg-K 450
270
Thermal Conductivity, W/m-K 13
52
Thermal Expansion, µm/m-K 12
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.6
Embodied Water, L/kg 530
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
35
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
32
Stiffness to Weight: Axial, points 14 to 17
6.8
Stiffness to Weight: Bending, points 24 to 25
18
Strength to Weight: Axial, points 26 to 42
4.6
Strength to Weight: Bending, points 22 to 31
7.1
Thermal Diffusivity, mm2/s 3.5
23
Thermal Shock Resistance, points 21 to 29
13

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.010
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.75
0 to 0.0050
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0 to 0.010
Nickel (Ni), % 0 to 0.5
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0 to 0.25
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.010
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0 to 0.1
0 to 0.020
Tungsten (W), % 0 to 0.2
0 to 0.030
Zirconium (Zr), % 0
0 to 0.020