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R30006 Cobalt vs. Grade 363 Molybdenum

R30006 cobalt belongs to the cobalt alloys classification, while grade 363 molybdenum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is grade 363 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
310
Elongation at Break, % 1.0
6.2 to 11
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 85
120
Tensile Strength: Ultimate (UTS), MPa 900
580 to 720
Tensile Strength: Yield (Proof), MPa 540
350 to 620

Thermal Properties

Latent Heat of Fusion, J/g 320
370
Specific Heat Capacity, J/kg-K 450
250
Thermal Expansion, µm/m-K 11
7.0

Otherwise Unclassified Properties

Density, g/cm3 8.6
10
Embodied Carbon, kg CO2/kg material 7.8
28
Embodied Energy, MJ/kg 110
330
Embodied Water, L/kg 500
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
43 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 670
200 to 630
Stiffness to Weight: Axial, points 14
17
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 29
16 to 20
Strength to Weight: Bending, points 24
15 to 17
Thermal Shock Resistance, points 26
19 to 24

Alloy Composition

Carbon (C), % 0.9 to 1.4
0.010 to 0.030
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Iron (Fe), % 0 to 3.0
0 to 0.010
Molybdenum (Mo), % 0 to 1.0
99.3 to 99.5
Nickel (Ni), % 0 to 3.0
0 to 0.0020
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0030
Silicon (Si), % 0 to 2.0
0 to 0.010
Titanium (Ti), % 0
0.4 to 0.55
Tungsten (W), % 4.0 to 6.0
0
Zirconium (Zr), % 0
0.060 to 0.12