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R30001 Cobalt vs. Grade 361 Molybdenum

R30001 cobalt belongs to the cobalt alloys classification, while grade 361 molybdenum belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is grade 361 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
310
Elongation at Break, % 1.0
6.3
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 86
120
Tensile Strength: Ultimate (UTS), MPa 620
620

Thermal Properties

Latent Heat of Fusion, J/g 310
370
Specific Heat Capacity, J/kg-K 430
250
Thermal Expansion, µm/m-K 11
7.0

Otherwise Unclassified Properties

Density, g/cm3 9.0
10
Embodied Carbon, kg CO2/kg material 8.9
28
Embodied Energy, MJ/kg 130
330
Embodied Water, L/kg 460
360

Common Calculations

Stiffness to Weight: Axial, points 14
17
Stiffness to Weight: Bending, points 22
22
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 18
16
Thermal Shock Resistance, points 19
21

Alloy Composition

Carbon (C), % 2.0 to 3.0
0 to 0.010
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 43 to 59
0
Iron (Fe), % 0 to 3.0
0 to 0.010
Molybdenum (Mo), % 0 to 1.0
99.9 to 100
Nickel (Ni), % 0 to 3.0
0 to 0.0050
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0070
Silicon (Si), % 0 to 2.0
0 to 0.010
Tungsten (W), % 11 to 13
0