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R30075 Cobalt vs. Grade 363 Molybdenum

R30075 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 (8, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is grade 363 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
310
Elongation at Break, % 12
6.2 to 11
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 82 to 98
120
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
580 to 720
Tensile Strength: Yield (Proof), MPa 480 to 840
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 12
7.0

Otherwise Unclassified Properties

Density, g/cm3 8.4
10
Embodied Carbon, kg CO2/kg material 8.1
28
Embodied Energy, MJ/kg 110
330
Embodied Water, L/kg 530
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
43 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
200 to 630
Stiffness to Weight: Axial, points 14 to 17
17
Stiffness to Weight: Bending, points 24 to 25
22
Strength to Weight: Axial, points 26 to 42
16 to 20
Strength to Weight: Bending, points 22 to 31
15 to 17
Thermal Shock Resistance, points 21 to 29
19 to 24

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0.010 to 0.030
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0
Iron (Fe), % 0 to 0.75
0 to 0.010
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
99.3 to 99.5
Nickel (Ni), % 0 to 0.5
0 to 0.0020
Nitrogen (N), % 0 to 0.25
0 to 0.0020
Oxygen (O), % 0
0 to 0.0030
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.1
0.4 to 0.55
Tungsten (W), % 0 to 0.2
0
Zirconium (Zr), % 0
0.060 to 0.12