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R30001 Cobalt vs. R30816 Cobalt

Both R30001 cobalt and R30816 cobalt are cobalt alloys. They have 73% of their average alloy composition in common. There are 21 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 R30001 cobalt and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 1.0
23
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 86
81
Tensile Strength: Ultimate (UTS), MPa 620
1020

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1530
1540
Melting Onset (Solidus), °C 1260
1460
Specific Heat Capacity, J/kg-K 430
420
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Density, g/cm3 9.0
9.1
Embodied Carbon, kg CO2/kg material 8.9
20
Embodied Energy, MJ/kg 130
320
Embodied Water, L/kg 460
440

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
22
Strength to Weight: Axial, points 19
31
Strength to Weight: Bending, points 18
25
Thermal Diffusivity, mm2/s 3.7
3.3
Thermal Shock Resistance, points 19
28

Alloy Composition

Carbon (C), % 2.0 to 3.0
0.32 to 0.42
Chromium (Cr), % 28 to 32
19 to 21
Cobalt (Co), % 43 to 59
40 to 49.8
Iron (Fe), % 0 to 3.0
0 to 5.0
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0 to 1.0
3.5 to 4.5
Nickel (Ni), % 0 to 3.0
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 11 to 13
3.5 to 4.5