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R30605 Cobalt vs. R30016 Cobalt

Both R30605 cobalt and R30016 cobalt are cobalt alloys. They have 81% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 34
8.4
Fatigue Strength, MPa 260 to 590
290
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
85
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
1010
Tensile Strength: Yield (Proof), MPa 470 to 1600
580

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1410
1360
Melting Onset (Solidus), °C 1330
1270
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 9.6
15
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.0

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.5
Embodied Carbon, kg CO2/kg material 9.8
7.7
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 450
500

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 33 to 55
33
Strength to Weight: Bending, points 25 to 36
26
Thermal Diffusivity, mm2/s 2.5
3.9
Thermal Shock Resistance, points 31 to 52
24

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.9 to 1.4
Chromium (Cr), % 19 to 21
28 to 32
Cobalt (Co), % 46.4 to 57
49.6 to 66.9
Iron (Fe), % 0 to 3.0
0 to 3.0
Manganese (Mn), % 1.0 to 2.0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 9.0 to 11
0 to 3.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0.2 to 2.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 14 to 16
3.5 to 5.5