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R30003 Cobalt vs. R30816 Cobalt

Both R30003 cobalt and R30816 cobalt are cobalt alloys. They have 84% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30003 cobalt and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 10 to 73
23
Fatigue Strength, MPa 320 to 560
250
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 83
81
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
1020
Tensile Strength: Yield (Proof), MPa 510 to 1090
460

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1400
1540
Melting Onset (Solidus), °C 1440
1460
Specific Heat Capacity, J/kg-K 450
420
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
9.1
Embodied Carbon, kg CO2/kg material 8.0
20
Embodied Energy, MJ/kg 110
320
Embodied Water, L/kg 400
440

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 32 to 57
31
Strength to Weight: Bending, points 26 to 38
25
Thermal Diffusivity, mm2/s 3.3
3.3
Thermal Shock Resistance, points 26 to 45
28

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0.32 to 0.42
Chromium (Cr), % 19 to 21
19 to 21
Cobalt (Co), % 39 to 41
40 to 49.8
Iron (Fe), % 10 to 20.5
0 to 5.0
Manganese (Mn), % 1.5 to 2.5
1.0 to 2.0
Molybdenum (Mo), % 6.0 to 8.0
3.5 to 4.5
Nickel (Ni), % 14 to 16
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 0
3.5 to 4.5