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R30006 Cobalt vs. Nickel 30

R30006 cobalt belongs to the cobalt alloys classification, while nickel 30 belongs to the nickel alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 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 R30006 cobalt and the bottom bar is nickel 30.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 1.0
34
Fatigue Strength, MPa 260
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
82
Tensile Strength: Ultimate (UTS), MPa 900
660
Tensile Strength: Yield (Proof), MPa 540
270

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1400
1480
Melting Onset (Solidus), °C 1290
1430
Specific Heat Capacity, J/kg-K 450
450
Thermal Conductivity, W/m-K 15
10
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
1.6

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.5
Embodied Carbon, kg CO2/kg material 7.8
9.4
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 500
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
180
Resilience: Unit (Modulus of Resilience), kJ/m3 670
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 3.9
2.7
Thermal Shock Resistance, points 26
18

Alloy Composition

Carbon (C), % 0.9 to 1.4
0 to 0.030
Chromium (Cr), % 27 to 32
28 to 31.5
Cobalt (Co), % 48.6 to 68.1
0 to 5.0
Copper (Cu), % 0
1.0 to 2.4
Iron (Fe), % 0 to 3.0
13 to 17
Manganese (Mn), % 0
0 to 0.030
Molybdenum (Mo), % 0 to 1.0
4.0 to 6.0
Nickel (Ni), % 0 to 3.0
30.2 to 52.2
Niobium (Nb), % 0
0.3 to 1.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.8
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 4.0 to 6.0
1.5 to 4.0