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R30006 Cobalt vs. Nickel 625

R30006 cobalt belongs to the cobalt alloys classification, while nickel 625 belongs to the nickel alloys. They have a modest 26% 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 (7, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is nickel 625.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 1.0
33 to 34
Fatigue Strength, MPa 260
240 to 320
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
79
Tensile Strength: Ultimate (UTS), MPa 900
790 to 910
Tensile Strength: Yield (Proof), MPa 540
320 to 450

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Melting Completion (Liquidus), °C 1400
1350
Melting Onset (Solidus), °C 1290
1290
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
1.4

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.6
Embodied Carbon, kg CO2/kg material 7.8
14
Embodied Energy, MJ/kg 110
190
Embodied Water, L/kg 500
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
220 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 670
260 to 490
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 29
26 to 29
Strength to Weight: Bending, points 24
22 to 24
Thermal Diffusivity, mm2/s 3.9
2.9
Thermal Shock Resistance, points 26
22 to 25

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Carbon (C), % 0.9 to 1.4
0 to 0.1
Chromium (Cr), % 27 to 32
20 to 23
Cobalt (Co), % 48.6 to 68.1
0 to 1.0
Iron (Fe), % 0 to 3.0
0 to 5.0
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0 to 1.0
8.0 to 10
Nickel (Ni), % 0 to 3.0
58 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0 to 0.4
Tungsten (W), % 4.0 to 6.0
0