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EN 2.4964 Cobalt vs. Nickel 825

EN 2.4964 cobalt belongs to the cobalt alloys classification, while nickel 825 belongs to the nickel alloys. They have a modest 32% 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 (5, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is nickel 825.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 40
34
Fatigue Strength, MPa 220
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 86
78
Tensile Strength: Ultimate (UTS), MPa 960
650
Tensile Strength: Yield (Proof), MPa 390
260

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1630
1400
Melting Onset (Solidus), °C 1550
1370
Specific Heat Capacity, J/kg-K 400
460
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
1.7

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.2
Embodied Carbon, kg CO2/kg material 9.8
7.2
Embodied Energy, MJ/kg 140
100
Embodied Water, L/kg 450
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
180
Resilience: Unit (Modulus of Resilience), kJ/m3 340
170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 28
22
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 3.9
2.9
Thermal Shock Resistance, points 25
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Carbon (C), % 0.050 to 0.15
0 to 0.050
Chromium (Cr), % 19 to 21
19.5 to 23.5
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
1.5 to 3.0
Iron (Fe), % 0 to 3.0
22 to 37.9
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 9.0 to 11
38 to 46
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.050
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.6 to 1.2
Tungsten (W), % 14 to 16
0