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EN 2.4654 Nickel vs. R30075 Cobalt

EN 2.4654 nickel belongs to the nickel alloys classification, while R30075 cobalt belongs to the cobalt alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 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 EN 2.4654 nickel and the bottom bar is R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210 to 250
Elongation at Break, % 17
12
Fatigue Strength, MPa 460
250 to 840
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
82 to 98
Tensile Strength: Ultimate (UTS), MPa 1250
780 to 1280
Tensile Strength: Yield (Proof), MPa 850
480 to 840

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1390
1360
Melting Onset (Solidus), °C 1330
1290
Specific Heat Capacity, J/kg-K 460
450
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.4
Embodied Carbon, kg CO2/kg material 10
8.1
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 340
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
84 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1810
560 to 1410
Stiffness to Weight: Axial, points 13
14 to 17
Stiffness to Weight: Bending, points 23
24 to 25
Strength to Weight: Axial, points 42
26 to 42
Strength to Weight: Bending, points 31
22 to 31
Thermal Diffusivity, mm2/s 3.3
3.5
Thermal Shock Resistance, points 37
21 to 29

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0 to 0.1
Boron (B), % 0.0030 to 0.010
0 to 0.010
Carbon (C), % 0.020 to 0.1
0 to 0.35
Chromium (Cr), % 18 to 21
27 to 30
Cobalt (Co), % 12 to 15
58.7 to 68
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 2.0
0 to 0.75
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 3.5 to 5.0
5.0 to 7.0
Nickel (Ni), % 50.6 to 62.5
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.015
0 to 0.020
Silicon (Si), % 0 to 0.15
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 2.8 to 3.3
0 to 0.1
Tungsten (W), % 0
0 to 0.2
Zirconium (Zr), % 0.020 to 0.080
0