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R30605 Cobalt vs. EN 2.4878 Nickel

R30605 cobalt belongs to the cobalt alloys classification, while EN 2.4878 nickel belongs to the nickel alloys. They have 51% of their average alloy composition in common. There are 23 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 R30605 cobalt and the bottom bar is EN 2.4878 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
13 to 17
Fatigue Strength, MPa 260 to 590
400 to 410
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
78
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
1210 to 1250
Tensile Strength: Yield (Proof), MPa 470 to 1600
740 to 780

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Melting Completion (Liquidus), °C 1410
1370
Melting Onset (Solidus), °C 1330
1320
Specific Heat Capacity, J/kg-K 410
460
Thermal Conductivity, W/m-K 9.6
11
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.3
Embodied Carbon, kg CO2/kg material 9.8
10
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
370

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 33 to 55
41 to 42
Strength to Weight: Bending, points 25 to 36
31
Thermal Diffusivity, mm2/s 2.5
2.8
Thermal Shock Resistance, points 31 to 52
37 to 39

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.010 to 0.015
Carbon (C), % 0.050 to 0.15
0.030 to 0.070
Chromium (Cr), % 19 to 21
23 to 25
Cobalt (Co), % 46.4 to 57
19 to 21
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 3.0
0 to 1.0
Manganese (Mn), % 1.0 to 2.0
0 to 0.5
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 9.0 to 11
43.6 to 52.2
Niobium (Nb), % 0
0.7 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0070
Tantalum (Ta), % 0
0 to 0.050
Titanium (Ti), % 0
2.8 to 3.2
Tungsten (W), % 14 to 16
0
Zirconium (Zr), % 0
0.030 to 0.070

Comparable Variants