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R30605 Cobalt vs. EN 2.4654 Nickel

R30605 cobalt belongs to the cobalt alloys classification, while EN 2.4654 nickel belongs to the nickel alloys. They have 45% 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 2.4654 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
17
Fatigue Strength, MPa 260 to 590
460
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
1250
Tensile Strength: Yield (Proof), MPa 470 to 1600
850

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1410
1390
Melting Onset (Solidus), °C 1330
1330
Specific Heat Capacity, J/kg-K 410
460
Thermal Conductivity, W/m-K 9.6
13
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.4
Embodied Carbon, kg CO2/kg material 9.8
10
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
340

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 33 to 55
42
Strength to Weight: Bending, points 25 to 36
31
Thermal Diffusivity, mm2/s 2.5
3.3
Thermal Shock Resistance, points 31 to 52
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.050 to 0.15
0.020 to 0.1
Chromium (Cr), % 19 to 21
18 to 21
Cobalt (Co), % 46.4 to 57
12 to 15
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 3.0
0 to 2.0
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 9.0 to 11
50.6 to 62.5
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 0.4
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.8 to 3.3
Tungsten (W), % 14 to 16
0
Zirconium (Zr), % 0
0.020 to 0.080