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R30605 Cobalt vs. 50Cr-50Ni Alloy

R30605 cobalt belongs to the cobalt alloys classification, while 50Cr-50Ni alloy belongs to the otherwise unclassified metals. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is 50Cr-50Ni alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
5.7
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 81
84
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
620
Tensile Strength: Yield (Proof), MPa 470 to 1600
390

Thermal Properties

Latent Heat of Fusion, J/g 290
350
Specific Heat Capacity, J/kg-K 410
490
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.0
Embodied Carbon, kg CO2/kg material 9.8
7.9
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 450
350

Common Calculations

Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 33 to 55
21
Strength to Weight: Bending, points 25 to 36
20
Thermal Shock Resistance, points 31 to 52
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 0.050 to 0.15
0 to 0.1
Chromium (Cr), % 19 to 21
48 to 52
Cobalt (Co), % 46.4 to 57
0
Iron (Fe), % 0 to 3.0
0 to 1.0
Manganese (Mn), % 1.0 to 2.0
0 to 0.3
Nickel (Ni), % 9.0 to 11
44.5 to 52
Nitrogen (N), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.5
Tungsten (W), % 14 to 16
0