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50Cr-50Ni-Cb Alloy vs. R30605 Cobalt

50Cr-50Ni-Cb alloy belongs to the otherwise unclassified metals classification, while R30605 cobalt belongs to the cobalt alloys. 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 50Cr-50Ni-Cb alloy and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 5.6
34
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 84
81
Tensile Strength: Ultimate (UTS), MPa 620
1130 to 1900
Tensile Strength: Yield (Proof), MPa 390
470 to 1600

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Specific Heat Capacity, J/kg-K 480
410
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Density, g/cm3 8.0
9.6
Embodied Carbon, kg CO2/kg material 9.2
9.8
Embodied Energy, MJ/kg 130
140
Embodied Water, L/kg 350
450

Common Calculations

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

Alloy Composition

Aluminum (Al), % 0 to 0.25
0
Carbon (C), % 0 to 0.1
0.050 to 0.15
Chromium (Cr), % 47 to 52
19 to 21
Cobalt (Co), % 0
46.4 to 57
Iron (Fe), % 0 to 1.0
0 to 3.0
Manganese (Mn), % 0 to 0.3
1.0 to 2.0
Nickel (Ni), % 43.3 to 51.6
9.0 to 11
Niobium (Nb), % 1.4 to 1.7
0
Nitrogen (N), % 0 to 0.16
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.5
0
Tungsten (W), % 0
14 to 16