MakeItFrom.com
Menu (ESC)

R30021 Cobalt vs. 50Cr-50Ni-Cb Alloy

R30021 cobalt belongs to the cobalt alloys classification, while 50Cr-50Ni-Cb 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 20 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 R30021 cobalt and the bottom bar is 50Cr-50Ni-Cb alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 9.0
5.6
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 86
84
Tensile Strength: Ultimate (UTS), MPa 700
620
Tensile Strength: Yield (Proof), MPa 500
390

Thermal Properties

Latent Heat of Fusion, J/g 330
350
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 11
15

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 8.0
9.2
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 520
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
30
Resilience: Unit (Modulus of Resilience), kJ/m3 570
370
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
21
Strength to Weight: Bending, points 21
20
Thermal Shock Resistance, points 21
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 0.2 to 0.35
0 to 0.1
Chromium (Cr), % 26 to 29
47 to 52
Cobalt (Co), % 61.7 to 67.3
0
Iron (Fe), % 0 to 3.0
0 to 1.0
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 4.5 to 6.0
0
Nickel (Ni), % 2.0 to 3.0
43.3 to 51.6
Niobium (Nb), % 0
1.4 to 1.7
Nitrogen (N), % 0
0 to 0.16
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.5