MakeItFrom.com
Menu (ESC)

50Cr-50Ni Alloy vs. R31539 Cobalt

50Cr-50Ni alloy belongs to the otherwise unclassified metals classification, while R31539 cobalt belongs to the cobalt alloys. They have a modest 30% 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 50Cr-50Ni alloy and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 5.7
13 to 22
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 84
86
Tensile Strength: Ultimate (UTS), MPa 620
1000 to 1340
Tensile Strength: Yield (Proof), MPa 390
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Specific Heat Capacity, J/kg-K 490
450
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Density, g/cm3 8.0
8.4
Embodied Carbon, kg CO2/kg material 7.9
8.2
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 350
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 350
780 to 2000
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
33 to 44
Strength to Weight: Bending, points 20
27 to 32
Thermal Shock Resistance, points 14
24 to 32

Alloy Composition

Aluminum (Al), % 0 to 0.25
0.3 to 1.0
Carbon (C), % 0 to 0.1
0 to 0.14
Chromium (Cr), % 48 to 52
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Iron (Fe), % 0 to 1.0
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0 to 0.3
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 44.5 to 52
0 to 1.0
Nitrogen (N), % 0 to 0.3
0 to 0.25
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.5
0