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50Cr-50Ni-Cb Alloy vs. R30003 Cobalt

50Cr-50Ni-Cb alloy belongs to the otherwise unclassified metals classification, while R30003 cobalt belongs to the cobalt alloys. They have a modest 36% 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 (8, in this case) are not shown.

For each property being compared, the top bar is 50Cr-50Ni-Cb alloy and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 5.6
10 to 73
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 84
83
Tensile Strength: Ultimate (UTS), MPa 620
970 to 1720
Tensile Strength: Yield (Proof), MPa 390
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 350
310
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 60
95
Density, g/cm3 8.0
8.4
Embodied Carbon, kg CO2/kg material 9.2
8.0
Embodied Energy, MJ/kg 130
110
Embodied Water, L/kg 350
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 370
600 to 2790
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
32 to 57
Strength to Weight: Bending, points 20
26 to 38
Thermal Shock Resistance, points 14
26 to 45

Alloy Composition

Aluminum (Al), % 0 to 0.25
0
Boron (B), % 0
0 to 0.1
Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 47 to 52
19 to 21
Cobalt (Co), % 0
39 to 41
Iron (Fe), % 0 to 1.0
10 to 20.5
Manganese (Mn), % 0 to 0.3
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 43.3 to 51.6
14 to 16
Niobium (Nb), % 1.4 to 1.7
0
Nitrogen (N), % 0 to 0.16
0
Phosphorus (P), % 0 to 0.020
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 1.2
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0 to 0.5
0