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EN 2.4964 Cobalt vs. 50Cr-50Ni-Cb Alloy

EN 2.4964 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 (8, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 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, % 40
5.6
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 86
84
Tensile Strength: Ultimate (UTS), MPa 960
620
Tensile Strength: Yield (Proof), MPa 390
390

Thermal Properties

Latent Heat of Fusion, J/g 290
350
Specific Heat Capacity, J/kg-K 400
480
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
9.2
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 450
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
30
Resilience: Unit (Modulus of Resilience), kJ/m3 340
370
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 28
21
Strength to Weight: Bending, points 23
20
Thermal Shock Resistance, points 25
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
47 to 52
Cobalt (Co), % 46.4 to 58
0
Iron (Fe), % 0 to 3.0
0 to 1.0
Manganese (Mn), % 0 to 2.0
0 to 0.3
Nickel (Ni), % 9.0 to 11
43.3 to 51.6
Niobium (Nb), % 0
1.4 to 1.7
Nitrogen (N), % 0
0 to 0.16
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0 to 0.5
Tungsten (W), % 14 to 16
0