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R31538 Cobalt vs. 60Cr-40Ni Alloy

R31538 cobalt belongs to the cobalt alloys classification, while 60Cr-40Ni alloy belongs to the otherwise unclassified metals. They have a modest 30% 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 (12, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is 60Cr-40Ni alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 86
87
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
870
Tensile Strength: Yield (Proof), MPa 580 to 930
660

Thermal Properties

Latent Heat of Fusion, J/g 320
370
Specific Heat Capacity, J/kg-K 450
490
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.1
7.4
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 530
380

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
1000
Stiffness to Weight: Axial, points 15
16
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 34 to 45
31
Strength to Weight: Bending, points 27 to 32
26
Thermal Shock Resistance, points 25 to 33
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 0.15 to 0.35
0 to 0.1
Chromium (Cr), % 26 to 30
58 to 62
Cobalt (Co), % 58.7 to 68.9
0
Iron (Fe), % 0 to 0.75
0 to 1.0
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
34.5 to 42
Nitrogen (N), % 0 to 0.25
0 to 0.3
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.5