60Cr-40Ni Alloy vs. R31538 Cobalt

60Cr-40Ni alloy belongs to the otherwise unclassified metals classification, while R31538 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 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 60Cr-40Ni alloy and the bottom bar is R31538 cobalt.

60Cr-40Ni (R20600) Casting Alloy High Carbon Co-28Cr-6Mo Alloy (ASTM F1537 Alloy 2, ISO 5832-12 Alloy 2, R31538)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.25
Poisson's Ratio		0.29

Shear Modulus, GPa		87
Shear Modulus, GPa		86

Tensile Strength: Ultimate (UTS), MPa		870
Tensile Strength: Ultimate (UTS), MPa		1020 to 1360

Tensile Strength: Yield (Proof), MPa		660
Tensile Strength: Yield (Proof), MPa		580 to 930

Thermal Properties

Latent Heat of Fusion, J/g		370
Latent Heat of Fusion, J/g		320

Specific Heat Capacity, J/kg-K		490
Specific Heat Capacity, J/kg-K		450

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Density, g/cm³		7.8
Density, g/cm³		8.4

Embodied Carbon, kg CO₂/kg material		7.4
Embodied Carbon, kg CO₂/kg material		8.1

Embodied Energy, MJ/kg		110
Embodied Energy, MJ/kg		110

Embodied Water, L/kg		380
Embodied Water, L/kg		530

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m³		1000
Resilience: Unit (Modulus of Resilience), kJ/m³		750 to 1920

Stiffness to Weight: Axial, points		16
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		26
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		31
Strength to Weight: Axial, points		34 to 45

Strength to Weight: Bending, points		26
Strength to Weight: Bending, points		27 to 32

Thermal Shock Resistance, points		18
Thermal Shock Resistance, points		25 to 33

Alloy Composition

Aluminum (Al), %		0 to 0.25
Aluminum (Al), %		0

Carbon (C), %		0 to 0.1
Carbon (C), %		0.15 to 0.35

Chromium (Cr), %		58 to 62
Chromium (Cr), %		26 to 30

Cobalt (Co), %		0
Cobalt (Co), %		58.7 to 68.9

Iron (Fe), %		0 to 1.0
Iron (Fe), %		0 to 0.75

Manganese (Mn), %		0 to 0.3
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		5.0 to 7.0

Nickel (Ni), %		34.5 to 42
Nickel (Ni), %		0 to 1.0

Nitrogen (N), %		0 to 0.3
Nitrogen (N), %		0 to 0.25

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.020
Sulfur (S), %		0

Titanium (Ti), %		0 to 0.5
Titanium (Ti), %		0