R30001 Cobalt vs. 50Cr-50Ni Alloy

R30001 cobalt belongs to the cobalt alloys classification, while 50Cr-50Ni alloy belongs to the otherwise unclassified metals. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 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 R30001 cobalt and the bottom bar is 50Cr-50Ni alloy.

UNS R30001 Co-Cr-W Alloy 50Cr-50Ni (R20500) Casting Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		210

Elongation at Break, %		1.0
Elongation at Break, %		5.7

Poisson's Ratio		0.28
Poisson's Ratio		0.26

Shear Modulus, GPa		86
Shear Modulus, GPa		84

Tensile Strength: Ultimate (UTS), MPa		620
Tensile Strength: Ultimate (UTS), MPa		620

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		350

Specific Heat Capacity, J/kg-K		430
Specific Heat Capacity, J/kg-K		490

Thermal Expansion, µm/m-K		11
Thermal Expansion, µm/m-K		15

Otherwise Unclassified Properties

Density, g/cm³		9.0
Density, g/cm³		8.0

Embodied Carbon, kg CO₂/kg material		8.9
Embodied Carbon, kg CO₂/kg material		7.9

Embodied Energy, MJ/kg		130
Embodied Energy, MJ/kg		110

Embodied Water, L/kg		460
Embodied Water, L/kg		350

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		19
Strength to Weight: Axial, points		21

Strength to Weight: Bending, points		18
Strength to Weight: Bending, points		20

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		14

Alloy Composition

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

Carbon (C), %		2.0 to 3.0
Carbon (C), %		0 to 0.1

Chromium (Cr), %		28 to 32
Chromium (Cr), %		48 to 52

Cobalt (Co), %		43 to 59
Cobalt (Co), %		0

Iron (Fe), %		0 to 3.0
Iron (Fe), %		0 to 1.0

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

Molybdenum (Mo), %		0 to 1.0
Molybdenum (Mo), %		0

Nickel (Ni), %		0 to 3.0
Nickel (Ni), %		44.5 to 52

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

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

Silicon (Si), %		0 to 2.0
Silicon (Si), %		0 to 1.0

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

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

Tungsten (W), %		11 to 13
Tungsten (W), %		0