R30016 Cobalt vs. R05252 Alloy

R30016 cobalt belongs to the cobalt alloys classification, while R05252 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is R05252 alloy.

UNS R30016 Co-Cr-W Alloy UNS R05252 Tantalum-Tungsten Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		8.4
Elongation at Break, %		23

Poisson's Ratio		0.28
Poisson's Ratio		0.33

Shear Modulus, GPa		85
Shear Modulus, GPa		73

Tensile Strength: Ultimate (UTS), MPa		1010
Tensile Strength: Ultimate (UTS), MPa		310

Tensile Strength: Yield (Proof), MPa		580
Tensile Strength: Yield (Proof), MPa		220

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		140

Specific Heat Capacity, J/kg-K		450
Specific Heat Capacity, J/kg-K		140

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		6.7

Otherwise Unclassified Properties

Density, g/cm³		8.5
Density, g/cm³		17

Embodied Water, L/kg		500
Embodied Water, L/kg		600

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		72
Resilience: Ultimate (Unit Rupture Work), MJ/m³		63

Resilience: Unit (Modulus of Resilience), kJ/m³		770
Resilience: Unit (Modulus of Resilience), kJ/m³		120

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		6.5

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		12

Strength to Weight: Axial, points		33
Strength to Weight: Axial, points		5.2

Strength to Weight: Bending, points		26
Strength to Weight: Bending, points		6.1

Thermal Shock Resistance, points		24
Thermal Shock Resistance, points		17

Alloy Composition

Carbon (C), %		0.9 to 1.4
Carbon (C), %		0 to 0.010

Chromium (Cr), %		28 to 32
Chromium (Cr), %		0

Cobalt (Co), %		49.6 to 66.9
Cobalt (Co), %		0

Hydrogen (H), %		0
Hydrogen (H), %		0 to 0.0015

Iron (Fe), %		0 to 3.0
Iron (Fe), %		0 to 0.010

Manganese (Mn), %		0.5 to 2.0
Manganese (Mn), %		0

Molybdenum (Mo), %		0 to 1.5
Molybdenum (Mo), %		0 to 0.020

Nickel (Ni), %		0 to 3.0
Nickel (Ni), %		0 to 0.010

Niobium (Nb), %		0
Niobium (Nb), %		0 to 0.1

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.010

Oxygen (O), %		0
Oxygen (O), %		0 to 0.015

Silicon (Si), %		0.2 to 2.0
Silicon (Si), %		0 to 0.0050

Tantalum (Ta), %		0
Tantalum (Ta), %		88.8 to 91

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.010

Tungsten (W), %		3.5 to 5.5
Tungsten (W), %		9.0 to 11