R30006 Cobalt vs. R04295 Alloy

R30006 cobalt belongs to the cobalt alloys classification, while R04295 alloy belongs to the otherwise unclassified metals. 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 R30006 cobalt and the bottom bar is R04295 alloy.

UNS R30006 Co-Cr-W Alloy UNS R04295 Niobium-Hafnium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		100

Elongation at Break, %		1.0
Elongation at Break, %		22

Poisson's Ratio		0.28
Poisson's Ratio		0.38

Shear Modulus, GPa		85
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		900
Tensile Strength: Ultimate (UTS), MPa		410

Tensile Strength: Yield (Proof), MPa		540
Tensile Strength: Yield (Proof), MPa		300

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		300

Specific Heat Capacity, J/kg-K		450
Specific Heat Capacity, J/kg-K		260

Thermal Expansion, µm/m-K		11
Thermal Expansion, µm/m-K		7.2

Otherwise Unclassified Properties

Density, g/cm³		8.6
Density, g/cm³		9.0

Embodied Water, L/kg		500
Embodied Water, L/kg		950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		7.8
Resilience: Ultimate (Unit Rupture Work), MJ/m³		84

Resilience: Unit (Modulus of Resilience), kJ/m³		670
Resilience: Unit (Modulus of Resilience), kJ/m³		430

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		6.3

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		17

Strength to Weight: Axial, points		29
Strength to Weight: Axial, points		13

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		14

Thermal Shock Resistance, points		26
Thermal Shock Resistance, points		40

Alloy Composition

Carbon (C), %		0.9 to 1.4
Carbon (C), %		0 to 0.015

Chromium (Cr), %		27 to 32
Chromium (Cr), %		0

Cobalt (Co), %		48.6 to 68.1
Cobalt (Co), %		0

Hafnium (Hf), %		0
Hafnium (Hf), %		9.0 to 11

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

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

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

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

Niobium (Nb), %		0
Niobium (Nb), %		85.9 to 90.3

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

Oxygen (O), %		0
Oxygen (O), %		0 to 0.025

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

Tantalum (Ta), %		0
Tantalum (Ta), %		0 to 0.5

Titanium (Ti), %		0
Titanium (Ti), %		0.7 to 1.3

Tungsten (W), %		4.0 to 6.0
Tungsten (W), %		0 to 0.5

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.7