R04295 Alloy vs. C14181 Copper

R04295 alloy belongs to the otherwise unclassified metals classification, while C14181 copper belongs to the copper alloys. There are 18 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R04295 alloy and the bottom bar is C14181 copper.

UNS R04295 Niobium-Hafnium Alloy UNS C14181 (BVCu-1x) Vacuum Service Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		22
Elongation at Break, %		15

Poisson's Ratio		0.38
Poisson's Ratio		0.34

Shear Modulus, GPa		37
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		410
Tensile Strength: Ultimate (UTS), MPa		210

Tensile Strength: Yield (Proof), MPa		300
Tensile Strength: Yield (Proof), MPa		130

Thermal Properties

Latent Heat of Fusion, J/g		300
Latent Heat of Fusion, J/g		210

Specific Heat Capacity, J/kg-K		260
Specific Heat Capacity, J/kg-K		390

Thermal Expansion, µm/m-K		7.2
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

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

Embodied Water, L/kg		950
Embodied Water, L/kg		310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		84
Resilience: Ultimate (Unit Rupture Work), MJ/m³		28

Resilience: Unit (Modulus of Resilience), kJ/m³		430
Resilience: Unit (Modulus of Resilience), kJ/m³		69

Stiffness to Weight: Axial, points		6.3
Stiffness to Weight: Axial, points		7.2

Stiffness to Weight: Bending, points		17
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		13
Strength to Weight: Axial, points		6.5

Strength to Weight: Bending, points		14
Strength to Weight: Bending, points		8.8

Thermal Shock Resistance, points		40
Thermal Shock Resistance, points		7.4

Alloy Composition

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.0020

Carbon (C), %		0 to 0.015
Carbon (C), %		0 to 0.0050

Copper (Cu), %		0
Copper (Cu), %		99.9 to 100

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

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

Lead (Pb), %		0
Lead (Pb), %		0 to 0.0020

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

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

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

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.0020

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

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

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

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.0020

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