C70700 Copper-nickel vs. R04295 Alloy

C70700 copper-nickel belongs to the copper 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 C70700 copper-nickel and the bottom bar is R04295 alloy.

UNS C70700 (CuNi10) Copper-Nickel UNS R04295 Niobium-Hafnium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		39
Elongation at Break, %		22

Poisson's Ratio		0.34
Poisson's Ratio		0.38

Shear Modulus, GPa		46
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		320
Tensile Strength: Ultimate (UTS), MPa		410

Tensile Strength: Yield (Proof), MPa		110
Tensile Strength: Yield (Proof), MPa		300

Thermal Properties

Latent Heat of Fusion, J/g		220
Latent Heat of Fusion, J/g		300

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

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		7.2

Otherwise Unclassified Properties

Density, g/cm³		8.9
Density, g/cm³		9.0

Embodied Water, L/kg		300
Embodied Water, L/kg		950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		100
Resilience: Ultimate (Unit Rupture Work), MJ/m³		84

Resilience: Unit (Modulus of Resilience), kJ/m³		51
Resilience: Unit (Modulus of Resilience), kJ/m³		430

Stiffness to Weight: Axial, points		7.6
Stiffness to Weight: Axial, points		6.3

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		17

Strength to Weight: Axial, points		10
Strength to Weight: Axial, points		13

Strength to Weight: Bending, points		12
Strength to Weight: Bending, points		14

Thermal Shock Resistance, points		12
Thermal Shock Resistance, points		40

Alloy Composition

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

Copper (Cu), %		88.5 to 90.5
Copper (Cu), %		0

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

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

Iron (Fe), %		0 to 0.050
Iron (Fe), %		0

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

Nickel (Ni), %		9.5 to 10.5
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

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

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

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

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

Residuals, %		0 to 0.5
Residuals, %		0