R60705 Alloy vs. C18700 Copper

R60705 alloy belongs to the otherwise unclassified metals classification, while C18700 copper belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R60705 alloy and the bottom bar is C18700 copper.

UNS R60705 Zirconium-Niobium Alloy UNS C18700 (CW113C) Leaded Copper

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		98
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		18
Elongation at Break, %		9.0 to 9.6

Poisson's Ratio		0.34
Poisson's Ratio		0.34

Shear Modulus, GPa		37
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		540
Tensile Strength: Ultimate (UTS), MPa		290 to 330

Tensile Strength: Yield (Proof), MPa		430
Tensile Strength: Yield (Proof), MPa		230 to 250

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		210

Specific Heat Capacity, J/kg-K		270
Specific Heat Capacity, J/kg-K		380

Thermal Conductivity, W/m-K		17
Thermal Conductivity, W/m-K		380

Thermal Expansion, µm/m-K		6.3
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Density, g/cm³		6.7
Density, g/cm³		9.0

Embodied Water, L/kg		450
Embodied Water, L/kg		310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		90
Resilience: Ultimate (Unit Rupture Work), MJ/m³		24 to 29

Resilience: Unit (Modulus of Resilience), kJ/m³		950
Resilience: Unit (Modulus of Resilience), kJ/m³		240 to 280

Stiffness to Weight: Axial, points		8.1
Stiffness to Weight: Axial, points		7.1

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		22
Strength to Weight: Axial, points		9.0 to 10

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		11 to 12

Thermal Diffusivity, mm²/s		9.5
Thermal Diffusivity, mm²/s		110

Thermal Shock Resistance, points		63
Thermal Shock Resistance, points		10 to 12

Alloy Composition

Carbon (C), %		0 to 0.050
Carbon (C), %		0

Chromium (Cr), %		0 to 0.2
Chromium (Cr), %		0

Copper (Cu), %		0
Copper (Cu), %		98 to 99.2

Hafnium (Hf), %		0 to 4.5
Hafnium (Hf), %		0

Hydrogen (H), %		0 to 0.0050
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.2
Iron (Fe), %		0

Lead (Pb), %		0
Lead (Pb), %		0.8 to 1.5

Niobium (Nb), %		2.0 to 3.0
Niobium (Nb), %		0

Nitrogen (N), %		0 to 0.025
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.18
Oxygen (O), %		0

Zirconium (Zr), %		91 to 98
Zirconium (Zr), %		0

Residuals, %		0
Residuals, %		0 to 0.5