C19025 Copper vs. R05255 Alloy

C19025 copper belongs to the copper alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 17 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 C19025 copper and the bottom bar is R05255 alloy.

UNS C19025 Nickel-Tin Copper UNS R05255 Tantalum-Tungsten Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		8.0 to 17
Elongation at Break, %		20

Poisson's Ratio		0.34
Poisson's Ratio		0.34

Shear Modulus, GPa		43
Shear Modulus, GPa		70

Tensile Strength: Ultimate (UTS), MPa		480 to 620
Tensile Strength: Ultimate (UTS), MPa		540

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		140

Specific Heat Capacity, J/kg-K		380
Specific Heat Capacity, J/kg-K		140

Thermal Conductivity, W/m-K		160
Thermal Conductivity, W/m-K		59

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		6.6

Otherwise Unclassified Properties

Density, g/cm³		8.9
Density, g/cm³		17

Embodied Water, L/kg		320
Embodied Water, L/kg		630

Common Calculations

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

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		11

Strength to Weight: Axial, points		15 to 19
Strength to Weight: Axial, points		9.1

Strength to Weight: Bending, points		15 to 18
Strength to Weight: Bending, points		8.9

Thermal Diffusivity, mm²/s		47
Thermal Diffusivity, mm²/s		25

Thermal Shock Resistance, points		17 to 22
Thermal Shock Resistance, points		31

Alloy Composition

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

Copper (Cu), %		97.1 to 98.5
Copper (Cu), %		0

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

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

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

Nickel (Ni), %		0.8 to 1.2
Nickel (Ni), %		0 to 0.010

Niobium (Nb), %		0
Niobium (Nb), %		0 to 0.5

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

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

Phosphorus (P), %		0.030 to 0.070
Phosphorus (P), %		0

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

Tantalum (Ta), %		0
Tantalum (Ta), %		95.9 to 98

Tin (Sn), %		0.7 to 1.1
Tin (Sn), %		0

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

Tungsten (W), %		0
Tungsten (W), %		2.0 to 3.5

Zinc (Zn), %		0 to 0.2
Zinc (Zn), %		0

Residuals, %		0 to 0.3
Residuals, %		0