R05255 Alloy vs. C54400 Bronze

R05255 alloy belongs to the otherwise unclassified metals classification, while C54400 bronze belongs to the copper alloys. There are 16 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is R05255 alloy and the bottom bar is C54400 bronze.

UNS R05255 Tantalum-Tungsten Alloy UNS C54400 (CW456K) Phosphor Bronze

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		110

Poisson's Ratio		0.34
Poisson's Ratio		0.34

Shear Modulus, GPa		70
Shear Modulus, GPa		40

Tensile Strength: Ultimate (UTS), MPa		540
Tensile Strength: Ultimate (UTS), MPa		330 to 720

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		190

Specific Heat Capacity, J/kg-K		140
Specific Heat Capacity, J/kg-K		370

Thermal Conductivity, W/m-K		59
Thermal Conductivity, W/m-K		86

Thermal Expansion, µm/m-K		6.6
Thermal Expansion, µm/m-K		18

Otherwise Unclassified Properties

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

Embodied Water, L/kg		630
Embodied Water, L/kg		340

Common Calculations

Stiffness to Weight: Axial, points		6.3
Stiffness to Weight: Axial, points		6.8

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

Strength to Weight: Axial, points		9.1
Strength to Weight: Axial, points		10 to 22

Strength to Weight: Bending, points		8.9
Strength to Weight: Bending, points		12 to 20

Thermal Diffusivity, mm²/s		25
Thermal Diffusivity, mm²/s		26

Thermal Shock Resistance, points		31
Thermal Shock Resistance, points		12 to 26

Alloy Composition

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

Copper (Cu), %		0
Copper (Cu), %		85.4 to 91.5

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

Iron (Fe), %		0 to 0.010
Iron (Fe), %		0 to 0.1

Lead (Pb), %		0
Lead (Pb), %		3.5 to 4.5

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

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

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

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

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

Phosphorus (P), %		0
Phosphorus (P), %		0.010 to 0.5

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

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

Tin (Sn), %		0
Tin (Sn), %		3.5 to 4.5

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

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

Zinc (Zn), %		0
Zinc (Zn), %		1.5 to 4.5

Residuals, %		0
Residuals, %		0 to 0.5