C63800 Bronze vs. R05240 Alloy

C63800 bronze belongs to the copper alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is C63800 bronze and the bottom bar is R05240 alloy.

UNS C63800 Aluminum Bronze UNS R05240 Tantalum-Niobium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		150

Elongation at Break, %		7.9 to 41
Elongation at Break, %		25

Poisson's Ratio		0.34
Poisson's Ratio		0.36

Shear Modulus, GPa		43
Shear Modulus, GPa		57

Tensile Strength: Ultimate (UTS), MPa		460 to 1010
Tensile Strength: Ultimate (UTS), MPa		270

Thermal Properties

Latent Heat of Fusion, J/g		240
Latent Heat of Fusion, J/g		210

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		190

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		6.8

Otherwise Unclassified Properties

Density, g/cm³		8.6
Density, g/cm³		14

Embodied Water, L/kg		330
Embodied Water, L/kg		460

Common Calculations

Stiffness to Weight: Axial, points		7.4
Stiffness to Weight: Axial, points		6.3

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		13

Strength to Weight: Axial, points		15 to 33
Strength to Weight: Axial, points		5.4

Strength to Weight: Bending, points		15 to 26
Strength to Weight: Bending, points		6.8

Thermal Shock Resistance, points		17 to 36
Thermal Shock Resistance, points		18

Alloy Composition

Aluminum (Al), %		2.5 to 3.1
Aluminum (Al), %		0

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

Cobalt (Co), %		0.25 to 0.55
Cobalt (Co), %		0

Copper (Cu), %		92.4 to 95.8
Copper (Cu), %		0

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

Iron (Fe), %		0 to 0.2
Iron (Fe), %		0 to 0.010

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0

Manganese (Mn), %		0 to 0.1
Manganese (Mn), %		0

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

Nickel (Ni), %		0 to 0.2
Nickel (Ni), %		0 to 0.010

Niobium (Nb), %		0
Niobium (Nb), %		35 to 42

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

Oxygen (O), %		0
Oxygen (O), %		0 to 0.020

Silicon (Si), %		1.5 to 2.1
Silicon (Si), %		0 to 0.0050

Tantalum (Ta), %		0
Tantalum (Ta), %		57.9 to 65

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

Tungsten (W), %		0
Tungsten (W), %		0 to 0.050

Zinc (Zn), %		0 to 0.8
Zinc (Zn), %		0

Residuals, %		0 to 0.5
Residuals, %		0