C23000 Brass vs. R05240 Alloy

C23000 brass belongs to the copper alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 18 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 C23000 brass and the bottom bar is R05240 alloy.

UNS C23000 (CW502L) Red Brass 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, %		2.9 to 47
Elongation at Break, %		25

Poisson's Ratio		0.33
Poisson's Ratio		0.36

Shear Modulus, GPa		42
Shear Modulus, GPa		57

Tensile Strength: Ultimate (UTS), MPa		280 to 590
Tensile Strength: Ultimate (UTS), MPa		270

Tensile Strength: Yield (Proof), MPa		83 to 480
Tensile Strength: Yield (Proof), MPa		170

Thermal Properties

Latent Heat of Fusion, J/g		190
Latent Heat of Fusion, J/g		210

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		190

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		6.8

Otherwise Unclassified Properties

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

Embodied Water, L/kg		310
Embodied Water, L/kg		460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		6.2 to 260
Resilience: Ultimate (Unit Rupture Work), MJ/m³		59

Resilience: Unit (Modulus of Resilience), kJ/m³		31 to 1040
Resilience: Unit (Modulus of Resilience), kJ/m³		90

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

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

Strength to Weight: Axial, points		8.9 to 19
Strength to Weight: Axial, points		5.4

Strength to Weight: Bending, points		11 to 18
Strength to Weight: Bending, points		6.8

Thermal Shock Resistance, points		9.4 to 20
Thermal Shock Resistance, points		18

Alloy Composition

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

Copper (Cu), %		84 to 86
Copper (Cu), %		0

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

Iron (Fe), %		0 to 0.050
Iron (Fe), %		0 to 0.010

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

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

Nickel (Ni), %		0
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), %		0
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), %		13.7 to 16
Zinc (Zn), %		0

Residuals, %		0 to 0.2
Residuals, %		0