C99400 Brass vs. R05240 Alloy

C99400 brass belongs to the copper alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 16 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 C99400 brass and the bottom bar is R05240 alloy.

UNS C99400 Brass UNS R05240 Tantalum-Niobium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		150

Poisson's Ratio		0.34
Poisson's Ratio		0.36

Shear Modulus, GPa		44
Shear Modulus, GPa		57

Tensile Strength: Ultimate (UTS), MPa		460 to 550
Tensile Strength: Ultimate (UTS), MPa		270

Tensile Strength: Yield (Proof), MPa		230 to 370
Tensile Strength: Yield (Proof), MPa		170

Thermal Properties

Latent Heat of Fusion, J/g		230
Latent Heat of Fusion, J/g		210

Specific Heat Capacity, J/kg-K		400
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		8.7
Density, g/cm³		14

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

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m³		230 to 590
Resilience: Unit (Modulus of Resilience), kJ/m³		90

Stiffness to Weight: Axial, points		7.5
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 17
Strength to Weight: Axial, points		5.4

Strength to Weight: Bending, points		15 to 17
Strength to Weight: Bending, points		6.8

Thermal Shock Resistance, points		16 to 19
Thermal Shock Resistance, points		18

Alloy Composition

Aluminum (Al), %		0.5 to 2.0
Aluminum (Al), %		0

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

Copper (Cu), %		83.5 to 96.5
Copper (Cu), %		0

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

Iron (Fe), %		1.0 to 3.0
Iron (Fe), %		0 to 0.010

Lead (Pb), %		0 to 0.25
Lead (Pb), %		0

Manganese (Mn), %		0 to 0.5
Manganese (Mn), %		0

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

Nickel (Ni), %		1.0 to 3.5
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), %		0.5 to 2.0
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), %		0.5 to 5.0
Zinc (Zn), %		0

Residuals, %		0 to 0.3
Residuals, %		0