C34000 Brass vs. C71640 Copper-nickel

Both C34000 brass and C71640 copper-nickel are copper alloys. They have 64% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C34000 brass and the bottom bar is C71640 copper-nickel.

UNS C34000 (CW600N) Leaded Brass UNS C71640 Copper-Nickel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		140

Poisson's Ratio		0.31
Poisson's Ratio		0.33

Shear Modulus, GPa		40
Shear Modulus, GPa		52

Tensile Strength: Ultimate (UTS), MPa		340 to 650
Tensile Strength: Ultimate (UTS), MPa		490 to 630

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		240

Maximum Temperature: Mechanical, °C		120
Maximum Temperature: Mechanical, °C		260

Melting Completion (Liquidus), °C		930
Melting Completion (Liquidus), °C		1180

Melting Onset (Solidus), °C		890
Melting Onset (Solidus), °C		1120

Specific Heat Capacity, J/kg-K		380
Specific Heat Capacity, J/kg-K		410

Thermal Conductivity, W/m-K		120
Thermal Conductivity, W/m-K		29

Thermal Expansion, µm/m-K		21
Thermal Expansion, µm/m-K		15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		26
Electrical Conductivity: Equal Volume, % IACS		7.0

Electrical Conductivity: Equal Weight (Specific), % IACS		29
Electrical Conductivity: Equal Weight (Specific), % IACS		7.1

Otherwise Unclassified Properties

Base Metal Price, % relative		24
Base Metal Price, % relative		40

Density, g/cm³		8.1
Density, g/cm³		8.9

Embodied Carbon, kg CO₂/kg material		2.6
Embodied Carbon, kg CO₂/kg material		5.0

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		73

Embodied Water, L/kg		320
Embodied Water, L/kg		280

Common Calculations

Stiffness to Weight: Axial, points		7.1
Stiffness to Weight: Axial, points		8.7

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		20

Strength to Weight: Axial, points		11 to 22
Strength to Weight: Axial, points		15 to 20

Strength to Weight: Bending, points		13 to 21
Strength to Weight: Bending, points		16 to 18

Thermal Diffusivity, mm²/s		37
Thermal Diffusivity, mm²/s		8.2

Thermal Shock Resistance, points		11 to 22
Thermal Shock Resistance, points		16 to 21

Alloy Composition

Copper (Cu), %		62 to 65
Copper (Cu), %		61.7 to 67.8

Iron (Fe), %		0 to 0.1
Iron (Fe), %		1.7 to 2.3

Lead (Pb), %		0.8 to 1.5
Lead (Pb), %		0 to 0.050

Manganese (Mn), %		0
Manganese (Mn), %		1.5 to 2.5

Nickel (Ni), %		0
Nickel (Ni), %		29 to 32

Zinc (Zn), %		33 to 37.2
Zinc (Zn), %		0 to 1.0

Residuals, %		0
Residuals, %		0 to 0.5