C27000 Brass vs. C71640 Copper-nickel

Both C27000 brass and C71640 copper-nickel are copper alloys. They have 65% 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 C27000 brass and the bottom bar is C71640 copper-nickel.

UNS C27000 (CW507L) Yellow Brass UNS C71640 Copper-Nickel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
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		370 to 650
Tensile Strength: Ultimate (UTS), MPa		490 to 630

Thermal Properties

Latent Heat of Fusion, J/g		180
Latent Heat of Fusion, J/g		240

Maximum Temperature: Mechanical, °C		130
Maximum Temperature: Mechanical, °C		260

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

Melting Onset (Solidus), °C		900
Melting Onset (Solidus), °C		1120

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		410

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

Thermal Expansion, µm/m-K		20
Thermal Expansion, µm/m-K		15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		27
Electrical Conductivity: Equal Volume, % IACS		7.0

Electrical Conductivity: Equal Weight (Specific), % IACS		30
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		2.7
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		7.2
Stiffness to Weight: Axial, points		8.7

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

Strength to Weight: Axial, points		13 to 22
Strength to Weight: Axial, points		15 to 20

Strength to Weight: Bending, points		14 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		12 to 22
Thermal Shock Resistance, points		16 to 21

Alloy Composition

Copper (Cu), %		63 to 68.5
Copper (Cu), %		61.7 to 67.8

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

Lead (Pb), %		0 to 0.070
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), %		31 to 37
Zinc (Zn), %		0 to 1.0

Residuals, %		0
Residuals, %		0 to 0.5