C72200 Copper-nickel vs. C47000 Brass

Both C72200 copper-nickel and C47000 brass are copper alloys. They have 60% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C72200 copper-nickel and the bottom bar is C47000 brass.

UNS C72200 Chromium-Bearing Copper-Nickel UNS C47000 (RBCuZn-A) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		130
Elastic (Young's, Tensile) Modulus, GPa		100

Poisson's Ratio		0.33
Poisson's Ratio		0.3

Shear Modulus, GPa		48
Shear Modulus, GPa		40

Tensile Strength: Ultimate (UTS), MPa		350 to 580
Tensile Strength: Ultimate (UTS), MPa		380

Thermal Properties

Latent Heat of Fusion, J/g		220
Latent Heat of Fusion, J/g		170

Maximum Temperature: Mechanical, °C		230
Maximum Temperature: Mechanical, °C		120

Melting Completion (Liquidus), °C		1180
Melting Completion (Liquidus), °C		900

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

Specific Heat Capacity, J/kg-K		400
Specific Heat Capacity, J/kg-K		390

Thermal Conductivity, W/m-K		34
Thermal Conductivity, W/m-K		120

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		21

Otherwise Unclassified Properties

Base Metal Price, % relative		36
Base Metal Price, % relative		23

Density, g/cm³		8.9
Density, g/cm³		8.0

Embodied Carbon, kg CO₂/kg material		3.9
Embodied Carbon, kg CO₂/kg material		2.7

Embodied Energy, MJ/kg		59
Embodied Energy, MJ/kg		47

Embodied Water, L/kg		300
Embodied Water, L/kg		330

Common Calculations

Stiffness to Weight: Axial, points		8.0
Stiffness to Weight: Axial, points		7.2

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

Strength to Weight: Axial, points		11 to 18
Strength to Weight: Axial, points		13

Strength to Weight: Bending, points		12 to 17
Strength to Weight: Bending, points		15

Thermal Diffusivity, mm²/s		9.6
Thermal Diffusivity, mm²/s		38

Thermal Shock Resistance, points		12 to 20
Thermal Shock Resistance, points		13

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.010

Chromium (Cr), %		0.3 to 0.7
Chromium (Cr), %		0

Copper (Cu), %		78.1 to 84.2
Copper (Cu), %		57 to 61

Iron (Fe), %		0.5 to 1.0
Iron (Fe), %		0

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

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0

Nickel (Ni), %		15 to 18
Nickel (Ni), %		0

Tin (Sn), %		0
Tin (Sn), %		0.25 to 1.0

Zinc (Zn), %		0 to 1.0
Zinc (Zn), %		37.5 to 42.8

Residuals, %		0
Residuals, %		0 to 0.4