C37100 Brass vs. C71000 Copper-nickel

Both C37100 brass and C71000 copper-nickel are copper alloys. They have 61% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C37100 brass and the bottom bar is C71000 copper-nickel.

UNS C37100 Leaded Brass UNS C71000 Copper-Nickel

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.31
Poisson's Ratio		0.33

Rockwell Superficial 30T Hardness		43 to 71
Rockwell Superficial 30T Hardness		56 to 73

Shear Modulus, GPa		40
Shear Modulus, GPa		49

Tensile Strength: Ultimate (UTS), MPa		370 to 520
Tensile Strength: Ultimate (UTS), MPa		320 to 560

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		230

Maximum Temperature: Mechanical, °C		120
Maximum Temperature: Mechanical, °C		240

Melting Completion (Liquidus), °C		900
Melting Completion (Liquidus), °C		1200

Melting Onset (Solidus), °C		890
Melting Onset (Solidus), °C		1150

Specific Heat Capacity, J/kg-K		380
Specific Heat Capacity, J/kg-K		400

Thermal Conductivity, W/m-K		120
Thermal Conductivity, W/m-K		43

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		27
Electrical Conductivity: Equal Volume, % IACS		6.5

Electrical Conductivity: Equal Weight (Specific), % IACS		30
Electrical Conductivity: Equal Weight (Specific), % IACS		6.6

Otherwise Unclassified Properties

Base Metal Price, % relative		23
Base Metal Price, % relative		37

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

Embodied Carbon, kg CO₂/kg material		2.7
Embodied Carbon, kg CO₂/kg material		4.3

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		63

Embodied Water, L/kg		320
Embodied Water, L/kg		290

Common Calculations

Stiffness to Weight: Axial, points		7.2
Stiffness to Weight: Axial, points		8.2

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

Strength to Weight: Axial, points		13 to 18
Strength to Weight: Axial, points		10 to 18

Strength to Weight: Bending, points		14 to 18
Strength to Weight: Bending, points		12 to 17

Thermal Diffusivity, mm²/s		39
Thermal Diffusivity, mm²/s		12

Thermal Shock Resistance, points		12 to 17
Thermal Shock Resistance, points		12 to 20

Alloy Composition

Copper (Cu), %		58 to 62
Copper (Cu), %		73.5 to 80.5

Iron (Fe), %		0 to 0.15
Iron (Fe), %		0.5 to 1.0

Lead (Pb), %		0.6 to 1.2
Lead (Pb), %		0 to 0.050

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

Nickel (Ni), %		0
Nickel (Ni), %		19 to 23

Zinc (Zn), %		36.3 to 41.4
Zinc (Zn), %		0 to 1.0

Residuals, %		0
Residuals, %		0 to 0.5