C34000 Brass vs. C87400 Brass

Both C34000 brass and C87400 brass are copper alloys. They have 78% of their average alloy composition in common. There are 24 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 C34000 brass and the bottom bar is C87400 brass.

UNS C34000 (CW600N) Leaded Brass UNS C87400 Silicon Brass

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		110

Poisson's Ratio		0.31
Poisson's Ratio		0.33

Shear Modulus, GPa		40
Shear Modulus, GPa		41

Tensile Strength: Ultimate (UTS), MPa		340 to 650
Tensile Strength: Ultimate (UTS), MPa		390

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		250

Maximum Temperature: Mechanical, °C		120
Maximum Temperature: Mechanical, °C		170

Melting Completion (Liquidus), °C		930
Melting Completion (Liquidus), °C		920

Melting Onset (Solidus), °C		890
Melting Onset (Solidus), °C		820

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		28

Thermal Expansion, µm/m-K		21
Thermal Expansion, µm/m-K		18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		26
Electrical Conductivity: Equal Volume, % IACS		6.7

Electrical Conductivity: Equal Weight (Specific), % IACS		29
Electrical Conductivity: Equal Weight (Specific), % IACS		7.2

Otherwise Unclassified Properties

Base Metal Price, % relative		24
Base Metal Price, % relative		27

Density, g/cm³		8.1
Density, g/cm³		8.3

Embodied Carbon, kg CO₂/kg material		2.6
Embodied Carbon, kg CO₂/kg material		2.7

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		44

Embodied Water, L/kg		320
Embodied Water, L/kg		310

Common Calculations

Stiffness to Weight: Axial, points		7.1
Stiffness to Weight: Axial, points		7.4

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

Strength to Weight: Axial, points		11 to 22
Strength to Weight: Axial, points		13

Strength to Weight: Bending, points		13 to 21
Strength to Weight: Bending, points		14

Thermal Diffusivity, mm²/s		37
Thermal Diffusivity, mm²/s		8.3

Thermal Shock Resistance, points		11 to 22
Thermal Shock Resistance, points		14

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.8

Copper (Cu), %		62 to 65
Copper (Cu), %		79 to 85.5

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

Lead (Pb), %		0.8 to 1.5
Lead (Pb), %		0 to 1.0

Silicon (Si), %		0
Silicon (Si), %		2.5 to 4.0

Zinc (Zn), %		33 to 37.2
Zinc (Zn), %		12 to 16

Residuals, %		0
Residuals, %		0 to 0.8