C34000 Brass vs. C68300 Brass

Both C34000 brass and C68300 brass are copper alloys. They have a very high 96% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C34000 brass and the bottom bar is C68300 brass.

UNS C34000 (CW600N) Leaded Brass UNS C68300 Antimony-Silicon Brass

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.31
Poisson's Ratio		0.31

Rockwell B Hardness		53 to 91
Rockwell B Hardness		60

Shear Modulus, GPa		40
Shear Modulus, GPa		40

Tensile Strength: Ultimate (UTS), MPa		340 to 650
Tensile Strength: Ultimate (UTS), MPa		430

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		180

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

Melting Completion (Liquidus), °C		930
Melting Completion (Liquidus), °C		900

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

Specific Heat Capacity, J/kg-K		380
Specific Heat Capacity, J/kg-K		390

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

Thermal Expansion, µm/m-K		21
Thermal Expansion, µm/m-K		20

Otherwise Unclassified Properties

Base Metal Price, % relative		24
Base Metal Price, % relative		23

Density, g/cm³		8.1
Density, g/cm³		8.0

Embodied Carbon, kg CO₂/kg material		2.6
Embodied Carbon, kg CO₂/kg material		2.8

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		46

Embodied Water, L/kg		320
Embodied Water, L/kg		340

Common Calculations

Stiffness to Weight: Axial, points		7.1
Stiffness to Weight: Axial, points		7.3

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

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

Thermal Diffusivity, mm²/s		37
Thermal Diffusivity, mm²/s		38

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

Alloy Composition

Antimony (Sb), %		0
Antimony (Sb), %		0.3 to 1.0

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.010

Copper (Cu), %		62 to 65
Copper (Cu), %		59 to 63

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

Lead (Pb), %		0.8 to 1.5
Lead (Pb), %		0 to 0.090

Silicon (Si), %		0
Silicon (Si), %		0.3 to 1.0

Tin (Sn), %		0
Tin (Sn), %		0.050 to 0.2

Zinc (Zn), %		33 to 37.2
Zinc (Zn), %		34.2 to 40.4

Residuals, %		0
Residuals, %		0 to 0.5