C68300 Brass vs. C27400 Brass

Both C68300 brass and C27400 brass are copper alloys. They have a very high 98% 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 C68300 brass and the bottom bar is C27400 brass.

UNS C68300 Antimony-Silicon Brass UNS C27400 (CW508L) Yellow 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		0.31

Rockwell B Hardness		60
Rockwell B Hardness		53 to 91

Shear Modulus, GPa		40
Shear Modulus, GPa		40

Tensile Strength: Ultimate (UTS), MPa		430
Tensile Strength: Ultimate (UTS), MPa		370 to 650

Thermal Properties

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

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

Melting Completion (Liquidus), °C		900
Melting Completion (Liquidus), °C		920

Melting Onset (Solidus), °C		890
Melting Onset (Solidus), °C		870

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

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

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

Otherwise Unclassified Properties

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

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

Embodied Carbon, kg CO₂/kg material		2.8
Embodied Carbon, kg CO₂/kg material		2.7

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

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

Common Calculations

Stiffness to Weight: Axial, points		7.3
Stiffness to Weight: Axial, points		7.2

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

Strength to Weight: Axial, points		15
Strength to Weight: Axial, points		13 to 23

Strength to Weight: Bending, points		16
Strength to Weight: Bending, points		14 to 21

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

Thermal Shock Resistance, points		14
Thermal Shock Resistance, points		12 to 22

Alloy Composition

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

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

Copper (Cu), %		59 to 63
Copper (Cu), %		61 to 64

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

Lead (Pb), %		0 to 0.090
Lead (Pb), %		0 to 0.050

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

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

Zinc (Zn), %		34.2 to 40.4
Zinc (Zn), %		35.6 to 39

Residuals, %		0
Residuals, %		0 to 0.3