C27400 Brass vs. C87300 Bronze

Both C27400 brass and C87300 bronze are copper alloys. They have 63% 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 C27400 brass and the bottom bar is C87300 bronze.

UNS C27400 (CW508L) Yellow Brass UNS C87300 Silicon Bronze

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		120

Poisson's Ratio		0.31
Poisson's Ratio		0.34

Shear Modulus, GPa		40
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		370 to 650
Tensile Strength: Ultimate (UTS), MPa		350

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		280

Maximum Temperature: Mechanical, °C		120
Maximum Temperature: Mechanical, °C		200

Melting Completion (Liquidus), °C		920
Melting Completion (Liquidus), °C		970

Melting Onset (Solidus), °C		870
Melting Onset (Solidus), °C		820

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		410

Thermal Conductivity, W/m-K		120
Thermal Conductivity, W/m-K		28

Thermal Expansion, µm/m-K		21
Thermal Expansion, µm/m-K		17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		28
Electrical Conductivity: Equal Volume, % IACS		6.1

Electrical Conductivity: Equal Weight (Specific), % IACS		31
Electrical Conductivity: Equal Weight (Specific), % IACS		6.4

Otherwise Unclassified Properties

Base Metal Price, % relative		23
Base Metal Price, % relative		29

Density, g/cm³		8.0
Density, g/cm³		8.6

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

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		42

Embodied Water, L/kg		320
Embodied Water, L/kg		300

Common Calculations

Stiffness to Weight: Axial, points		7.2
Stiffness to Weight: Axial, points		7.5

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

Strength to Weight: Axial, points		13 to 23
Strength to Weight: Axial, points		11

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

Thermal Diffusivity, mm²/s		37
Thermal Diffusivity, mm²/s		8.0

Thermal Shock Resistance, points		12 to 22
Thermal Shock Resistance, points		13

Alloy Composition

Copper (Cu), %		61 to 64
Copper (Cu), %		94 to 95.7

Iron (Fe), %		0 to 0.1
Iron (Fe), %		0 to 0.2

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0 to 0.2

Manganese (Mn), %		0
Manganese (Mn), %		0.8 to 1.5

Silicon (Si), %		0
Silicon (Si), %		3.5 to 5.0

Zinc (Zn), %		35.6 to 39
Zinc (Zn), %		0 to 0.25

Residuals, %		0
Residuals, %		0 to 0.5