C37700 Brass vs. C52400 Bronze

Both C37700 brass and C52400 bronze are copper alloys. They have 60% 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 C37700 brass and the bottom bar is C52400 bronze.

UNS C37700 (CW612N) Forging Brass UNS C52400 Phosphor Bronze

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		0.34

Rockwell B Hardness		45
Rockwell B Hardness		50 to 100

Shear Modulus, GPa		39
Shear Modulus, GPa		41

Tensile Strength: Ultimate (UTS), MPa		400
Tensile Strength: Ultimate (UTS), MPa		450 to 880

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		190

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

Melting Completion (Liquidus), °C		890
Melting Completion (Liquidus), °C		1000

Melting Onset (Solidus), °C		880
Melting Onset (Solidus), °C		840

Specific Heat Capacity, J/kg-K		380
Specific Heat Capacity, J/kg-K		370

Thermal Conductivity, W/m-K		120
Thermal Conductivity, W/m-K		50

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		27
Electrical Conductivity: Equal Volume, % IACS		11

Electrical Conductivity: Equal Weight (Specific), % IACS		30
Electrical Conductivity: Equal Weight (Specific), % IACS		11

Otherwise Unclassified Properties

Base Metal Price, % relative		23
Base Metal Price, % relative		35

Density, g/cm³		8.1
Density, g/cm³		8.8

Embodied Carbon, kg CO₂/kg material		2.6
Embodied Carbon, kg CO₂/kg material		3.6

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		58

Embodied Water, L/kg		320
Embodied Water, L/kg		390

Common Calculations

Stiffness to Weight: Axial, points		7.1
Stiffness to Weight: Axial, points		6.9

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		14
Strength to Weight: Axial, points		14 to 28

Strength to Weight: Bending, points		15
Strength to Weight: Bending, points		15 to 23

Thermal Diffusivity, mm²/s		39
Thermal Diffusivity, mm²/s		15

Thermal Shock Resistance, points		13
Thermal Shock Resistance, points		17 to 32

Alloy Composition

Copper (Cu), %		58 to 61
Copper (Cu), %		87.8 to 91

Iron (Fe), %		0 to 0.3
Iron (Fe), %		0 to 0.1

Lead (Pb), %		1.5 to 2.5
Lead (Pb), %		0 to 0.050

Phosphorus (P), %		0
Phosphorus (P), %		0.030 to 0.35

Tin (Sn), %		0
Tin (Sn), %		9.0 to 11

Zinc (Zn), %		35.7 to 40.5
Zinc (Zn), %		0 to 0.2

Residuals, %		0
Residuals, %		0 to 0.5