C24000 Brass vs. C37000 Muntz Metal

Both C24000 brass and C37000 Muntz Metal are copper alloys. They have 81% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C24000 brass and the bottom bar is C37000 Muntz Metal.

UNS C24000 (CW503L) Low Brass UNS C37000 (CW607N) Free-Cutting Muntz Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.32
Poisson's Ratio		0.31

Rockwell B Hardness		52 to 91
Rockwell B Hardness		45

Shear Modulus, GPa		42
Shear Modulus, GPa		39

Tensile Strength: Ultimate (UTS), MPa		310 to 640
Tensile Strength: Ultimate (UTS), MPa		400

Thermal Properties

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

Maximum Temperature: Mechanical, °C		160
Maximum Temperature: Mechanical, °C		120

Melting Completion (Liquidus), °C		1000
Melting Completion (Liquidus), °C		900

Melting Onset (Solidus), °C		970
Melting Onset (Solidus), °C		890

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

Thermal Conductivity, W/m-K		140
Thermal Conductivity, W/m-K		120

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		32
Electrical Conductivity: Equal Volume, % IACS		27

Electrical Conductivity: Equal Weight (Specific), % IACS		34
Electrical Conductivity: Equal Weight (Specific), % IACS		30

Otherwise Unclassified Properties

Base Metal Price, % relative		27
Base Metal Price, % relative		23

Density, g/cm³		8.5
Density, g/cm³		8.1

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

Embodied Energy, MJ/kg		43
Embodied Energy, MJ/kg		45

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

Common Calculations

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

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

Strength to Weight: Axial, points		10 to 21
Strength to Weight: Axial, points		14

Strength to Weight: Bending, points		12 to 20
Strength to Weight: Bending, points		15

Thermal Diffusivity, mm²/s		43
Thermal Diffusivity, mm²/s		39

Thermal Shock Resistance, points		10 to 22
Thermal Shock Resistance, points		13

Alloy Composition

Copper (Cu), %		78.5 to 81.5
Copper (Cu), %		59 to 62

Iron (Fe), %		0 to 0.050
Iron (Fe), %		0 to 0.15

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0.8 to 1.5

Zinc (Zn), %		18.2 to 21.5
Zinc (Zn), %		36 to 40.2

Residuals, %		0
Residuals, %		0 to 0.4