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C24000 Brass vs. C28500 Muntz Metal

Both C24000 brass and C28500 Muntz Metal are copper alloys. They have 78% 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 C28500 Muntz Metal.

UNS C24000 (CW503L) Low BrassUNS C28500 Muntz Metal
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Poisson's Ratio 0.32
0.3
Rockwell B Hardness 52 to 91
150
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 310 to 640
520

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Maximum Temperature: Mechanical, °C 160
110
Melting Completion (Liquidus), °C 1000
900
Melting Onset (Solidus), °C 970
890
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 140
100
Thermal Expansion, µm/m-K 19
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
29
Electrical Conductivity: Equal Weight (Specific), % IACS 34
33

Otherwise Unclassified Properties

Base Metal Price, % relative 27
22
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 43
46
Embodied Water, L/kg 320
320

Common Calculations

Stiffness to Weight: Axial, points 7.2
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 10 to 21
18
Strength to Weight: Bending, points 12 to 20
18
Thermal Diffusivity, mm2/s 43
33
Thermal Shock Resistance, points 10 to 22
17

Alloy Composition

Copper (Cu), % 78.5 to 81.5
57 to 59
Iron (Fe), % 0 to 0.050
0 to 0.35
Lead (Pb), % 0 to 0.050
0 to 0.25
Zinc (Zn), % 18.2 to 21.5
39.5 to 43
Residuals, % 0
0 to 0.9