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C23400 Brass vs. 2024 Aluminum

C23400 brass belongs to the copper alloys classification, while 2024 aluminum belongs to the aluminum alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is C23400 brass and the bottom bar is 2024 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 42
27
Tensile Strength: Ultimate (UTS), MPa 370 to 640
200 to 540

Thermal Properties

Latent Heat of Fusion, J/g 190
390
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 970
640
Melting Onset (Solidus), °C 930
500
Specific Heat Capacity, J/kg-K 390
880
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 19
23

Otherwise Unclassified Properties

Base Metal Price, % relative 27
11
Density, g/cm3 8.5
3.0
Embodied Carbon, kg CO2/kg material 2.6
8.3
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 320
1140

Common Calculations

Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 19
46
Strength to Weight: Axial, points 12 to 21
18 to 50
Strength to Weight: Bending, points 13 to 19
25 to 49
Thermal Diffusivity, mm2/s 36
46
Thermal Shock Resistance, points 12 to 22
8.6 to 24

Alloy Composition

Aluminum (Al), % 0
90.7 to 94.7
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 81 to 84
3.8 to 4.9
Iron (Fe), % 0 to 0.050
0 to 0.5
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0
0.3 to 0.9
Silicon (Si), % 0
0 to 0.5
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 15.7 to 19
0 to 0.25
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15