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2024 Aluminum vs. C85500 Brass

2024 aluminum belongs to the aluminum alloys classification, while C85500 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 2024 aluminum and the bottom bar is C85500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
100
Elongation at Break, % 4.0 to 16
40
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 200 to 540
410
Tensile Strength: Yield (Proof), MPa 100 to 490
160

Thermal Properties

Latent Heat of Fusion, J/g 390
170
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 640
900
Melting Onset (Solidus), °C 500
890
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
26
Electrical Conductivity: Equal Weight (Specific), % IACS 90
29

Otherwise Unclassified Properties

Base Metal Price, % relative 11
23
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1140
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 68
130
Resilience: Unit (Modulus of Resilience), kJ/m3 70 to 1680
120
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 46
20
Strength to Weight: Axial, points 18 to 50
14
Strength to Weight: Bending, points 25 to 49
15
Thermal Diffusivity, mm2/s 46
38
Thermal Shock Resistance, points 8.6 to 24
14

Alloy Composition

Aluminum (Al), % 90.7 to 94.7
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
59 to 63
Iron (Fe), % 0 to 0.5
0 to 0.2
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0 to 0.2
Nickel (Ni), % 0
0 to 0.2
Silicon (Si), % 0 to 0.5
0
Tin (Sn), % 0
0 to 0.2
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
35.1 to 41
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0
0 to 0.9