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2024 Aluminum vs. C68000 Brass

2024 aluminum belongs to the aluminum alloys classification, while C68000 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 C68000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
100
Elongation at Break, % 4.0 to 16
27
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 200 to 540
390
Tensile Strength: Yield (Proof), MPa 100 to 490
140

Thermal Properties

Latent Heat of Fusion, J/g 390
170
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 640
880
Melting Onset (Solidus), °C 500
870
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 120
96
Thermal Expansion, µm/m-K 23
21

Otherwise Unclassified Properties

Base Metal Price, % relative 11
23
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1140
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 68
82
Resilience: Unit (Modulus of Resilience), kJ/m3 70 to 1680
95
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
31
Thermal Shock Resistance, points 8.6 to 24
13

Alloy Composition

Aluminum (Al), % 90.7 to 94.7
0 to 0.010
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
56 to 60
Iron (Fe), % 0 to 0.5
0.25 to 1.3
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0.010 to 0.5
Nickel (Ni), % 0
0.2 to 0.8
Silicon (Si), % 0 to 0.5
0.040 to 0.15
Tin (Sn), % 0
0.75 to 1.1
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
35.6 to 42.8
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0
0 to 0.5