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C87900 Brass vs. 2124 Aluminum

C87900 brass belongs to the copper alloys classification, while 2124 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 C87900 brass and the bottom bar is 2124 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 25
5.7
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 41
27
Tensile Strength: Ultimate (UTS), MPa 480
490
Tensile Strength: Yield (Proof), MPa 240
430

Thermal Properties

Latent Heat of Fusion, J/g 190
390
Maximum Temperature: Mechanical, °C 130
190
Melting Completion (Liquidus), °C 930
640
Melting Onset (Solidus), °C 900
500
Specific Heat Capacity, J/kg-K 390
880
Thermal Conductivity, W/m-K 120
150
Thermal Expansion, µm/m-K 20
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
38
Electrical Conductivity: Equal Weight (Specific), % IACS 17
110

Otherwise Unclassified Properties

Base Metal Price, % relative 24
10
Density, g/cm3 8.1
3.0
Embodied Carbon, kg CO2/kg material 2.7
8.2
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 320
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
27
Resilience: Unit (Modulus of Resilience), kJ/m3 270
1290
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 20
46
Strength to Weight: Axial, points 17
45
Strength to Weight: Bending, points 17
46
Thermal Diffusivity, mm2/s 37
58
Thermal Shock Resistance, points 16
21

Alloy Composition


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Aluminum (Al), % 0 to 0.15
91.3 to 94.7
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 63 to 69.2
3.8 to 4.9
Iron (Fe), % 0 to 0.4
0 to 0.3
Lead (Pb), % 0 to 0.25
0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0 to 0.15
0.3 to 0.9
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0.8 to 1.2
0 to 0.2
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0 to 0.25
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 30 to 36
0 to 0.25
Residuals, % 0
0 to 0.15