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3102 Aluminum vs. C87400 Brass

3102 aluminum belongs to the aluminum alloys classification, while C87400 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (2, 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 3102 aluminum and the bottom bar is C87400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 23 to 28
21
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
41
Tensile Strength: Ultimate (UTS), MPa 92 to 100
390
Tensile Strength: Yield (Proof), MPa 28 to 34
160

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 640
920
Melting Onset (Solidus), °C 640
820
Specific Heat Capacity, J/kg-K 900
400
Thermal Conductivity, W/m-K 230
28
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 190
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
27
Density, g/cm3 2.7
8.3
Embodied Carbon, kg CO2/kg material 8.2
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1190
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 22
65
Resilience: Unit (Modulus of Resilience), kJ/m3 5.8 to 8.3
120
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 9.4 to 10
13
Strength to Weight: Bending, points 17 to 18
14
Thermal Diffusivity, mm2/s 92
8.3
Thermal Shock Resistance, points 4.1 to 4.4
14

Alloy Composition

Aluminum (Al), % 97.9 to 99.95
0 to 0.8
Copper (Cu), % 0 to 0.1
79 to 85.5
Iron (Fe), % 0 to 0.7
0
Lead (Pb), % 0
0 to 1.0
Manganese (Mn), % 0.050 to 0.4
0
Silicon (Si), % 0 to 0.4
2.5 to 4.0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.3
12 to 16
Residuals, % 0
0 to 0.8