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4004 Aluminum vs. C27000 Brass

4004 aluminum belongs to the aluminum alloys classification, while C27000 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 4004 aluminum and the bottom bar is C27000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 110
370 to 650

Thermal Properties

Latent Heat of Fusion, J/g 540
180
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 600
930
Melting Onset (Solidus), °C 560
900
Specific Heat Capacity, J/kg-K 910
390
Thermal Conductivity, W/m-K 130
120
Thermal Expansion, µm/m-K 22
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
27
Electrical Conductivity: Equal Weight (Specific), % IACS 120
30

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.6
8.1
Embodied Carbon, kg CO2/kg material 8.0
2.7
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1070
320

Common Calculations

Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 54
19
Strength to Weight: Axial, points 12
13 to 22
Strength to Weight: Bending, points 20
14 to 21
Thermal Diffusivity, mm2/s 58
37
Thermal Shock Resistance, points 5.1
12 to 22

Alloy Composition

Aluminum (Al), % 86 to 90
0
Copper (Cu), % 0 to 0.25
63 to 68.5
Iron (Fe), % 0 to 0.8
0 to 0.1
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 9.0 to 10.5
0
Zinc (Zn), % 0 to 0.2
31 to 37
Residuals, % 0
0 to 0.3