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7108 Aluminum vs. C34000 Brass

7108 aluminum belongs to the aluminum alloys classification, while C34000 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 7108 aluminum and the bottom bar is C34000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
100
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 350
340 to 650

Thermal Properties

Latent Heat of Fusion, J/g 380
170
Maximum Temperature: Mechanical, °C 210
120
Melting Completion (Liquidus), °C 630
930
Melting Onset (Solidus), °C 530
890
Specific Heat Capacity, J/kg-K 880
380
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
26
Electrical Conductivity: Equal Weight (Specific), % IACS 120
29

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.9
8.1
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1150
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 34
11 to 22
Strength to Weight: Bending, points 38
13 to 21
Thermal Diffusivity, mm2/s 59
37
Thermal Shock Resistance, points 16
11 to 22

Alloy Composition

Aluminum (Al), % 92.4 to 94.7
0
Copper (Cu), % 0 to 0.050
62 to 65
Iron (Fe), % 0 to 0.1
0 to 0.1
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 0.7 to 1.4
0
Manganese (Mn), % 0 to 0.050
0
Silicon (Si), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 4.5 to 5.5
33 to 37.2
Zirconium (Zr), % 0.12 to 0.25
0
Residuals, % 0
0 to 0.4