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7108 Aluminum vs. CC762S Brass

7108 aluminum belongs to the aluminum alloys classification, while CC762S brass belongs to the copper 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 7108 aluminum and the bottom bar is CC762S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 11
7.3
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
43
Tensile Strength: Ultimate (UTS), MPa 350
840
Tensile Strength: Yield (Proof), MPa 290
540

Thermal Properties

Latent Heat of Fusion, J/g 380
200
Maximum Temperature: Mechanical, °C 210
160
Melting Completion (Liquidus), °C 630
920
Melting Onset (Solidus), °C 530
870
Specific Heat Capacity, J/kg-K 880
420
Thermal Conductivity, W/m-K 150
51
Thermal Expansion, µm/m-K 24
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
28
Electrical Conductivity: Equal Weight (Specific), % IACS 120
32

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.9
8.0
Embodied Carbon, kg CO2/kg material 8.3
3.1
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1150
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38
54
Resilience: Unit (Modulus of Resilience), kJ/m3 620
1290
Stiffness to Weight: Axial, points 13
7.8
Stiffness to Weight: Bending, points 47
20
Strength to Weight: Axial, points 34
29
Strength to Weight: Bending, points 38
25
Thermal Diffusivity, mm2/s 59
15
Thermal Shock Resistance, points 16
27

Alloy Composition

Aluminum (Al), % 92.4 to 94.7
3.0 to 7.0
Antimony (Sb), % 0
0 to 0.030
Copper (Cu), % 0 to 0.050
57 to 67
Iron (Fe), % 0 to 0.1
1.5 to 4.0
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0.7 to 1.4
0
Manganese (Mn), % 0 to 0.050
2.5 to 5.0
Nickel (Ni), % 0
0 to 3.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 0.1
Tin (Sn), % 0
0 to 0.2
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 4.5 to 5.5
13.4 to 36
Zirconium (Zr), % 0.12 to 0.25
0
Residuals, % 0 to 0.15
0