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7075 Aluminum vs. CC763S Brass

7075 aluminum belongs to the aluminum alloys classification, while CC763S brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 7075 aluminum and the bottom bar is CC763S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 1.8 to 12
7.3
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 26
41
Tensile Strength: Ultimate (UTS), MPa 240 to 590
490
Tensile Strength: Yield (Proof), MPa 120 to 510
270

Thermal Properties

Latent Heat of Fusion, J/g 380
190
Maximum Temperature: Mechanical, °C 200
140
Melting Completion (Liquidus), °C 640
870
Melting Onset (Solidus), °C 480
830
Specific Heat Capacity, J/kg-K 870
400
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
29
Electrical Conductivity: Equal Weight (Specific), % IACS 98
32

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.9
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1120
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
30
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
340
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 46
20
Strength to Weight: Axial, points 22 to 54
17
Strength to Weight: Bending, points 28 to 52
17
Thermal Shock Resistance, points 10 to 25
16

Alloy Composition


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Aluminum (Al), % 86.9 to 91.4
1.0 to 2.5
Antimony (Sb), % 0
0 to 0.080
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
56.5 to 67
Iron (Fe), % 0 to 0.5
0.5 to 2.0
Lead (Pb), % 0
0 to 1.5
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
1.0 to 3.5
Nickel (Ni), % 0
0 to 2.5
Silicon (Si), % 0 to 0.4
0 to 1.0
Tin (Sn), % 0
0 to 1.0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
18.9 to 41
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0