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7075 Aluminum vs. C86400 Bronze

7075 aluminum belongs to the aluminum alloys classification, while C86400 bronze 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 7075 aluminum and the bottom bar is C86400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 1.8 to 12
17
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 240 to 590
470
Tensile Strength: Yield (Proof), MPa 120 to 510
150

Thermal Properties

Latent Heat of Fusion, J/g 380
170
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 640
880
Melting Onset (Solidus), °C 480
860
Specific Heat Capacity, J/kg-K 870
390
Thermal Conductivity, W/m-K 130
88
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
19
Electrical Conductivity: Equal Weight (Specific), % IACS 98
22

Otherwise Unclassified Properties

Base Metal Price, % relative 10
23
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1120
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
63
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
110
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 46
20
Strength to Weight: Axial, points 22 to 54
16
Strength to Weight: Bending, points 28 to 52
17
Thermal Diffusivity, mm2/s 50
29
Thermal Shock Resistance, points 10 to 25
16

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
0.5 to 1.5
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
56 to 62
Iron (Fe), % 0 to 0.5
0.4 to 2.0
Lead (Pb), % 0
0.5 to 1.5
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
0.1 to 1.0
Nickel (Ni), % 0
0 to 1.0
Silicon (Si), % 0 to 0.4
0
Tin (Sn), % 0
0.5 to 1.5
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
34 to 42
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 1.0