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7075 Aluminum vs. C95700 Bronze

7075 aluminum belongs to the aluminum alloys classification, while C95700 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 C95700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
130
Elongation at Break, % 1.8 to 12
23
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 26
47
Tensile Strength: Ultimate (UTS), MPa 240 to 590
680
Tensile Strength: Yield (Proof), MPa 120 to 510
310

Thermal Properties

Latent Heat of Fusion, J/g 380
230
Maximum Temperature: Mechanical, °C 200
220
Melting Completion (Liquidus), °C 640
990
Melting Onset (Solidus), °C 480
950
Specific Heat Capacity, J/kg-K 870
440
Thermal Conductivity, W/m-K 130
12
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 98
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
26
Density, g/cm3 3.0
8.2
Embodied Carbon, kg CO2/kg material 8.3
3.3
Embodied Energy, MJ/kg 150
54
Embodied Water, L/kg 1120
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
130
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
390
Stiffness to Weight: Axial, points 13
8.5
Stiffness to Weight: Bending, points 46
20
Strength to Weight: Axial, points 22 to 54
23
Strength to Weight: Bending, points 28 to 52
21
Thermal Diffusivity, mm2/s 50
3.3
Thermal Shock Resistance, points 10 to 25
21

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
7.0 to 8.5
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
71 to 78.5
Iron (Fe), % 0 to 0.5
2.0 to 4.0
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
11 to 14
Nickel (Ni), % 0
1.5 to 3.0
Silicon (Si), % 0 to 0.4
0 to 0.1
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.5