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7075 Aluminum vs. CC493K Bronze

7075 aluminum belongs to the aluminum alloys classification, while CC493K bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 CC493K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 1.8 to 12
14
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 240 to 590
270
Tensile Strength: Yield (Proof), MPa 120 to 510
140

Thermal Properties

Latent Heat of Fusion, J/g 380
180
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 640
960
Melting Onset (Solidus), °C 480
880
Specific Heat Capacity, J/kg-K 870
360
Thermal Conductivity, W/m-K 130
61
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
12
Electrical Conductivity: Equal Weight (Specific), % IACS 98
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
32
Density, g/cm3 3.0
8.9
Embodied Carbon, kg CO2/kg material 8.3
3.3
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1120
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
33
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
89
Stiffness to Weight: Axial, points 13
6.5
Stiffness to Weight: Bending, points 46
18
Strength to Weight: Axial, points 22 to 54
8.6
Strength to Weight: Bending, points 28 to 52
11
Thermal Diffusivity, mm2/s 50
19
Thermal Shock Resistance, points 10 to 25
10

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
0 to 0.010
Antimony (Sb), % 0
0 to 0.3
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
79 to 86
Iron (Fe), % 0 to 0.5
0 to 0.2
Lead (Pb), % 0
5.0 to 8.0
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
0
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.4
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
5.2 to 8.0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
2.0 to 5.0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0