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8079 Aluminum vs. C82700 Copper

8079 aluminum belongs to the aluminum alloys classification, while C82700 copper belongs to the copper alloys. There are 27 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 8079 aluminum and the bottom bar is C82700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 2.2
1.8
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
46
Tensile Strength: Ultimate (UTS), MPa 150
1200
Tensile Strength: Yield (Proof), MPa 120
1020

Thermal Properties

Latent Heat of Fusion, J/g 400
240
Maximum Temperature: Mechanical, °C 170
300
Melting Completion (Liquidus), °C 650
950
Melting Onset (Solidus), °C 640
860
Specific Heat Capacity, J/kg-K 900
380
Thermal Conductivity, W/m-K 230
130
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58
20
Electrical Conductivity: Equal Weight (Specific), % IACS 190
21

Otherwise Unclassified Properties

Density, g/cm3 2.8
8.7
Embodied Carbon, kg CO2/kg material 8.2
12
Embodied Energy, MJ/kg 150
180
Embodied Water, L/kg 1180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1
21
Resilience: Unit (Modulus of Resilience), kJ/m3 110
4260
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 15
38
Strength to Weight: Bending, points 22
29
Thermal Diffusivity, mm2/s 92
39
Thermal Shock Resistance, points 6.4
41

Alloy Composition

Aluminum (Al), % 98.1 to 99.3
0 to 0.15
Beryllium (Be), % 0
2.4 to 2.6
Chromium (Cr), % 0
0 to 0.090
Copper (Cu), % 0 to 0.050
94.6 to 96.7
Iron (Fe), % 0.7 to 1.3
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Nickel (Ni), % 0
1.0 to 1.5
Silicon (Si), % 0.050 to 0.3
0 to 0.15
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.1
0 to 0.1
Residuals, % 0
0 to 0.5