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C82400 Copper vs. 7020 Aluminum

C82400 copper belongs to the copper alloys classification, while 7020 aluminum belongs to the aluminum alloys. There are 27 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 C82400 copper and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 1.0 to 20
8.4 to 14
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 45
26
Tensile Strength: Ultimate (UTS), MPa 500 to 1030
190 to 390
Tensile Strength: Yield (Proof), MPa 260 to 970
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 230
380
Maximum Temperature: Mechanical, °C 270
210
Melting Completion (Liquidus), °C 1000
650
Melting Onset (Solidus), °C 900
610
Specific Heat Capacity, J/kg-K 380
880
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
39
Electrical Conductivity: Equal Weight (Specific), % IACS 26
120

Otherwise Unclassified Properties

Density, g/cm3 8.8
2.9
Embodied Carbon, kg CO2/kg material 8.9
8.3
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 310
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 83
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 3870
110 to 690
Stiffness to Weight: Axial, points 7.6
13
Stiffness to Weight: Bending, points 19
47
Strength to Weight: Axial, points 16 to 33
18 to 37
Strength to Weight: Bending, points 16 to 26
25 to 41
Thermal Diffusivity, mm2/s 39
59
Thermal Shock Resistance, points 17 to 36
8.3 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.15
91.2 to 94.8
Beryllium (Be), % 1.6 to 1.9
0
Chromium (Cr), % 0 to 0.1
0.1 to 0.35
Cobalt (Co), % 0.2 to 0.65
0
Copper (Cu), % 96 to 98.2
0 to 0.2
Iron (Fe), % 0 to 0.2
0 to 0.4
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0
1.0 to 1.4
Manganese (Mn), % 0
0.050 to 0.5
Nickel (Ni), % 0 to 0.2
0
Silicon (Si), % 0
0 to 0.35
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.12
0 to 0.25
Zinc (Zn), % 0 to 0.1
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0
0 to 0.15