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2018 Aluminum vs. C82200 Copper

2018 aluminum belongs to the aluminum alloys classification, while C82200 copper 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 2018 aluminum and the bottom bar is C82200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
120
Elongation at Break, % 9.6
8.0 to 20
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
44
Tensile Strength: Ultimate (UTS), MPa 420
390 to 660
Tensile Strength: Yield (Proof), MPa 310
210 to 520

Thermal Properties

Latent Heat of Fusion, J/g 390
220
Maximum Temperature: Mechanical, °C 220
230
Melting Completion (Liquidus), °C 640
1080
Melting Onset (Solidus), °C 510
1040
Specific Heat Capacity, J/kg-K 870
390
Thermal Conductivity, W/m-K 150
180
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
45
Electrical Conductivity: Equal Weight (Specific), % IACS 120
46

Otherwise Unclassified Properties

Base Metal Price, % relative 11
55
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.1
4.8
Embodied Energy, MJ/kg 150
74
Embodied Water, L/kg 1130
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
49 to 66
Resilience: Unit (Modulus of Resilience), kJ/m3 670
180 to 1130
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 38
12 to 20
Strength to Weight: Bending, points 41
13 to 19
Thermal Diffusivity, mm2/s 57
53
Thermal Shock Resistance, points 19
14 to 23

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
0
Beryllium (Be), % 0
0.35 to 0.8
Chromium (Cr), % 0 to 0.1
0
Cobalt (Co), % 0
0 to 0.3
Copper (Cu), % 3.5 to 4.5
97.4 to 98.7
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
1.0 to 2.0
Silicon (Si), % 0 to 0.9
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.5