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8090 Aluminum vs. C18900 Copper

8090 aluminum belongs to the aluminum alloys classification, while C18900 copper 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 8090 aluminum and the bottom bar is C18900 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
120
Elongation at Break, % 3.5 to 13
14 to 48
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 25
43
Tensile Strength: Ultimate (UTS), MPa 340 to 490
260 to 500
Tensile Strength: Yield (Proof), MPa 210 to 420
67 to 390

Thermal Properties

Latent Heat of Fusion, J/g 400
210
Maximum Temperature: Mechanical, °C 190
200
Melting Completion (Liquidus), °C 660
1080
Melting Onset (Solidus), °C 600
1020
Specific Heat Capacity, J/kg-K 960
390
Thermal Conductivity, W/m-K 95 to 160
130
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
30
Electrical Conductivity: Equal Weight (Specific), % IACS 66
30

Otherwise Unclassified Properties

Base Metal Price, % relative 18
31
Density, g/cm3 2.7
8.9
Embodied Carbon, kg CO2/kg material 8.6
2.7
Embodied Energy, MJ/kg 170
42
Embodied Water, L/kg 1160
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
65 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
20 to 660
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 34 to 49
8.2 to 16
Strength to Weight: Bending, points 39 to 50
10 to 16
Thermal Diffusivity, mm2/s 36 to 60
38
Thermal Shock Resistance, points 15 to 22
9.3 to 18

Alloy Composition

Aluminum (Al), % 93 to 98.4
0 to 0.010
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 1.0 to 1.6
97.7 to 99.15
Iron (Fe), % 0 to 0.3
0
Lead (Pb), % 0
0 to 0.020
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0
Manganese (Mn), % 0 to 0.1
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.2
0.15 to 0.4
Tin (Sn), % 0
0.6 to 0.9
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0 to 0.1
Zirconium (Zr), % 0.040 to 0.16
0
Residuals, % 0
0 to 0.5