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3303 Aluminum vs. C18700 Copper

3303 aluminum belongs to the aluminum alloys classification, while C18700 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 3303 aluminum and the bottom bar is C18700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 23
9.0 to 9.6
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
43
Shear Strength, MPa 69
170 to 190
Tensile Strength: Ultimate (UTS), MPa 110
290 to 330
Tensile Strength: Yield (Proof), MPa 39
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 400
210
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 650
1080
Melting Onset (Solidus), °C 620
950
Specific Heat Capacity, J/kg-K 900
380
Thermal Conductivity, W/m-K 170
380
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
98
Electrical Conductivity: Equal Weight (Specific), % IACS 140
99

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
30
Density, g/cm3 2.8
9.0
Embodied Carbon, kg CO2/kg material 8.1
2.6
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
24 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 11
240 to 280
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 49
18
Strength to Weight: Axial, points 11
9.0 to 10
Strength to Weight: Bending, points 18
11 to 12
Thermal Diffusivity, mm2/s 67
110
Thermal Shock Resistance, points 4.8
10 to 12

Alloy Composition

Aluminum (Al), % 96.6 to 99
0
Copper (Cu), % 0.050 to 0.2
98 to 99.2
Iron (Fe), % 0 to 0.7
0
Lead (Pb), % 0
0.8 to 1.5
Manganese (Mn), % 1.0 to 1.5
0
Silicon (Si), % 0 to 0.6
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0 to 0.5