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2218 Aluminum vs. C14510 Copper

2218 aluminum belongs to the aluminum alloys classification, while C14510 copper belongs to the copper 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 2218 aluminum and the bottom bar is C14510 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
120
Elongation at Break, % 6.8 to 10
9.1 to 9.6
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
43
Shear Strength, MPa 210 to 250
180 to 190
Tensile Strength: Ultimate (UTS), MPa 330 to 430
300 to 320
Tensile Strength: Yield (Proof), MPa 260 to 310
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 390
210
Maximum Temperature: Mechanical, °C 220
200
Melting Completion (Liquidus), °C 640
1080
Melting Onset (Solidus), °C 510
1050
Specific Heat Capacity, J/kg-K 870
390
Thermal Conductivity, W/m-K 140
360
Thermal Expansion, µm/m-K 22
17

Otherwise Unclassified Properties

Base Metal Price, % relative 11
33
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
42
Embodied Water, L/kg 1130
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
25 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
230 to 280
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 30 to 39
9.2 to 10
Strength to Weight: Bending, points 34 to 41
11 to 12
Thermal Diffusivity, mm2/s 52
100
Thermal Shock Resistance, points 15 to 19
11 to 12

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
99.15 to 99.69
Iron (Fe), % 0 to 1.0
0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
0
Phosphorus (P), % 0
0.010 to 0.030
Silicon (Si), % 0 to 0.9
0
Tellurium (Te), % 0
0.3 to 0.7
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0