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2018 Aluminum vs. C96700 Copper

2018 aluminum belongs to the aluminum alloys classification, while C96700 copper belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 C96700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
140
Elongation at Break, % 9.6
10
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
53
Tensile Strength: Ultimate (UTS), MPa 420
1210
Tensile Strength: Yield (Proof), MPa 310
550

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 220
310
Melting Completion (Liquidus), °C 640
1170
Melting Onset (Solidus), °C 510
1110
Specific Heat Capacity, J/kg-K 870
400
Thermal Conductivity, W/m-K 150
30
Thermal Expansion, µm/m-K 22
15

Otherwise Unclassified Properties

Base Metal Price, % relative 11
90
Density, g/cm3 3.1
8.8
Embodied Carbon, kg CO2/kg material 8.1
9.5
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1130
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
99
Resilience: Unit (Modulus of Resilience), kJ/m3 670
1080
Stiffness to Weight: Axial, points 13
8.9
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 38
38
Strength to Weight: Bending, points 41
29
Thermal Diffusivity, mm2/s 57
8.5
Thermal Shock Resistance, points 19
40

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
0
Beryllium (Be), % 0
1.1 to 1.2
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
62.4 to 68.8
Iron (Fe), % 0 to 1.0
0.4 to 1.0
Lead (Pb), % 0
0 to 0.010
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
0.4 to 1.0
Nickel (Ni), % 1.7 to 2.3
29 to 33
Silicon (Si), % 0 to 0.9
0 to 0.15
Titanium (Ti), % 0
0.15 to 0.35
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0
0.15 to 0.35
Residuals, % 0
0 to 0.5