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2218 Aluminum vs. C99300 Copper

2218 aluminum belongs to the aluminum alloys classification, while C99300 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C99300 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95 to 110
200
Elastic (Young's, Tensile) Modulus, GPa 73
120
Elongation at Break, % 6.8 to 10
2.0
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
46
Tensile Strength: Ultimate (UTS), MPa 330 to 430
660
Tensile Strength: Yield (Proof), MPa 260 to 310
380

Thermal Properties

Latent Heat of Fusion, J/g 390
240
Maximum Temperature: Mechanical, °C 220
250
Melting Completion (Liquidus), °C 640
1080
Melting Onset (Solidus), °C 510
1070
Specific Heat Capacity, J/kg-K 870
450
Thermal Conductivity, W/m-K 140
43
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
35
Density, g/cm3 3.1
8.2
Embodied Carbon, kg CO2/kg material 8.2
4.5
Embodied Energy, MJ/kg 150
70
Embodied Water, L/kg 1130
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
11
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
590
Stiffness to Weight: Axial, points 13
8.3
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 30 to 39
22
Strength to Weight: Bending, points 34 to 41
20
Thermal Diffusivity, mm2/s 52
12
Thermal Shock Resistance, points 15 to 19
22

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
10.7 to 11.5
Chromium (Cr), % 0 to 0.1
0
Cobalt (Co), % 0
1.0 to 2.0
Copper (Cu), % 3.5 to 4.5
68.6 to 74.4
Iron (Fe), % 0 to 1.0
0.4 to 1.0
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
13.5 to 16.5
Silicon (Si), % 0 to 0.9
0 to 0.020
Tin (Sn), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.3