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CR008A Copper vs. 7022 Aluminum

CR008A copper belongs to the copper alloys classification, while 7022 aluminum belongs to the aluminum alloys. There are 28 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 CR008A copper and the bottom bar is 7022 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 15
6.3 to 8.0
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
26
Tensile Strength: Ultimate (UTS), MPa 220
490 to 540
Tensile Strength: Yield (Proof), MPa 130
390 to 460

Thermal Properties

Latent Heat of Fusion, J/g 210
380
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1040
480
Specific Heat Capacity, J/kg-K 390
870
Thermal Conductivity, W/m-K 380
140
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
21
Electrical Conductivity: Equal Weight (Specific), % IACS 100
65

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 9.0
2.9
Embodied Carbon, kg CO2/kg material 2.6
8.5
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 320
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
29 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 76
1100 to 1500
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
47
Strength to Weight: Axial, points 6.8
47 to 51
Strength to Weight: Bending, points 9.0
47 to 50
Thermal Diffusivity, mm2/s 110
54
Thermal Shock Resistance, points 7.8
21 to 23

Alloy Composition


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Aluminum (Al), % 0
87.9 to 92.4
Bismuth (Bi), % 0 to 0.00050
0
Chromium (Cr), % 0
0.1 to 0.3
Copper (Cu), % 99.95 to 100
0.5 to 1.0
Iron (Fe), % 0
0 to 0.5
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0
2.6 to 3.7
Manganese (Mn), % 0
0.1 to 0.4
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
4.3 to 5.2
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15