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CR021A Copper vs. 8079 Aluminum

CR021A copper belongs to the copper alloys classification, while 8079 aluminum belongs to the aluminum alloys. There are 28 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 CR021A copper and the bottom bar is 8079 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
69
Elongation at Break, % 15
2.2
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
26
Tensile Strength: Ultimate (UTS), MPa 230
150
Tensile Strength: Yield (Proof), MPa 140
120

Thermal Properties

Latent Heat of Fusion, J/g 210
400
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 1090
650
Melting Onset (Solidus), °C 1040
640
Specific Heat Capacity, J/kg-K 390
900
Thermal Conductivity, W/m-K 380
230
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
58
Electrical Conductivity: Equal Weight (Specific), % IACS 99
190

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.0
Density, g/cm3 9.0
2.8
Embodied Carbon, kg CO2/kg material 2.6
8.2
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 320
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
3.1
Resilience: Unit (Modulus of Resilience), kJ/m3 83
110
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
50
Strength to Weight: Axial, points 7.1
15
Strength to Weight: Bending, points 9.3
22
Thermal Diffusivity, mm2/s 110
92
Thermal Shock Resistance, points 8.1
6.4

Alloy Composition

Aluminum (Al), % 0
98.1 to 99.3
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.95 to 99.998
0 to 0.050
Iron (Fe), % 0
0.7 to 1.3
Lead (Pb), % 0 to 0.0050
0
Phosphorus (P), % 0.0020 to 0.0070
0
Silicon (Si), % 0
0.050 to 0.3
Silver (Ag), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15