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CR021A Copper vs. 7050 Aluminum

CR021A copper belongs to the copper alloys classification, while 7050 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 CR021A copper and the bottom bar is 7050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 15
2.2 to 12
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
26
Tensile Strength: Ultimate (UTS), MPa 230
490 to 570
Tensile Strength: Yield (Proof), MPa 140
390 to 500

Thermal Properties

Latent Heat of Fusion, J/g 210
370
Maximum Temperature: Mechanical, °C 200
190
Melting Completion (Liquidus), °C 1090
630
Melting Onset (Solidus), °C 1040
490
Specific Heat Capacity, J/kg-K 390
860
Thermal Conductivity, W/m-K 380
140
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
35
Electrical Conductivity: Equal Weight (Specific), % IACS 99
100

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 9.0
3.1
Embodied Carbon, kg CO2/kg material 2.6
8.2
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 320
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
10 to 55
Resilience: Unit (Modulus of Resilience), kJ/m3 83
1110 to 1760
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
45
Strength to Weight: Axial, points 7.1
45 to 51
Strength to Weight: Bending, points 9.3
45 to 50
Thermal Diffusivity, mm2/s 110
54
Thermal Shock Resistance, points 8.1
21 to 25

Alloy Composition

Aluminum (Al), % 0
87.3 to 92.1
Bismuth (Bi), % 0 to 0.00050
0
Chromium (Cr), % 0
0 to 0.040
Copper (Cu), % 99.95 to 99.998
2.0 to 2.6
Iron (Fe), % 0
0 to 0.15
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0
1.9 to 2.6
Manganese (Mn), % 0
0 to 0.1
Phosphorus (P), % 0.0020 to 0.0070
0
Silicon (Si), % 0
0 to 0.12
Silver (Ag), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.060
Zinc (Zn), % 0
5.7 to 6.7
Zirconium (Zr), % 0
0.080 to 0.15
Residuals, % 0
0 to 0.15