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7020 Aluminum vs. C16500 Copper

7020 aluminum belongs to the aluminum alloys classification, while C16500 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 7020 aluminum and the bottom bar is C16500 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 8.4 to 14
1.5 to 53
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
43
Shear Strength, MPa 110 to 230
200 to 310
Tensile Strength: Ultimate (UTS), MPa 190 to 390
280 to 530
Tensile Strength: Yield (Proof), MPa 120 to 310
97 to 520

Thermal Properties

Latent Heat of Fusion, J/g 380
210
Maximum Temperature: Mechanical, °C 210
340
Melting Completion (Liquidus), °C 650
1070
Melting Onset (Solidus), °C 610
1010
Specific Heat Capacity, J/kg-K 880
380
Thermal Conductivity, W/m-K 150
250
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
60
Electrical Conductivity: Equal Weight (Specific), % IACS 120
61

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
31
Density, g/cm3 2.9
8.9
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 150
42
Embodied Water, L/kg 1150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
7.8 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
41 to 1160
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 18 to 37
8.6 to 17
Strength to Weight: Bending, points 25 to 41
11 to 16
Thermal Diffusivity, mm2/s 59
74
Thermal Shock Resistance, points 8.3 to 17
9.8 to 19

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Cadmium (Cd), % 0
0.6 to 1.0
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
97.8 to 98.9
Iron (Fe), % 0 to 0.4
0 to 0.020
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Silicon (Si), % 0 to 0.35
0
Tin (Sn), % 0
0.5 to 0.7
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.5