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7021 Aluminum vs. C19000 Copper

7021 aluminum belongs to the aluminum alloys classification, while C19000 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 7021 aluminum and the bottom bar is C19000 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 9.4
2.5 to 50
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 26
43
Shear Strength, MPa 270
170 to 390
Tensile Strength: Ultimate (UTS), MPa 460
260 to 760
Tensile Strength: Yield (Proof), MPa 390
140 to 630

Thermal Properties

Latent Heat of Fusion, J/g 380
210
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 630
1080
Melting Onset (Solidus), °C 510
1040
Specific Heat Capacity, J/kg-K 870
390
Thermal Conductivity, W/m-K 150
250
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
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
2.7
Embodied Energy, MJ/kg 150
42
Embodied Water, L/kg 1140
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
18 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
89 to 1730
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 44
8.2 to 24
Strength to Weight: Bending, points 45
10 to 21
Thermal Diffusivity, mm2/s 59
73
Thermal Shock Resistance, points 20
9.3 to 27

Alloy Composition

Aluminum (Al), % 90.7 to 93.7
0
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.25
96.9 to 99
Iron (Fe), % 0 to 0.4
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0.9 to 1.3
Phosphorus (P), % 0
0.15 to 0.35
Silicon (Si), % 0 to 0.25
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.0 to 6.0
0 to 0.8
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0
0 to 0.5