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7020 Aluminum vs. C40500 Penny Bronze

7020 aluminum belongs to the aluminum alloys classification, while C40500 penny bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 C40500 penny bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 8.4 to 14
3.0 to 49
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
43
Shear Strength, MPa 110 to 230
210 to 310
Tensile Strength: Ultimate (UTS), MPa 190 to 390
270 to 540
Tensile Strength: Yield (Proof), MPa 120 to 310
79 to 520

Thermal Properties

Latent Heat of Fusion, J/g 380
200
Maximum Temperature: Mechanical, °C 210
190
Melting Completion (Liquidus), °C 650
1060
Melting Onset (Solidus), °C 610
1020
Specific Heat Capacity, J/kg-K 880
380
Thermal Conductivity, W/m-K 150
160
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
41
Electrical Conductivity: Equal Weight (Specific), % IACS 120
42

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
30
Density, g/cm3 2.9
8.8
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
43
Embodied Water, L/kg 1150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
16 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
28 to 1200
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 18 to 37
8.5 to 17
Strength to Weight: Bending, points 25 to 41
10 to 17
Thermal Diffusivity, mm2/s 59
48
Thermal Shock Resistance, points 8.3 to 17
9.5 to 19

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
94 to 96
Iron (Fe), % 0 to 0.4
0 to 0.050
Lead (Pb), % 0
0 to 0.050
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
0.7 to 1.3
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
2.1 to 5.3
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.5