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7020 Aluminum vs. CC493K Bronze

7020 aluminum belongs to the aluminum alloys classification, while CC493K bronze 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 7020 aluminum and the bottom bar is CC493K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 100
74
Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 8.4 to 14
14
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 190 to 390
270
Tensile Strength: Yield (Proof), MPa 120 to 310
140

Thermal Properties

Latent Heat of Fusion, J/g 380
180
Maximum Temperature: Mechanical, °C 210
160
Melting Completion (Liquidus), °C 650
960
Melting Onset (Solidus), °C 610
880
Specific Heat Capacity, J/kg-K 880
360
Thermal Conductivity, W/m-K 150
61
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
12
Electrical Conductivity: Equal Weight (Specific), % IACS 120
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
32
Density, g/cm3 2.9
8.9
Embodied Carbon, kg CO2/kg material 8.3
3.3
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1150
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
33
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
89
Stiffness to Weight: Axial, points 13
6.5
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 18 to 37
8.6
Strength to Weight: Bending, points 25 to 41
11
Thermal Diffusivity, mm2/s 59
19
Thermal Shock Resistance, points 8.3 to 17
10

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0 to 0.010
Antimony (Sb), % 0
0 to 0.3
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
79 to 86
Iron (Fe), % 0 to 0.4
0 to 0.2
Lead (Pb), % 0
5.0 to 8.0
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.35
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
5.2 to 8.0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
2.0 to 5.0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0