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7020 Aluminum vs. CC498K Bronze

7020 aluminum belongs to the aluminum alloys classification, while CC498K 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 CC498K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 100
78
Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 8.4 to 14
14
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
41
Tensile Strength: Ultimate (UTS), MPa 190 to 390
260
Tensile Strength: Yield (Proof), MPa 120 to 310
130

Thermal Properties

Latent Heat of Fusion, J/g 380
190
Maximum Temperature: Mechanical, °C 210
170
Melting Completion (Liquidus), °C 650
1000
Melting Onset (Solidus), °C 610
920
Specific Heat Capacity, J/kg-K 880
370
Thermal Conductivity, W/m-K 150
73
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
10
Electrical Conductivity: Equal Weight (Specific), % IACS 120
10

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
32
Density, g/cm3 2.9
8.8
Embodied Carbon, kg CO2/kg material 8.3
3.2
Embodied Energy, MJ/kg 150
52
Embodied Water, L/kg 1150
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
30
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
72
Stiffness to Weight: Axial, points 13
6.9
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 18 to 37
8.1
Strength to Weight: Bending, points 25 to 41
10
Thermal Diffusivity, mm2/s 59
22
Thermal Shock Resistance, points 8.3 to 17
9.3

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0 to 0.010
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
85 to 90
Iron (Fe), % 0 to 0.4
0 to 0.25
Lead (Pb), % 0
1.0 to 2.0
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.35
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
5.5 to 6.5
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
3.0 to 5.0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0