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7020 Aluminum vs. C93700 Bronze

7020 aluminum belongs to the aluminum alloys classification, while C93700 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 C93700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
99
Elongation at Break, % 8.4 to 14
20
Fatigue Strength, MPa 110 to 130
90
Poisson's Ratio 0.33
0.35
Shear Modulus, GPa 26
37
Tensile Strength: Ultimate (UTS), MPa 190 to 390
240
Tensile Strength: Yield (Proof), MPa 120 to 310
130

Thermal Properties

Latent Heat of Fusion, J/g 380
170
Maximum Temperature: Mechanical, °C 210
140
Melting Completion (Liquidus), °C 650
930
Melting Onset (Solidus), °C 610
760
Specific Heat Capacity, J/kg-K 880
350
Thermal Conductivity, W/m-K 150
47
Thermal Expansion, µm/m-K 23
19

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
33
Density, g/cm3 2.9
8.9
Embodied Carbon, kg CO2/kg material 8.3
3.5
Embodied Energy, MJ/kg 150
57
Embodied Water, L/kg 1150
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
40
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
79
Stiffness to Weight: Axial, points 13
6.2
Stiffness to Weight: Bending, points 47
17
Strength to Weight: Axial, points 18 to 37
7.5
Strength to Weight: Bending, points 25 to 41
9.6
Thermal Diffusivity, mm2/s 59
15
Thermal Shock Resistance, points 8.3 to 17
9.4

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.5
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
78 to 82
Iron (Fe), % 0 to 0.4
0 to 0.15
Lead (Pb), % 0
8.0 to 11
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 1.5
Silicon (Si), % 0 to 0.35
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
9.0 to 11
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
0 to 0.8
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 1.0