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CC491K Bronze vs. 7020 Aluminum

CC491K bronze belongs to the copper alloys classification, while 7020 aluminum belongs to the aluminum 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 CC491K bronze and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
45 to 100
Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 13
8.4 to 14
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 40
26
Tensile Strength: Ultimate (UTS), MPa 260
190 to 390
Tensile Strength: Yield (Proof), MPa 120
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 190
380
Maximum Temperature: Mechanical, °C 160
210
Melting Completion (Liquidus), °C 980
650
Melting Onset (Solidus), °C 900
610
Specific Heat Capacity, J/kg-K 370
880
Thermal Conductivity, W/m-K 71
150
Thermal Expansion, µm/m-K 19
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
39
Electrical Conductivity: Equal Weight (Specific), % IACS 15
120

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.9
2.9
Embodied Carbon, kg CO2/kg material 3.1
8.3
Embodied Energy, MJ/kg 51
150
Embodied Water, L/kg 350
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 67
110 to 690
Stiffness to Weight: Axial, points 6.7
13
Stiffness to Weight: Bending, points 18
47
Strength to Weight: Axial, points 8.1
18 to 37
Strength to Weight: Bending, points 10
25 to 41
Thermal Diffusivity, mm2/s 22
59
Thermal Shock Resistance, points 9.3
8.3 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.010
91.2 to 94.8
Antimony (Sb), % 0 to 0.25
0
Chromium (Cr), % 0
0.1 to 0.35
Copper (Cu), % 81 to 87
0 to 0.2
Iron (Fe), % 0 to 0.3
0 to 0.4
Lead (Pb), % 4.0 to 6.0
0
Magnesium (Mg), % 0
1.0 to 1.4
Manganese (Mn), % 0
0.050 to 0.5
Nickel (Ni), % 0 to 2.0
0
Phosphorus (P), % 0 to 0.1
0
Silicon (Si), % 0 to 0.010
0 to 0.35
Sulfur (S), % 0 to 0.1
0
Tin (Sn), % 4.0 to 6.0
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 4.0 to 6.0
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0
0 to 0.15