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2018 Aluminum vs. CC491K Bronze

2018 aluminum belongs to the aluminum alloys classification, while CC491K 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 2018 aluminum and the bottom bar is CC491K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
73
Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 9.6
13
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 420
260
Tensile Strength: Yield (Proof), MPa 310
120

Thermal Properties

Latent Heat of Fusion, J/g 390
190
Maximum Temperature: Mechanical, °C 220
160
Melting Completion (Liquidus), °C 640
980
Melting Onset (Solidus), °C 510
900
Specific Heat Capacity, J/kg-K 870
370
Thermal Conductivity, W/m-K 150
71
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
15
Electrical Conductivity: Equal Weight (Specific), % IACS 120
15

Otherwise Unclassified Properties

Base Metal Price, % relative 11
31
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.1
3.1
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1130
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
27
Resilience: Unit (Modulus of Resilience), kJ/m3 670
67
Stiffness to Weight: Axial, points 13
6.7
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 38
8.1
Strength to Weight: Bending, points 41
10
Thermal Diffusivity, mm2/s 57
22
Thermal Shock Resistance, points 19
9.3

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
0 to 0.010
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
81 to 87
Iron (Fe), % 0 to 1.0
0 to 0.3
Lead (Pb), % 0
4.0 to 6.0
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.9
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0 to 0.25
4.0 to 6.0
Residuals, % 0 to 0.15
0