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2018 Aluminum vs. C86700 Bronze

2018 aluminum belongs to the aluminum alloys classification, while C86700 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 C86700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 9.6
17
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 420
630
Tensile Strength: Yield (Proof), MPa 310
250

Thermal Properties

Latent Heat of Fusion, J/g 390
180
Maximum Temperature: Mechanical, °C 220
130
Melting Completion (Liquidus), °C 640
880
Melting Onset (Solidus), °C 510
860
Specific Heat Capacity, J/kg-K 870
400
Thermal Conductivity, W/m-K 150
89
Thermal Expansion, µm/m-K 22
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
17
Electrical Conductivity: Equal Weight (Specific), % IACS 120
19

Otherwise Unclassified Properties

Base Metal Price, % relative 11
23
Density, g/cm3 3.1
7.9
Embodied Carbon, kg CO2/kg material 8.1
2.9
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1130
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
86
Resilience: Unit (Modulus of Resilience), kJ/m3 670
290
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 38
22
Strength to Weight: Bending, points 41
21
Thermal Diffusivity, mm2/s 57
28
Thermal Shock Resistance, points 19
21

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
1.0 to 3.0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
55 to 60
Iron (Fe), % 0 to 1.0
1.0 to 3.0
Lead (Pb), % 0
0.5 to 1.5
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
1.0 to 3.5
Nickel (Ni), % 1.7 to 2.3
0 to 1.0
Silicon (Si), % 0 to 0.9
0
Tin (Sn), % 0
0 to 1.5
Zinc (Zn), % 0 to 0.25
30 to 38
Residuals, % 0
0 to 1.0