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Charts: Thermal Conductivity I Manufacturing advantages and
improved recyclability are clearly benefits of using all-
aluminium for heat exchangers, but what about material
properties and the choice of alloys, and the competition with
copper alloys? Good thermal conductivity is the first
consideration, so we will use charts displaying this property.
Strength, density and price are all important, so we compare
alloys on charts showing these properties. Heat exchanger design
must also take account of less easily quantified material
characteristics - in particular the corrosion response.
Aluminium alloys vs. copper alloys The material property chart
below shows thermal conductivity vs. yield stress, with a number
of common heat exchanger alloys included. Al heat exchanger
alloys 1000 series alloys (e.g. 1050 and 1197) have the highest
therm