material comparison

[no1]

Previously, we have manufactured containers for thermal chambers which are used to hold products to be cycled from hot to cold. Recently we have been asked to explore reducing the amount of material (aluminum) to eliminate the effects of "tools" in the chamber from contributing to the time required to cycle from hot to cold and visa versa.

One consideration is to try using another material instead of reducing the mass of the current product. The material would be a composite (Graphite and Epoxy).

My question is two part 1) How does this composite stack up to 6061-T6 aluminum Thermally and 2) How does it compare structurally?

Thank You for your input!

 

[CoryPad]

Since you are asking general questions, here are general answers. Thermally, the composite will be an insulator while the aluminium is a conductor. If the temperature cycle is long enough, you would be most concerned with the enthalpy content, which depends upon heat capacity and mass. Structurally, the composite will have greater strength to weight ratio and stiffness to weight ratio (in the reinforcement direction for both), but is anisotropic. For a specific component, the composite should be less massive. So, the composite will require longer time for temperature equilibration, but should require less heat input to reach a certain temperature.

 

[no1]

Thank you for your response on the composite vs aluminum questions.

Your input has helped to confirm initial perceptions, and points to additional aspects for consideration.