For each of the following, indicate whether metal, ceramic, or polymer materials should be used (when ceramic or polymer is selected, also indicate if it should be an insert inside a metal structure).

a. A pipeline is to carry a corrosive salt solution in a process and is subjected to considerable vibration and flexing.

b. A reactor is to contain very aggressive reactants at high temperature.

c. A tank must hold an inert gas (argon) at high pressure.