Thank you for your help. That does help me understand why certain plastic deformations have been seen on one of our aluminum molds. I really do appreciate your response. I found out from our coater that a (temps refering to metal temps.) a 750F heat treatment is held for 1 hour followed by a 25 minute cure time at 650F.
Clearly grain growth and recrystallization has began but not to a full anneal. Thank you for suggesting an alternative coating. I can keep that in mind for a possible criterion for a new coating system.