When selecting 'Engineering Database/Materials/Solids/Pre-Defined' only some materials are available.
Solution
This is probably due to the license level, running only a standard FloEFD license.
From the FloEFD Windows program group entry select the 'Customize Feature' tool. Every additional feature adds material to the Database.
After additional features and a restart of FloEFD the materials are there.
So this is perfectly normal if using a standard FloEFD license (with no additional modules and corresponding added functionality).
Notes and References
Hardware/Software Configuration
Platform: INTEL
OS: window
OS Version: 1064
Product: SOLID_EDGE
Application: FLOEFD
Version: V219.0
Function: FLOEFD_SE
Ref: 001-8396055